282 LEPIDOPTEEA. 



Across each segment is a row of tubercles which give rise to 

 three fascicles of hairs. The pupa is rather long, with a promi- 

 nent tubercle on the front of the head, and the abdominal tip 

 ends in four tubercles. The larva feeds on the grape dur- 

 ing midsummer and at the end of August creeps down, bury- 

 ing itself three or four inches, without making any cocoon. 

 Mr. L. Mitchell of Norwich, Connecticut, has had the kind- 

 ness to send me "a piece of wood burrowed by the E. grata 

 with one of the pupse in position." As E. unio is now known 

 to burrow in the stems of plants, our opinion that Eudryas is 

 allied to Castnia would seem to be confirmed by the habits of 

 the larvae which seem, at least occasionally, to bore into wood. 

 Eudryas unio Hiibner according to Mr. Kirkpatrick, burrows 

 in the stems of Hibiscus, thus resembling Castnia in its habits. 

 Mr. Grote establishes the genus Eiisdrrliopterus for a moth 

 closely allied to Eudryas. E. Poeyi Grote (Fig. 212, fore 

 wing ; the venation of the hind wing 

 being "almost identical with that of 

 Eudryas " ) is a brown and yellow 

 Cuban species. 



Zygcena is a European genus, and 

 Fig. 212. iiQ characters have been indicated 



in describing those of the family. The antennae are much 

 thickened towards the end, the wings are long and narrow, 

 and the species are usually entirely blue black, or green with 

 red, or white and red bands and spots. 



Acoloithus represents the Procris (P. vitis) of Europe, but 

 the wings are longer and narrower, and the hind wings are 

 very ovate. The gregarious larva of A. Americana is a little 

 over half an inch long, being short and thick. It is yellow with 

 a transverse row of black spots on each ring. Before pupating 

 it spins a dense cocoon in crevices. The moth is deep blue 

 black, with a saffron collar. Riley states that tbe " eggs are 

 deposited in clusters, and in twenty-five to thirty days from the 

 time of hatching, the worms, which then measure rather more 

 than half an inch, spin dirty white, flattened cocoons, mostly 

 in clusters on the leaf. Thi-ee days afterwards they become 

 chrysalids, also somewhat flattened, and of a shiny yellowish 

 brown ; while in ten days more the moths issue." 



