NO. 1140. NORTH AMERIC AX NOCTUIDAE— SMITH AND DTAE. 153 



the male and have only a slight yellow suffusion in the female. In the 

 second series the males are as dark as the females of the first, while 

 the females are distinctly darker. Unfortunately both forms have been 

 bred from the same lot of caterpillars, so that this does not point to 

 even a good variety. The difference indeed is not great, and is not 

 noticeable, except with a good series of specimens, where the massing 

 of the two forms increases tbe apparent difference. In head structure 

 this species is like the preceding, but tbe legs are decidedly stouter, 

 the femur jtarticularly being very lieavy, while the tibia is stouter and 

 shorter in proportion. The epii)hysis is situated nearer to the tip, 

 which it easily reaches. The harpes are much as in the preceding spe- 

 cies; the clasper is long, moderately slender, not much curved; the 

 inferior process is distinct, acute, and somewhat beak-like. This is one 

 of the common species. 



LARVA. 

 Thaxter, Papilio, 1883, III, p. 16. 



Stage I. — Head blackish testaceous, whitish above the mouth ; width, 

 0.4 mm. Body greenish, with black warts bearing long, stiff' hairs. Cer- 

 vical shield and anal plate blackish. On joints 5, 8-9, and 12 a series 

 of diffuse, brown, dorsal patches. Warts without subprimary ones, 

 three hairs from la -\- lb, on thorax, and from I on abdomen ; otherwise 

 single-haired. 



Star/e II. — Head bilobed, brown-black, shining, labrum white, and a 

 white line on each side of the clypeus; width, 0.(5 mm. Body greenish 

 white, the warts large, black, smaller on joint 11. Hair bristly, black, 

 sparse on joint 11, some overhanging the head. 



Stage III. — Head bilobed, fiat in front, black and shining; mouth 

 reddish ; width, 0.9 mm. Body enlarged dorsally at joint 12, and aj)pa- 

 rently so at joint 5, as this part is held highest. Body whitish, almost 

 white in places, especially subventrally on joints 10 and 12. Warts 

 normal, black, IV very small. Hair bristly, black, weak on joint 11, 

 thick and tufted dorsally on joint 5. 



Stage IV. — Head bilobed, rounded, shining black, clypeus bordered 

 with white, mouth pale brown; width, 1.4 mm. Body black, a subdor- 

 sal row of pale yellow spots, forming a band on joints 10-12; a narrow 

 line below it; a similar band subventrally. Hair thick, bristly, black 

 and white, with tufts of shorter soft hairs from warts I to III on joint 5, 

 and two smaller divergent subdorsal ones on joint 12. A narrow white 

 subdorsal line. In another example there were also white tufts from 

 wart II on joint 4 and warts I and II on joint 6. 



Stage T".-— Head high, shining black; mouth and two bands, conver- 

 ging above, on each side of the clypeus, white ; width, 2 to 2.2 mm. Body 

 as before, with some long white hairs, the tufts on joint 5 brown or 

 black; a smaller white tuft on joint 6; short divergent black pencils on 

 joint 12. In Californian examples the subdorsal and sub ventral bands 

 become strongly shaded with red, while they are jjale in Eastern exam- 

 ples at this stage. 



