PAPILIONID^E. 265 



The genus Lyccena is azure blue throughout, with dark mark- 

 ings. Lyccena neglecta Edwards (Polyommatus pseudargiolus 

 Harris) is very common about the Kalmia and Rhodora in 

 May, and a new brood appears in June and July. It has been 

 reared by Mr. Saunders, from whom I have received the pupa, 

 which is a little hairy, being much smaller than in Thecla 

 Acadica and paler ashy. It is spotted quite thickly with black 

 blotches, and on each side of the abdomen is a subdorsal row 

 of rather large, black, contiguous blotches, more distinct than 

 in T. Acadica. It is .30 of an inch long. 



L. co'myntas Harris is quite common southward. It differs 

 from the other species in having a little tail on the hind wings, 

 at the base of which are two deep, orange-colored crescents. 

 It flies in July and August. The caterpillar lives on the Lespe- 

 deza. It is green with three darker stripes. The brown chrys- 

 alis has three rows of black spots on the back. 



Thecla differs from the two preceding genera, in its conspic- 

 uous tails and the longer clubs of the antennae and its dusky 

 brown hues. The larvae are longer and flatter, and they usually 

 live on trees. Thecla humuli Harris feeds on the hop-vine. 

 It flies in July and August. Thecla niplion Godart, a dusky 

 rust-red butterfly, feeds on the pine. The larva is green, with 

 a dorsal yellow stripe, and a white one on each side. It 

 changes to a short, thick, greyish pupa, with two rows of 

 blackish dots, and beyond these a row of rust-red ones. Mr. 

 Saunders has sent us the following description of the cater- 

 pillar and chrysalis of Thecla Acadica Edwards, found by him 

 at London, Canada West, feeding on the willow, June llth 

 and 18th. "It was .63 of an inch in length, with a very small, 

 pale brown head, withdrawn within the prothoracic segment, 

 when at rest. The body is rather dark green, and is thickest 

 from the mesothoracic to the sixth abdominal segment. There 

 is a darker green, dorsal line, the dorsal region being flat, 

 rather wide, and edged on each side with a raised, whitish yel- 

 low line, and the sides of the body are inclined at almost an 

 acute angle, and striped with faint, oblique lines, of a greenish 

 yellow. A whitish yellow line borders the under surface, be- 

 ginning at the anterior edge of the second segment (the head 

 is, for convenience, counted as a single ring, or segment) and 



