42 Dr. J. E. Gray on two new 



42. Psilochorema confusum, M'Lachlan. 



Psilochorema confusum, M'Lachl. Journ. Linn. Soc. ; Zool. vol. x. p. 210, 

 t. ii. figs. 10-10 b (details).* 



# Rhyacophilid.se. 



Genus Philanisus, Walker. 

 43. Philanisus plebejus, Walker. 



Philanisus plebejus, Walk. Brit. Mus. Cat. Neuropt. pt. i. p. 116. Ano- 

 malostoma alloneura, Brauer, Verh. zool.-bot. Ges. in Wien, 1865, 

 p. 422 ; id. Reise der ' Novara,' Neurop. p. 16, t. i. fig. 6 (details).* 



Hydroptilidse. 



Genus Oxyethira, Eaton. 



44. Oxyethira albiceps, M'Lachlan. 



Hydroptila albiceps, M'Lachl. Trans. Ent. Soc. Lond. ser. 3, vol. i. 

 p. 304. Oxyethira albiceps, Eaton, loc. cit. 1873, p. 145.* 



This species was accidentally omitted in my list in ' Journ. 

 Linn. Soc.,' Zool. vol. x. 



IV. — Description of two new Species of Bush-buck (Cepha- 

 lophus) from Western Africa. By Dr. J. E. Gray, F.E-.S. 

 &c. 

 In the ' Proceedings of the Zoological Society ' for 1871, 

 p. 588, I published some notes on the Cephalophi, and de- 

 scribed two new species which had been sent home from 

 Africa by M. du Chaillu as materials for stuffing out the 

 skin of the bongo (Eurycerus eurycerus). I now add the de- 

 scriptions of two others from the inside of the same skin, which 

 I did not notice at the time because I hoped to have additional 

 specimens in confirmation of their distinctness ; but second 

 consideration has induced me to believe that they are the 

 evidence of the existence of two other species in that country, 

 though M. du Chaillu said that there were no antelopes in 

 Western Africa, and confirmatory of the idea that he obtained 

 the chief of his collections from native collectors and he really 

 did not know what he had brought home. 



1. Cephalophus aureus. 



Fur on the sides of the body rather elongate and soft, of the 

 head and neck shorter and more rigid, pale bay. The crown of 

 the head and long hairs between the horns black ; spot over 

 the eye deep bay ; front part of the body and front part of the 

 fore legs darker brown, varied with blackish hairs, which are 



