.290 LEPIDOPTERA. 



to this genus. The cocoon of the latter species is tough, leath- 

 ery, brown, and nearly spherical. The larva of P. pitheciwni 

 Smith is broad, ovate, flattened, Avith six long, tongue-like, 

 fleshy lateral appendages. It feeds on the 

 ':^^^j plum, cherry and apple. 



' In Limacodes the fore wings are oblong, 

 the costa being straight, while the hind 

 wings scarcely reach to the tip of the ab- 

 domen. The fore wings are often crossed 

 by straight lines forming a V. L. scapha Harris (Fig. 219) is 

 light cinnamon brown, with a dark tan-colored triangular spot, 

 lined externally with silver, which is continued along the costa 

 to the base of the wing and terminates sharpl}^ on the apex. 

 The larva, as its specific name indicates, is boat-shaped, being 

 of the form of a castana nut, and is green, spotted above w'ith 

 brown, and pale beneath, while the sides ^^f^v,^ ^ /^v«^*^ 

 of the body are raised, the dorsal surface ' - •\^ . f ^g^ / 

 being flattened. It constructs a dense, oval, ^^ 



spherical cocoon, surrounded by an outer '^^-^-- U/ -^ 

 thin envelope. Fig. 220. 



CaUochlora cliloris H-Sch. (Fig. 220) is a pale brown moth, 

 allied to Euclea, and with a broad, pea-green band crossing 

 the fore wings. 



Lithacodes {L. fasciola Boisd. Fig. 221) and Tortricodes, 

 strikingly resemble the genus Tortrix, from their narrow 

 ' wings, slender bodies, and filiform antenuse. 



The subfamily Psj-chinae, embraces some remarkably diver- 

 gent forms. The two genera, Pliryganidia and Thyrklop- 

 teryx, differing so much in the breadth of their 

 wings and thickness of their bodies, are, how- 

 ever, connected by many intermediate forms 

 '-^-^ ^ -^a^' occurring in Europe. Psyche is a hairy-bodied 

 Fig. 221. moth, wdth broad and thin wings, the female of 

 which is wingless and closely resembles the larva, and inhabits 

 a case, which is constructed of bits of its food-plant. The 

 female of Psyche helix has been known to produce young from 

 eggs not fertilized by the male. It lives in a case of grains of 

 sand arranged in the form of a snail shell, thus resembling 

 some Phryganeids in its habits, as it does structurally. 



