Article beginning on page 177.
Psyche 9:177-178, 1900.

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March, 19oz.l PSYCHE. 177
mens, before the Entomological society orifice in mounted specimens under of Washington.
The size of the genital
cover-glass is I mm. in diameter.
Measurements of the antennal segments cf the three full grown females, the length of which were 54 mm. 5 broad and 4 high. The measurements in the tables arc in inici-omilli- meters.
Segments. I 2 3 4 5 6 7 8 9 1 0 1 1
136
120
16 56
52 64
64
80
80 80
180
136
no
16
68
,sa
68
76
76
80 80
180
130
120 136 '
60
51
68
76 So
80
80 160
120
120
136
64
48
64
76
So
,So
80 180
120
120 136
52 40
72
56.
80
80
72 168
120
t20 120
60
48 64
64
68
76
68 168
Measureinenis of the antennal segments of the younger forms. 9 4 rnm. long, 3 broad,
a& high, 10 and 11 segmented,
Segments). I 2 3 4 5 6 7 8
120 108 120 Go 60 64 73 So
120 100 104 56 48 60 60 72
120 112 112 52 48 68 60 56
80 100 120 48 40 so 52 60
80 84 110 72 40 44 40 40
Measurements of the segments of the newly hatched larvae. Segments. 1 2 3 4 5 6
52 s6 60 44 44 '40
52
60
60
48
44 132
53 60 Go
48 4.0 132
k .
53 60 60 48 40 w [ George B. King.]
LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. - XX. BY HARRISON G. DYAR, WASHINGTON, D. C.
Heliomata cydudda Grt.
Egg.
Laid singly on the edge of a leaf
or in a hole or on end on the petiole.
Flat-
toned cylindrical, rounded, one diameter dis- tinctly shorter, ends flattened, the basal one the most so, but rounded. Eight ribs pro- jecting at the rim of the micropylar area increasing to a few more by interpolation at about two-thirds the distance toward the other end; raised, coarselv beaded with
nearly contiguous clear granules, a little waved and also slightly flexuous in course, joined by thick, curved cross-striae, a little irregulsu and not always quite parallel, one to each bead. At the base the sculpture
becomes confused into rounded pit-like retic- ulations of which confusion the short inter- polated ribs seem a part. Coarse lumpy




