Article beginning on page 298.
Psyche 6:298-299, 1891.

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298 PSYCHE. f ~ugust 1892.
October 12th, 1825.
I thank you much for the specimens
of ins. you were so good as to send me,
as well as for the agreeable letter which accompanied them ; in the care of Mr.
Robinson they all arrived in excellent
order.
The Pollyxenus you met w. is ["per-
haps" erased] the P. fasciculatus Nob.
if so the species has a wide range.
Pieris, I have not met w. this sp.
before & do not know it, have you both
sexes ?
Limenitis arthemis, Drury, the But-
terfly w. a broad white band across ea.
wing.
Lycaena phlceas, vai-.
Cicindela formosa. I am surprised
to learn that this is f'd in y'r region ; I've never met w. it here. I think you
will find the green Cicindela to be a
variety of C. 6-guttata, I have some
specimens on which the punctures are
very large so as to give the surface a
very rough appearance.
The Craspedosoma must be interest-
ing, I have not yet found a sp'n in this country.
The black Leptura is my L. $ubera.
"The Tipula found in ditches &c"
is Ptychoptera clavipes of authors.
The brown butterfly is my Hip-
parchia semidea. I received a mutil-
lated specimen from Mr.
Nuttall, but
yours is in good order. I propose to
figure it in my 3rd or 4th vol.
(the
marbling of the under sides of hind
wing is much as in H. semele, but the
dark lines are broader.)
The Leucospis is a small sp'n of my
L. affinis.
The Prince of Musignano will deliver
you this letter if he goes so far as Sa- lem, if not he will put it in the Boston post office.
Melandrya labiata Nob.
DESCRIPTIONS OF OESTRID LARVAE TAKEN FROM THE JACK RABBIT AND COTTON-TAIL.
BY C. H. TYLER TOWNSEND, LAS CRUCES, N. MEX. Our jack-rabbits and cotton-tails are
frequently badly infested with bots, but the former are usually the worse in-
fested. The jack-rabbit of this region
is the Le@s callotis of Wagler ; while,
if I am not mistaken, our cotton-tail is the sage hare, Lefus artemisia of Bach-
man (or possibly L. &achmamWa.terh. '}
Jack-rabbits are sometimes seen with
immense, unshapely lumps on their
shoulders, sides or backs. Whether
or not these are due to bots, I can pot
say positively, as I never succeeded in
securing a rabbit in this condition.
I
have been told that when these lumps
are cut open, they reveal simply a col-
lection of sacs filled with a watery sub- stance, but without bots.
It may seem strange to record that
the jack-rabbit bot is a Dermatobia,
while the bot of the cotton-tail is, as a rule a Cuterebra. Such, however, is
the case. While I have not observed
any instance as yet of the Cuterebra in-



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August 1892.1 PSYCHE. 299
festing the jack-rabbit, I have on sev-
eral occasions taken small Dermatobia
larvae from cotton-tails.
On October 10, 1891, nine cotton-
tails were shot at Joblin's ranch, in the San Andres Mts. Seven bots were
taken from beneath the skins of these.
Two, and even three, were found in
the same cyst or "warble." Each cyst
communicated with the outside by an
orifice through the skin. The bots
were found on the back, belly and
shoulders. They are more shortened
in form than those taken from the jack-
rabbit, and become of a brown instead
of a gray tinge after immersion for
some time in alcohol.
The following
is a description of them :
Larva of Cuterebra s'p. from Lepus arte- misia (?)-Elongate oval, thick, broader be- hind than in front, dorsal surface convex in profile, ventral rather concave ; first and eleventh segments appearing nearly equal in width when the latter is extruded, but the eleventh appears smaller when sunken ; seg- ments gradually increasing in width from first to seventh, the seventh segment widest, remaining segments decreasing in width pos- teriorly; tenth segment telescopic, some- times protruded when the eleventh becomes more clearly outlined. All the segments, ex- cept the first and eleventh, densely and equally covered, both above and below, with short horny spurs, not spiny, the first seg- ment less bare than the eleventh. One pair of small, straight, approximated black jaws; antennae rather removed basally, approxi- mated distally meeting the jaws, each anten- na with two small ocellus-like dots on upper surface; in one specimen the antennae are horny and black so that the dots do not show; jaws and antennae sunk in a crescent-like or semicircular transverse cavity in the first or cephalic segment, the fir5t segment with a median notch in its upper anterior margin. Anterior (or superior) stigmata1 plate of last segment sub-circular, more or less complete- ly bifid longitudinally, situated in an a cres- centic transverse furrow 01- cavity, the furrow appearing long crescentic when the tenth segment is extruded, but short and hardly 4
crescentic when no1 extruded ; posterior (or in- ferior) plate situated in an elongate transverse pit, the margin of the segment below pit bearing a median notch and a slight lateral one on each side. Length, 18 to 20 mm.;
width of 7th segment, 9 to 9.75 mm. De-
scribed from two specimens collected Oct. 10. San Andres Mts., New Mexico.
On October 10, a jack-rabbit was
shot near Joblin's ranch, San Andres
Mts., from beneath the skin of which
six bots were taken, mostly on the back
and about the root of the tail. They
are rather elongate, and whitish.
Each one lay in its cyst or "warble"
The following is a description of them : Larva of Dermatobia s$. from Le'pus
callotis.-Elongate conical anteriorly, taper- ing posteriorly, not stout and thick, broader in front than behind, dorsal surface convex in profile, ventral concave; first segment small, much smaller than eleventh ; segments gradually increasing in width from first to sixth, the sixth segment' widest, remaining segments decreasing in width posteriorly; eleventh strongly extruded, joining the tenth by a constricted neck, more or less spherical, rather truncate posteriorly. Segments after the first sparsely covered with short black curved spines, showing most plainly recur- vate on last segment, which is nearly or quite bare on posterior surface. One pair of very small, rather removed, straight black jaws, situated in a crescentic transverse slit; antennae approximated, ocellus-like dots not visible, a pit in the first segment above and behind the antennae.
Stigmata1 plates




