46 rROCEEDINGS OF THE NATIONAL MUSEUM. 



oped, the femur being actually and proportionately the largest found 

 in the genus. It is excavated interiorly near the tip to receive the short, 

 stout tibia. The epiphysis is attached at a little below the middle and 

 extends to the tip. Eighteen males and twenty-three females were 

 compared. 



LARVA. 



Smith and Abbot, Lep. Ins. Ga., 1797, II, pi. xciii (aceris). — Harris, Ins. Inj. 

 ^'eg., 1841, p. 317. — GuKNEE, Spec. Gen., I, 1852, p. il {hastuUJ'era). — Harris, 

 Ent. Coiresp, 1869, p. 311.— LiNTNER, Eut. Cont., 1872, p. lb% {hasUdifem) .— 

 CotjuiLLETT, Papilio, 1881, 1, p. 6.— Dimmock, Psyche, 1885, IV, p. 274.— Pack- 

 ard, Fifth Kept. U. S. Ent. Comm., 1890, p. 397.— Comstock, Manual Stud, 

 Ins., 1895, p. 307, fig. 373. 



Egg. — Solitary, on the upper side of the leaf. Circular, flat, with 

 almost eighty ribs on the margin, the ribs finely wavy at the summit. 

 Grooves between even, smooth, becoming confluent reticulate toward 

 apex and diminishing rapidly in number. Micropyle coarsely irregu- 

 larly reticulate, (ireen, the upper i)art dotted with brown so thickly 

 as to leave only rings of little green spots. Diameter,!. 2 mm ; height, 

 0.25 mm. 



Stage I. — Head round, bilobed, mouth produced, tips of jaws brown; 

 width, 0.4 mm. Body colorless, green from food; setae single from low 

 concolorous tubercles, 1 on Joints 5 to 14 black, the rest whitish, long 

 and slender, spinulated. Head setae above, and one of cervical shield 

 also black. Tubercles whitish. Skin shining, faintly annulate, without 

 marks. 



Stage II. — Head bilobed, white; width, 0.6 -mm. Body green from 

 food, no marks; hairs tine, long, and white, a few black ones dorsally 

 rising in bunches from small concolorous warts, normal. Joint 12 a 

 little enlarged. 



Stage III. — He^d white, a large black patch over the lower half of 

 each lobe, irregular above, and a small patch over clypeus; width, 1 mm. 

 Body green from food ; no marks. Hair long, abundant, from low, small 

 warts, M'hite, a few black ones dorsally, especially in straggling tufts on 

 joints 5, 7, and 12. Possibly a few secondary hairs, but not distinct. 

 Later traces of a geminate dorsal and single subdorsal black line. 



Stage IV. — Head bilobed, all black, labrum and setae white; width, 

 1.G5 mm. Body greenish white, a double dorsal and a lateral black 

 line more distinct than before. Hair long, dense, all white, except a 

 long black pencil from wart I on joint 5, 7, and 12 arising from a black 

 patch, those on joints 5 and 7 double and divaricate. Warts white, 

 obscure subventrally. Much short secondary hair is present. Thoracic 

 feet, abdominal leg plates, and joint 14 black. Later the hair is yel- 

 lowish, excei)t at the tips. 



Stage V. — Head black; width, 2.5 mm. Body greenish wiiite, with 

 double dorsal, single lateral, and stigmatal black lines, and black 

 shading subventrally and ventrally. Legs black and the whole of 

 joint 13 dorsally, as well as dorsal spots on joints 5, 7, and 12. Hair 



