226 BuUedn Atnerican Museum of Natural History [Vol. XLIII 



define this pale area as a fine marginal band. The anal lobe is black at the end; the 

 two tails, one at the end of vein 1, which is twice as long as the one at the end of vein 

 2, are very slender, and appear under the microscope to be dark red, heavily dusted 

 with black scales. On the under side the ground-color of both wings is very deep 

 orange-red or vermilion. The fore wings on their posterior margin are pale fuscous 

 from the base, as far iipward as the first submedian nervule and as far outward as a 

 point about two millimeters from the lower angle, where this dark shade vanishes 

 and is replaced Vjy pale yellow. There is a small sharply defined black spot in the cell 

 of the fore wing at its base, followed about the middle by two similar spots, one 

 above the other, and succeeded immediately at the end of the cell by three such spots 

 fused together to form a moniliform dark bar closing the cell. The hind wings on 

 this side are devoid of dark markings, except on the inner margin a little above the 

 anal lobe, where there is an elongated subtriangular spot of small size, which is deep 

 black, ornamented in the middle by a narrow streak of silvery white scales. The anal 

 lobe is black ornamented with a few metallic scales. On this, as on the upper side of 

 the wings, the cilia are dark brown and define the wings outwardly as a narrow 

 marginal line. Expanse, 28 mm. 



There are two males, both captured at Niangara in November 

 1910. One, the type, i.s in The American Museum of Natural History; 

 the other, the para type, is in the Holland Collection in the Carnegie 

 Museum. I take pleasure in naming the species in honor of one of the 

 leaders of the expedition. 



AxiocERSEs Hiibner 

 (353) 1. Axiocerses harpax (Fabricius) 



Papilio harpax Fabricius, 1775, Syst. Ent., App., p. 829, 9 . 



Chrysophanus pcrion Hopffer, 1862, Peters, Reise n. Mossambique, Ins., p. 403, PI. 



XXVI, figs. 1-3. 

 Axiocerses harpax Aurivillius, 1898, Rhop. ^thiop., p. 335. 



There are three males taken at Medje which are clearly referable 

 to this species. One was captured in June, the other two in July. 



I confess with Dr. Aurivillius my inability to distinguish clearly 

 specimens of so-called A. per ion (Cramer) which we now and then re- 

 ceive from correspondents in South and Eastern Africa from A. harpax 

 (Fabricius). Except that they are darker on the under side, so far as ni}^ 

 specimens show, there is no difference which should cause them to be 

 regarded as a distinct species. They seem to me at best to be a mere 

 local race. However, the whole genus is in need of revision, as a number 

 of species have recently been described. 



