the charina Group of Pinacopteryx. 193 



Machakos. Pinacopteryx gerda, figured and described by 

 Grose Smith and Kirby (loc. cit., figs. 10, 11), also from 

 Mombasa, is probably a male of P. liliana somewhat smaller 

 than the average and less heavily marked with black. 

 Specimens from the Voi River, the Tana River and Mlegwa, 

 all in British East Africa, correspond in appearance with 

 Pinacopteryx gerda. 



There remain certain forms, allied to the foregoing and 

 to each other, which have been known under the names of 

 P. doxo, Godt., P. simana, Hopff., and P. venata, Butl. 

 P. doxo was the first member to be noticed of the whole 

 charina group. It was described by Godart * in 1819 as 

 Pieris doxo. Godart's type is in the Dufresne Collection, 

 now at Edinburgh, and has been figured by Mr. P. Grimshaw 

 in Trans. Roy. Soc. Edin., vol. xxxix, PI. I, fig. 6 (1900). 

 It is a female in somewhat poor condition. The locality 

 is left blank by Godart; but Boisduval.f who reproduces 

 Godart's description, says, " Afrique probablement." A 

 careful examination of the type specimen makes it tolerably 

 clear that it is a Pinacopteryx of the group at present 

 under discussion, though it is by no means easy to assign 

 it to its proper place among the forms included in that 

 section. On the whole I should be disposed to agree with 

 Aurivillius (loc. tit., p. 46) that it belongs to the form 

 afterwards described by Hopffer as Pieris simana (types 

 from Mozambique), were it not improbable that any of 

 Dufresne's collection came from that region. As the case 

 stands, I suspect that Godart's type may be really a some- 

 what unusual example of the wet-season form of P. charina 

 from the region of the Cape. It is, however, not exactly 

 like any Pinacopteryx that I have ever seen, and it differs 

 considerably from the figure of " doxo $ " in Seitz, op. tit.. 

 PI. XIV, e. This figure, indeed, probably represents a 

 dry-season female of Grose Smith's liliana, and was certainly 

 not drawn from Godart's type. 



The type of P. doxo thus being a battered female of 

 unknown locality, its determination is so uncertain a 

 matter that I venture to think it best to drop the name 

 altogether as a specific or subspecific designation. The 

 next question to arise is that of the relation of P. simana 

 to P. venata. Butler's type of P. venata, a female, came 

 from the White Nile ; it was described and figured by him 



* Enc. Meth., ix, p. 123, n. 15. 

 f Sp. Gen., I, p. 527, n. 130 (1836). 

 TRANS. ENT. SOC. LOND. 1918. — PARTS I, II. (DEC.) O 



