192 



Dr. F. A. Dixev on 



of the pigea group,, the clasper ends posteriorly in two 

 spinous prolongations, one placed dorsally to the other 

 (fig. 1). These are usually very well marked; but in one 

 species, viz. P. spilleri, Stdgr., they are exceptionally short, 

 though still easily visible. In the 

 charina group the clasper is furnished 

 posteriorly with only one spine instead 

 of two (fig. 2). 



The members of this latter group 

 are probably best regarded as a single 

 species including several geographical 

 forms of subspecific rank. The form 

 which is most distinctly marked off 

 from the rest would seem to be 

 charina itself. This was described by 

 Boisduval from males and females 

 captured in Kaffraria. Aurivillius in 

 Seitz, he. cit., gives the distribution 

 South Africa to German 

 East Africa," but I have not seen any 

 specimens of this southern subspecies from further north than 

 the Transvaal. Another form which seems to be easily dis- 

 tinguishable is that described by Grose Smith * as Belenois 



Fig. l. — P. orbona, 

 Hiibn. Doubled spine TT' 



of clasper x 54. ot wanna 



Fig. 2. — P. charina, Boisd. Single spine of clasper x 54. 



liliana, and figured by Grose Smith and Kirby f as Pina- 

 copteryx liliana. The locality given by the describer is 

 Mombasa, and the same form is found in the surrounding 

 region at least as far to the west and north as Taveta and 



* Ann. Mag. Nat, Hist., Series 6, vol. 3, p. 122 (1889). 

 t Rhop. Exot., Pinacopteryx, PL I. figs. 7, 8 (<?), 9 (?). 