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178 PSYCHE. [March, 1901
reticulations also in the small level micropy- lar area. Dark leaf green, the beading a shade paler, not white. Size .6 X ,357 X 25 mm.
5iuge I. Head round, higher than wide,
scarcely hilobed, erect, free from but lower than joint 2 ; sordid luteous, grayish on the vertex, ocelli black, mouth brown ; width about .2 n7m. Body stout and rather thick, normal, smooth, incisures distinct, the scg- ments a little bulging ventrally. Sordid translucent white, pale green from the food ; very faint brownish subdorsal mottlings the whole length, Tubercles small, black in
while rings. Shields concolorous, uncorni- fied, cervical shield faintly inteous, the rim of joint 2 before whitish. Setae small,
obscure.
Stage If. Plead rounded, slightly bilobed, erect, slightly lower than joint 2; pale In- teous, slightly shining; width .35 mm.
Body short and thick, normal, incisures dis- tinct; translucent, pale green from the food, tubercles greenish dusky, rather distinct, pale edged. Faintly indicated dusky longi- tudinal lines, narrow subdorsal and broad lateral, but very obscure. Thoracic feet blackish; setae short, black, distinct. Ab- dominal feet and obsolete shields concolor- ous with body.
Stage III. Head broad, bilobed, rounded, flattened before, erect; pale yellowish, not shining, ocelli black; width .6 mm. Body short and thick, sn~ooth, uniform pale green, translucent, not shining, incisures folded and whitish. Feet concolorous ; no shields ; no marks. Tubercles minute, blackish ;
seme short, dusky.
Stag's ZK Head round, circular from
before, lobes full, slightly bilobed, erect, free; light green, ocelli smali, black, anten- nae moderate, whitish; width 1.15 mm.
Body short and thick, the central segments only a little longer than the end ones and shaped about as in Noctuid larvae, the ends being slightly contracted. Feet normal, the thoracic ones moderate, the abdominal on joints 10 and 13, the latter with large tri- angular plate; anal plate rounded; cervical shield divided into two well separated ellip- ses. Tubercles distinct, rather large, not elevated, concolorous; setae short, black. Entirely light green without marks, the
plates and tubercles slightly shining-, the skin dull. No anal prongs. Tubercles nor- mal, ia to iib equally spaced on joints 3 and 4 and separate. Spiracles narrowly dark
rimmed.
Stage V Head round, circular, flat before and a trace flattened on the apex; dypeus two thirds to vertex, the paracljpeal pieces very narrow and obscure; finely shagreened ; width 1.9 mm. Body robust, the segments
not elongated, the end ones proportionately a little contracted, obscurely 6-annulatc. Feet normal, short, the anal pail: triangular and slightly produced at the upper angle; anal plate elongated, rounded. Tubercles very small, not elevated, distinct; setae short, pointed; both black. The coloration varies from green to more or less heavily spotted. In the former the head is luteous green, subtransl&ent, ocelli dark. Body
green like the leaf, the folded incisures yel- lowish, faint dotted whitish subdorsal and lateral lines; subventral fold yellowish ; spir- acles brown rimmed; dorsal vessel darker green. In the spotted form the head is
green mottled broadly with brown spots
over the vertex. Body green with many
fine brown specks forming triangular brown spots subdorsally on joints 5 Lo 8, pointed before and in general segregated into geini- nate parallel lines. The lines are subdorsal, lateral and subventral, enclosing paler spaces, but very obscurely. Aiso a faint dorsal
line. The donings are somewhat mottled,
heaviest centrally on the segments, con- tracted, and therefore darker, on joints 10 to 13, the anal plates spotted. Venter rather broadly green, paler lined. Feet brownish dotted.
The larvaespun very slight webs of brown- ish silk in the ground at the surface and



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March, 19011 PSYCHE.
turned to thick stout pupae.
Abdomen small
tdpering. Dark brown, the cases a little greenish. Body coarsely punctured, cases hagreened as if irregularly eroded; abdomi- nal segments ridged in front. Cremaster a long spine, widened at base and with two recurved hooics at tip.
Food plant probably locust (Kobinia fseud- acacia); at least the larvae fed readily on this plant and the moths were taken flying among the trees. Eggs June roth, mature
larvae July 10th. Single brooded, the fall and winter being passed as pupa. Larvae
from Washington, D. C.
TIIE KATYDID'S CALL IN RELA-
T10N TO TEMPERATURE.
The following observations on the fre-
quency with which the call of the Katydid (Cyrto-phylltts per.@ir.z'llatus) is repeated and their relation to the temperature at the time were made in Milton, Mass., by Mr. Roland Hayward, between August 26th and October 7, and are here printed from his memoranda. The first column gives the date, the second the temperature in degrees of the Fahrenheit scale, the third the number of cans " katy- did" or "she did" per minute. In all cases the? were counted for at least one minute. Aug. 26
27
28
29
30
3'
Sept. I
2
3
4 73O
8 6S"
9 68O
10 63O
I1 73O
12 (wind?) 68"
13 Go0
14 &So
21 67O
22 63"
24 6j"
2 5 5SC
26 58"
27 64--
29 - Go0
30 63"
Oct. 1 c so
4 64O
5 (7 p. M.) 72'
(8.30 P.M.) 7uo
(10.1s P. M.) 68O
7 63'
PROCF3DTNGS OF THE CLUB.
11 January, 8901. The 217th regular and
24th annual meeting (since incorporation) was held at 156 Brattle St., Mr. A. P. Morse in the chair.
The annual reports of the officers were
read. The following officers were elected for 1901 : secretary, Roland Hayward; treasurer, Roland Hayward ; librarian, Samuel H. Scud- der ; members at large of executive commit- tee, A. P. Morse, S. 1-1. Scudder.
The annual address of the retiring" presi- dent, J. W. Folsom, was read, entitled: The distribution of holarctic Collembola,-pub- ished in full in PSYCHE.




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