THE STUDY OF INSECTS. 



resemblance to that of Alypia, but may be distinguished by 

 having only six transverse black lines on each segment. It 

 has the same food-plants as the species described above. It 

 transforms in a cell in the ground or in soft wood. 



The Pearl Wood-nymph, Euthisanotia unto (E. u'ni-o). 

 This moth closely resembles the species just described, but 

 is smaller, expanding a little less than one and one half 

 inches. The outer border of the front wings is paler and 

 mottled ; and the band on the hind wings extends from the 

 inner angle to the apex. The larva resembles that of E. 

 grata ; it feeds upon the leaves of Euphorbia coloratum, and 

 perhaps on grape also. 



Family PERICOPID^E (Per-i-cop'i-dae). 



The Pericopids (Pe-ric' o-pids}. 



These beautiful insects occur within the limits of our 

 country only in the far West and in the Gulf States. They 



resemble the 



,J%^\L Wood -y m P h 



Moths in their 

 strongly contrast- 

 ing colors; but 

 can be distin- 

 guished from 

 them by the po- 

 sition of the ori- 

 gin of vein V, of 

 the hind wings, 

 which appears to 

 be a branch of 

 cubitus (Fig. 384). 

 Our most com- 

 mon species be- 

 long to the genus 

 Gnophala (Gno- 



F,G. 384 -Wings of Gnophvla hopfferi. phse'la). TllCSC 



black with conspicuous yellow spots. G. vermiculata 



are 



