284 



elevated points; first three segments pale, immaculate, retractile; a dark 

 reddish dorsal line, and body above sprinkled with purple white dots; ob- 

 lique lines, and elongated posterior lines, ending at root of tail, purplish 

 white; body beneath very pale purple; tail short, straight, pale blue, and 

 rough Avitli minute, blackish points. July 28, made its cocoon on top of 

 earth in pot; winged July 3, 1851. 



Thyreus Abbotii Swains. [PI. iii, fig. 1.] 



Found the larva on the ground near grape vines and currant bushes. 

 The drawing made Aug. 11, 1821; after which the insect escaped from the 

 pot where it had been placed. Two young ones of a greenish white color, 

 found on the Ampelopsis quinquefolia by Rev. Thomas Hill, were brought to 

 me June 2G, 1854. They were one inch and one tenth long, of a whitish 

 color, transversely wrinkled, with a row of black dots on the back (one on 

 top of each segment), and a rounded, prominent tubercle on top of the 

 eleventh segment, of a deep yellow or pale orange color, semitransparent 

 and polished, and nearly encircled at base with a deep black line. Pro- 

 legs not perceptibly unequal. Motion not semigeometrical. July 1st, these 

 larva? cast their skins. They grew well, eating voraciously. Attitude at 

 rest stretched at full length, not sphingoid. Body nearly cylindrical, not 

 flattened at sides, not colored with large black spots beneath, gait regular 

 and slow in creeping, — not looping at all. 



July 5th, Mr. Hill brought me four more large larvas similar to the first 

 two in their present dress, but larger in size, also one other of the same 

 form and size, also with a similar tubercle on eleventh seirment, but havinjj 

 green spots on back and sides. The green-spotted one Avent into the ground 

 the 8th of July. Tiie others without change ceased eating between the 

 lOtli and 13th of July. Chrysalis on top of ground, July 14th; three othets 

 on the 15 th. 



JEgeria cuctu'bitse Harr. 



Found sununer and winter near the roots of squash vines and also in the 

 roots. 



Aug. 15, 1841, fully grown larva. Somewhat depressed, fleshy, soft, taper- 

 ing at each extremity; segments, ten in number, very distinct, the incisions 

 being deep; the eleventh or last segment minute and hardly distinct from 

 the tenth. Head retractile, small, brown, paler on the front, and with the 

 usual V-like mark on it. First segment or collar with two oblique brown 

 marks on the top, converging behind. A dark line occasioned by the dor- 

 sal vessel seen through the transparent skin along the top of the back, from 

 the fourth to the tenth rings inclusive. True legs six, articulated, brown; 

 prolegs wanting, or replaced by double rows of hooks in pairs beneath the 



