THECLA. 91 



with black; primaries underneath ash-colored, mottled with white; 

 in the disk is a black crescent and a curved macular band, consist- 

 ing of mostly oblique black crescents edged with white, especially 

 on their under side. The wing terminates posteriorly in- a broadish 

 brown band, formed chiefly by obsolete eyelets; secondaries brown, 

 underneath spotted and striped with black and white ; towards the 

 posterior margin the white spots are arranged in a transverse band 

 parallel with it, and as in the primaries ; the wing terminates in 

 several obsolete eyelets. 



Canada. — Expands one inch. 



KlRBY. 



24. P. americana Harris MS. 



The fore wings on the upper side are coppery-red, with about 

 eight small square black spots, and the hind margin broadly bor- 

 dered with dusky-brown ; the hind wings are dusky-brown, with a 

 few small black spots on the middle, and a broad coppery-red band 

 on the hind margin. The wings expand from lyL to \\ inch. 

 The caterpillar is long oval, and slightly convex above, and of a 

 greenish color ; it probably lives like the P. phleas, on the leaves 

 of dock and sorrel. The chrysalis, which is usually suspended 

 under a stone, is light yellowish-brown and spotted with black 

 dots. 



Massachusetts. 



Harris. 



THECLA Fab. 



Palpi nearly straight, sometimes longer than the head ; last 

 article naked, rather long, subulate*or a little acicular; head more 

 narrow than the thorax ; eyes rather prominent; antennce of mode- 

 rate length, terminated by a club usually elongate and sometimes 

 nearly fusiform ; secondaries prolonged in one or more thin tails, 

 sometimes but rarely simply dentate. 



1. T. halesus Fab. Sjst. emend. Ill, 273. T. dolichos Hiibn. Figured 

 in Cram. 98. Herbst, pi. 295. Hubn. Zutr. 219. Boisd. et Lee. 

 pi. 25, p. 83. 



Upper side of the males, beautiful glossy blue. Primaries have 

 at the extremity a black border of moderate width. Secondaries 



