( cxvii ) 



so than in Euterpe. The apex is usually rather sharp, especi- 

 ally so in L. eleone, L. tovaria, L. semicaesia, L. tenuicornis 

 and L. caesia. The sides as a rule are nearly parallel ; there 

 is slight lateral compression in L. eleone ; in L. aripa and 

 L. tovaria the sides converge slightly towards the apex ; in 

 L. tenuicornis they diverge slightly towards the base. The 

 fimbriae are fairly long, in L. j^enthica they appear to be 

 unusually broad. The base is well rounded in L. erinna, 

 L. eleone, L. semicaesia and L. ciuerea ; it is slightly cornviated 

 in L. tovaria, L. penthica and L. tenidcornis. The lamina of 

 L. caesia is somewhat exceptional in the genus, a little recall- 

 ing some of those in Catasticta. It is triangular, the sides 

 converging towards the apex, which is acute. The base is 

 prolonged into distinct cornua, which may be sharp and 

 almost claAv-shaped. The disc, however, is thoroughly char- 

 acteristic of Leptophobia, bearing no resemblance to that of 

 the former genus. 



The group of neotropical butterflies to which Dr. Butler 

 restricts the generic name Pieris, and which is known to some 

 other authors as Ferrhyh-is, falls apart, so far as its scent- 

 scales are concerned, into two very distinct sections. The first 

 of these consists of species allied to Pieris calydonia, such 

 as P. viardi, P. locusta and P. pylotis. The second comprises 

 what may be called the P. huniae group, including P. plialoe 

 and P. sevata, as well as one or two forms at present unnamed. 

 In the former division the plume-scales are not unlike those 

 of Leptophobia, being moderate in size, with sides more or less 

 parallel. They can, however, be at once distinguished from 

 those of Leptophobia by the appeai-ance of the disc, which 

 instead of being represented merely by a slight proximal swell- 

 ing of the footstalk, is a definite sti-ucture generally oval or 

 circular in outline, and attaining in P. pylotis considerable 

 relative dimensions. The sides of the lamina converge 

 slightly towards the apex in Pieris locusta and P. apicalis ; 

 in Pieris tithoreides, P. calydonia and P. deniophile they show 

 a slight distal divergence. The base is rounded in P. viardi, 

 P. deino'pliile and P. ccdydonia, squared or angulated in 

 P. tithoreides, P. mandela, P. mar ana and P. pjylotis ; P. 

 locusta and P. ajncalis possess rudimentary basal cornua. In 



