290 LEPIDOPTEI:A. 



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

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

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



fleshy lateral appendages. It feeds on the 

 plum,, cherry and apple. 



In Lunacodes 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 sharply 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 with 

 brown, and pale beneath, while the sides 

 of the body are raised, the dorsal surface 

 being flattened. It constructs a dense, oval, 

 spherical cocoon, surrounded by an outer 

 thin envelope. 



Calloclilora chloris 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. fasdola Boisd. Fig. 221) and Tortricodes, 

 strikingly resemble the genus Tortrix, from their narrow 

 wings, slender bodies, and filiform antennae. 



The subfamily Psychinae, embraces some remarkably diver- 

 gent forms. The two genera, Phryganidia and Tltyridop- 

 ^ teryx, differing so much in the breadth of their 



^'f- . VV -';' "T wings :ni(| thickness <>i' their bodies, are, how- 

 "? 8^ ever, connected by many intermediate forms 

 occurring in Europe. Psyche is a haiiy-bodied 

 Fig. 2-21. moth, with 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 heli.v 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. 



