LEPIDOPTERA. 



The larva is banded with yellow, black, ^nd white, 

 and has two pairs of long thread-like horns ;— one 

 pair on the first thoracic segment, and another pair on 

 the eighth abdominal segment. It suspends itself by 

 the tail when about to transform. The chrysalis is 

 clear pale green, marked with black and golden spots. 



This species feed on most of the different kinds of 

 Milk-weed (Asclepias). There are two broods each 

 year ; the last brood hibernates in the perfect state- 

 (3. ni.. ,42). 



The genus Argynnis "is readily recognized by the 

 numerous round and triangular silver spots on the 

 under side of the hind wings. The very spiny cater- 

 pillars have a round head, and the spines are branched, 

 two of the prothoracic ones being the largest and 

 reaching over the head. The angular arched chrysa- 

 lides have the head either square, or slightly notched, 

 with a smooth thorax, while on the back of the abdo- 

 men are two rows of usually gold colored tubercles. 

 They usually feed on violets, and may be found from 

 May to July." (Packard i, 251). The following .spe- 

 cies are found in Ithaca,— /i. Idalia Drury (very rare), 

 A^Aphrodite Fabr., A. Cybele Fabr., A. Myrina Cra- 

 mer, and A. Bellona. 



In the genus Faw^jjrt " the wings are notched and 

 angulated or tailed on the hind edges, while the palpi 

 are long and beak-like. The larva is cylindrical and 

 stoutly spined, the spines being long and branched. 

 The caterpillars are gregarious during the early stages. 

 The head of the chrysalis is deeply notched, or fur- 

 nished with two ear-like prominences ; the sides are 

 very angular, in the middle of the thorax there- is a 

 thin projection, in profile, somewhat like a Roman 



