VADE MECUM. 69 



Observation. This Butterfly lm much rarer than ICdivsa, 

 bat like that, ia chiefly found on the 8ca coast. 



COLIAS CHRYSOTHOME. 



Butterfly. Wings yellow, with the anterior margin brown, 

 in tlie male interrupted by yellow veins, in the female by 

 yellow spots ; underneath with six marginal spots. The 

 ground colour is citron yellow, in the middle reddish yellow. 



Caterpillar. 



Chrysalis. 



Observation. This insect, on the authority of Mr. Stepliens, 

 is now classed as a distinct British species, and as such will 

 be included among the Papilionid<e in his elegant " Illustra- 

 tions of British Entomology." 



Genus Piebis, pi. II, fig. 4. 



Antenna: rather long, with a tapering short obtuse knob ; 



joints more than thirty. 

 Palpi porrected beyond the head. 

 Forelegs perfect ; cubit unarmed. 

 Claws very short, bifid, with foot cushions. 

 lyings intire ; primary subtriangular ; secondary between 



wedge-shaped and ovate. 

 Egg unknown. 



Caterpillar sabfusiform, hairy, subtubcrculated. 

 Chrysalis angular, girted ; head-case beaked with an obtuse 



beak, 

 De Occr i. pi. xiv. fig. 13—19. 

 Hiibner Schmet. pi. Ixxix. c. a. b. 



PIERIS CRAT.ffiGI, BLACK-VEINED WHITE. 



Leiinn, pi. 24. Donovan, v. 13, p. 464. Duncan, pi. 9, fig. 2. 



Butterfly. M\ the wings on both sides white, with black 

 margins and ncrvures. The primary ones marked with 



