62 Journal New York Entomological Society. [Voi. v. 



mum at joint 5 and then slopes to the tail, the slope becoming steeper 

 after joint 11. Lateral space broad, nearly perpendicular and contin- 

 uous in direction with the broad, not retracted subventral space. Sub- 

 dorsal ridge well indicated by the abrupt change in direction between 

 back and sides ; lateral ridge slight ; subventral edge prominent, two 

 setae on each segment. Horns at first as well developed as usual in the 

 group (larvae of type 2), but soon reduced, finally to small rounded 

 spinose buttons. The subdorsal horns of joints 3, 4, 5, 8, 11 and 12 re- 

 main longer than the rest; that on joint i^ becomes early consolidated 

 with its fellow into a tail directed posteriorly, at first cleft and spiny, 

 later more uniform. The lateral horns are all small, subequal, situated 

 on joints 3, 4, 6 to 12 as usual. The head is concealed under joint 2, but 

 this joint is scarcely retracted, its spiracle remaining exposed by a lat- 

 eral retraction of joint 3. The spiracle on joint 5 is moved up out of 

 line with the rest, all being plainly visible, as the whole subventral re- 

 gion is freely exposed. 



After stage I, the spines on the horns are of the stinging type, but they 

 are gradually reduced in size and number and become functionless. In 

 the last stage they are so much aborted that they are imperfectly erected 

 after the molt and the group remains pointing inward over the back in 

 the case of the larger horns. The small, black, piercing caps remain 

 and the spines do not become setiferous, except in the case of some of 

 the smallest anterior horns. 



Depressed spaces feebly developed, represented by black spots; (i) 

 round, distinct, paired; (2) and (3) tiny dots, segmental; (4) distinct, 

 narrowly elongated and slightly oblique, in the middle of the lateral 

 space; (7) slightly elongated, alternating with the spiracles; (8) a tiny 

 dot above the subventral edge. 



Skin covered with very small, dark, pointed spines, which become 

 round, clear granules just above the subventral edge only. Small patches 

 of caltropes are present on the upper side of the reduced lateral horns on 

 joints 6 to 12. No detachable spines. 



Affinities, Habits, etc. 

 This larva seems to represent a recent offshoot of the main stem of 

 the spined Eucleids. In its first stages it is very closely allied to Eiiclea, 

 but finally the colors and armor degenerate and the shape is altered to 

 one adapted for concealment. This direction of modification is indi- 

 cated in both Euclea delphinii and Adoneta spimiloides , but here it is 

 fully carried out. The tail, which is so like that of Packardia and EuU- 



