Article beginning on page 78.
Psyche 10:78-79, 1903.

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PSYCHE [April
curta Prov.
solitaria Rite.
porterae Ckl!., Mojave Desert.
AHTHOPHORULA Ckll.
XYLOCORA Latr,
c-alifornica Cr.
orpifex Sm.
varipuncta Patt.
fimbriata Fabr.
CEXTKIS Fabr.
hoffmanseggiae Ckll.
PSITHYRUS Lep.
californicus (Cr.).
BOMBUS Latr.
californicus Sm.
cen trails Cr. ( ? = ftavz/yons Cr.) .
proximiis howardii (Cr.).
occidentalis Greene.
nigrocinctus Prov.
crolchii Cr.
morrisoni Cr.
nevadensis CI.
fervidus Fabr.
edwardsii Cr.
inellifera L. (mellzjica La), introduced. LIFE HISTORIES OF NORTH AMERICAN
GE0METRIDAE.-XL.
BY HARRISON G. DYAR, WASHINGTON, D. C.
Qcia cognataria Guende.
The egg has been noticed by A, P. W. Cramer and there are several good descriptions of the mature larva extant, besides a poor
figure, published by Lintner. The larval stages have not been before noticed. I am indebted to Mr. H. H. Lyman of Montreal for the eggs, which hatched before arrival. The larvae fed readily on maple, but are, apparently,rather general feeders.
EGG.
Elliptical, roundedly and distinctly flattened above and below, ends rounded and much alike, no distinct flattening of inicropjlar end nor marked depression of the other end. Reticulations distinct, in longitudinal rows, forming waved ridges, the cross striae being a little weaker than the longitudinal lines. Reticulations confused at the ends, and less strongly marked.
Size .6 X .4 X 4 mm. "Color bright green. Laid loose in large num- bers " (Lyman).
STAGE I.
Head rounded, bilobed, full, blackish over the lobes, dull sordid on dypeus and mouth ; sutures of clypeus deep, well marked; width about .3 inin. Body normal, mod- erately robust, whitish, becoming sordid green from the food ; a dull purple, broad, subdor- sal band, obscurely joined intersegmentally on the abdomen and completely so on joints 10-13, separate on thorax; a broad, diffuse, dull purplish ventral band, later resolving into a series of medioventral patches. Thoracic feet black, abdominal ones dark outwardly. Tubercles black, small, normal ; setae inconspicuous. Cervical shield colored like the body, undifferentiated, but anal plate and anal leg shields triangular, broadly blackish edged.



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STAGE 11. Head rounded bilobed, squarish, a depression at apex of clypeus ; width .5 mm. Body moderately robust, normal, subventral fold rather prominent. Greenish and brown, mottled, nearly all green along the subvcntral fold, venter and dorsum more brown, especially about the feet. Head reddish brown, reticulate in lighter, ocelli black; feet dark. Anal feet and shield reddish, resembling the head. No plates ; tubercles obsolete.
STAGE 111. Head high bilobed, flat before, lobes rounded, projecting above the ciorsum, pale yellowish sordid, thickly mottled with brown ; width .8 mm. Body rather robust,
normal, venter somewhat flattened. Pale yellowish, this color showing- on subvential fold but elsewhere thickly mottled in dead leaf brown. Thoracic feet pale greenish, foot of joint 10 dark brown outwardly.
Anal shield lighter brown, resembling the head. A white patch
on each side of clj-peus and across it more faintly. STAGE IV.
Head high bilobed, flat be-fore, lobes subconic, projecting rather widely; brown, mottled in white before and also a little with smoky, a blackish arc at apex of cly- pens ; sides less strongly mottled; width 1.3 mm. Body rather short, moderately robust, normal. Smooth green, overlaid with a brown shade, most distinct at the contracted ends ; joints 2-4 and 10-13 slightly shining, without defined markings, only the faintest traces of pale lines showing at the ends,
STAGE V.
Head high bilobed as before, red-brown, mottled with white, which forms curved streaks on the faces of the lobes ; vertex behind and sides at neck dark shaded; width 2 mm. Body cylindrical with a process on joint 9 bearing tubercle iii, rounded and cushion- like; no cervical shield, anal plate triangular, anal foot plates large, elongate, with stout anal prongs. Light red-brown to dark sordid brown, irregularly shaded, darker on the anterior halves of the segments, darkest ventrally. Feet dark at base. Setae short, stiff, black, from indistinct tubercles.
STAGE VI.
Head high bilobed, flattened before, lobes forming low cones, widely sep- arated by a broad notch ; clypeus rather high ; surface shagreened ; wood brown, mottled and shaded with dark brown, darkest in a small patch at apex of paraclypens ; width 3.6 mm. Body cylindrical, stout, joint 2 slightly collared at the anterior edge and angled subdorsally, the angles dark and preceded by pale marks which are exposed or concealed according to the position of the larva; third pair of thoracic feet usually extended while the first two pair are appressed; a slight ventral prominence on joints 6, 7, and 8 bearing small spines ; a large lateral conical prominence on joint 9 above and before the spiracle with black spines ; a low rounded collared hump on joint 12, marked in pale subdorsally. Feet normal, a white sub- ventral fringe between those of joints 10 and 12 ; anal plate and leg shields large, gray. Body green, more or less marked with gray and brown, sometimes mostly brown. The gray occurs in segmentary hands, darkest on joints 9 and 12, the abdominal feet gray. Dorsum
brown shaded. Thoracic feet light reddish with nearly black shading at the bases. Spiracles
reddish. Skin with many secondary granules, mostly white, hut becoming black spines on the humps and clav-ate, capitate papillae in the subventral fringe of joints 10-12. Primary setae pointed, black, from small black tubercles, normal except that about five setae represent tubercle vii.
The larvae transformed to large red-brown pupae in the earth and hibernated in this stage.




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