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PSYCHE. [August 1892.
on last segment consisting of four horny, reddish-brown, more or less curved, trans- versely corrugated ridges on each side, a small pit just above and between them; a swelling or prominence below them which is bounded inferiorly by a crescentic transverse furrow, the margin of the segment below
furrow being- more or less. strongly notched. Length, 19 to 22 mm. ; width of 6th segment, 5 to 6.5 mm. Described from five specimens perhaps not fully grown, collected Oct.
10.
San Andres Mts., New Mexico.
--
Two Nestors of entomology have recently
passed away within two days of each other, born in the first and dying in the last decade of the century. Dr. C. A. Dohrn was born in 1806 and Dr. Hermann Burmeister in 1807 ; the former died May 4, the latter May 2 last. Dohru was especially known as a coleopterist and as the head and front of the Entomological society of Stettin, Germany. Burmeister oc- cupied many fields, not only in entomology, but in general zoology, in geology and espec- ially in paleontology during the past 30 years, since his appointment to the direc- torship of the National museum of Buenos Aires. He was buried at the cost of the
state and the President of the republic was present at his funeral. Dr. Carlos Berg
another entomologist of distinction, long his assistant, succeeds him as director of the museum.
PROCEEDINGS OF SOCIETIES.
CAMBRIDGE ENTOMOLOGICAL CLUB.
13 May, 1892.-The 171st meeting was
held at 156 Brattle St. Mr. S. H. Scudder was chosen chairman and Mr. A. P. Morse
secretary pro tempore.
Mi-. A. B. Mayer was elected to active
membership.
Mr. S. H. Scudder called attention to a
short discussion by Emery in the February Bulletin of the Socidt6 Vaudoise (v. 27, p. 258) on the origin of the ant fauna of Europe, This bot must occasionally continue
all winter in the animals, as small ones, apparently this species, were taken from cotton-tails shot Oct 24 and 29.
On Oct. 14, a jack-rabbit was shot
which had a small sac beneath the skin,
apparently containing young bots.
Closer examination revealed only re-
mains of small bots, which had died
from some cause.
a result of his studies of the ants found in Sicilian amber as compared with those of the amber of Samland and the existing fauna of Europe. The existing fauna he divides into three groups, a boreal, an Indian (those having Indo-Aubtralian and South African affinities), and a cosmopolitan, and remarks regarding the first two that in passing from the north southward or from the present time to the amber epoch, the boreal group dimin- ishes and the Indian group increases in im- portance; the former is absent from the
Sicilian amber and the latter in the existing Scandinavian fauna. He is of the opinion that an Indian fauna inhabited Europe in eocene time and that a new fauna, derived from the polar regions, advanced upon it, but was checked in its southward march. by the sea which then crossed middle Europe, so that it never reached so far as Sicily although it left its impress on the fauna of the Baltic amber.
Mr. Morse exhibited a specimen of that
rarity, the male of Pelecinus $oZycerator, taken by him at Provincetown, Mass., in
September. He also showed two males of
Colzas interior collected at the summit of Keai-sarge Mountain, near North Conway,
N. H., July 2, 1891, and several specimens of CoZias fhilodice showing variations in the discal spot on the upper surface of the fore wings; these, in one male, were almost en- tirely absent, and, in a white female, very large and triangular with the apex and
longest sides directed outward.




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