Article beginning on page 260.
Psyche 3:260, 1880.

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ADVERTISEBIEHTS
should reach the editors by the loth of the month preceding the one in which they are to appear.
MANPS CATALOGUE OF PLANTS.
Catalogue of the Phamogamous Plants of the United States, east of the Mississippi, and of the Vascular Cryptoga~nous Plants of North America, north of Mexico. ad ed.
The recognised st&& exchange fist.
Bach species bears the same numero as in the 1st ed., so that the 3824 numeros serve to designate the respective species. Price : 35 cte.; 3 for $1.00: 13 for 53.m; sent free by mail.
B: PICKMAN MANM,
Department of Agriculture.
Washington. D. C.
TORTRICTDAE WANTED.
I am desirous of obtaining as many North Ameri- can TORTRICICAE as possible, for the purpose of studying this family. I shall be glad to name and return any TORTRICIDAB forwarded to me for this purpose, save such as may prove new and desirable to retain for description
Pack carefully, and direct to
PROP. C. 3H. I ERNALD, Orono, Un.
CANADIAN ENTOMOLOGIST.
Edited by William Saundeaa.
Published monthly. The volume for 1881 is the iflh. Price $x.w per annual volume (together with the Annual Report of the Entomological Society of Ontario). Address remittances to
E. BAYNBS REED, London, Ontario.
BULLETIN of tht BROOKLYN EIVTO~WO-
L~G/CAL SOCIETY.
Edited by F. 0. Behanpp.
Published monthly. Price, $l.m per annual vol- ume. Address remittances to the Editor,
g Broadway, E.D., Brooklyn, N.Y.
PAPfLiO.
Devstcd to Leptdaptera exclusive//,
Edited by a committee. Published ten times la the year. The volume for t88x is the 1st. Price, per annual volume. Address remittances to MR. HENRY EDWARDS, 1
185 East 116th St.. New York, N.Y.
European exchanges and communica-
tion* will receive more immediate attention by being addreswd, after I Oct. 1881, to GEORGE DIMMOCK,,
30, rue des Carmes,
Paris, France.
LEPID OPTERA.
Living cocoons, pupae and ova of American Lep- idoptera bought or exchanged for other species, by Monsieur ALFRED WAILLY, (Membre-Laudat de la SociSt4 d'Accli[natation de France),
110 Clapham Road, London, S. W.,
England.
DIMMOCK'S SPECIAL B/BLIOGÌöAPH/JBS
NO. I. THE ENTOMO~OGICAL WRITINGS OF
JOHN L LECOKTE. Compiled by Samuel Hen-
shw. Edited by George Dimmock. Nov. 1878. 11 p. t 19 X 12.5. Price, 30 cents; on 5 X 1x5 title- .
GEORGE H. HORN. Compiled by Samuel Henshaw. Edited by George Dimmock Jan. 1879. 6 p. t 19 X ia.5. Price, ao cents; on 5 x 12.5 title-slips, 50 cents.
NO. 3.
THE WRITINGS OF SAMUEL HUBBA~D
SCUDDER.
Compiled and edited bv Geortre Dim-
-
mock. Ang. 18/o. a8 p. t (9 X 12.5. Price 50 cents. Address G. M. DIMMOCK,
679 State Street,
Springfield, Mass.
NORTH AMERICAN FERNS.
Check-lists of the Ferns of North America north of Mexico, enumerating31 genera, 132 species and 15 varieties, o
mail on recei
copies.
n one octavo page, Will be sent by
pt of the price, 15 caw per dozen
S. STEBBINS, Springfield, Mass,
The undersigned is desirous of obtaining, by ex- change or otherwise, specimens of as many species of the COCCIDAE as possible, for the purpose of making a study of the North American forms. Those found infesting cultivated plants especially desired. Living specimens preferred when they can be ob talned. J. HENRY COMSTOCK,
Department of Entomology,
The Cornell University,
Ithflca, K.Y.
No. 86 wax issued 18 Nov. 1881.




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