50 PROCEEDINGS OF THE ACADEMY OP 



To this beautiful species, I have great pleasure iu applying the name of Mr. 

 Uuchaillu, who, in the three )'ears past, during which he has been in Africa, 

 has fairly earned the distinction of being the most successful zoological tra- 

 veller of the present time, and who has, in ornithology especially, made very 

 important discoveries. 



100. Trochocercus nitens, nobis. 



Of the same generic group as Musdcapa cyanomelas, Vieill. Le Vaill. Ois. 

 d'Afr. iv. pi. 151, and in some measure resembling that species. Crested, bill 

 smaller and more narrow than in typical species of Muscipeta, wing moderate, 

 fifth quill longest, tail moderate, bristles at the base of both mandibles strong, 

 and nearly as long as the bill. 



6 Head, breast, and entire upper parts glossy bluish black, which is also 

 the color of the wings and tail. Abdomen and under tail coverts light cinere- 

 ous, very pale or nearly white next to the black color on the breast, under wing 

 coverts white, bill and feet bluish gray. 



5 . Top of head (or crest) only glossy black as in the male, back and other 

 upper parts dark cinereous, (without lustre,) wings and tail ashy black. Entire 

 under parts light cinereous, darker on the throat and breast, and very pale on 

 the abdomen, under wing coverts light ashy, nearly white. Total length, % , 

 about 5| inches, wing 2i, tail 2| inches. % slightly smaller. 



Hab. Camma river, Western Africa. Discovered by Mr. P. B. Duchaillu. 



This is a second species of the same group to which belongs Muscicapa cyano- 

 melas, Le Vaill Ois. d'Afr. iv. pi. 151, as stated above, but is a very distinct 

 and well marked species, entirely without the white scapulars and tertiaries 

 which so strongly mark that bird, and are well represented in Le Yaillant's 

 plate cited above. In the male, the head and breast and entire upper parts of 

 the body, including the wing coverts and shorter quills, are lustrous bluish 

 black, changing to greenish according to the light. The abdomen is clear 

 ashy, very pale next to the black of the breast, and there almost assuming the 

 form of a transverse narrow band of ashy white. 



Several specimens of both sexes of this interesting little bird are in the col- 

 lection from the Camma and Rembo rivers. 



101. Trochocercus ? 



Several specimens of young birds in the collection from the Camma seem 

 to indicate a third species of this group larger than either T. cyanomelas or T. 

 nitens. Young of both sexes resemble the females of both the species just 

 mentioned, but are of darker cinereous, and like them have the crest only 

 black. The bill is larger and more depressed. I do not regard it as expedient 

 to propose a new specific designation in this difficult family, without having 

 adult specimens. 



102. Bias musicus, (Vieillot.) 



Platyrhynchus musicus, Vieill. Nouv. Diet, xxvii. p. 15. 

 Myiagra flavipes, Swains. Flyc. Nat. Lib. p. 255, 308. 

 Specimens from the Camma and formerly from the Moonda. Young % . Like 

 the female, but with the entire plumage mixed with black feathers. 



103. Artomyias fuliginosa, Verreaux. 



Artomyias fuliginosa, J. & E. Verreaux, Cab. Jour. 1855, p. 104, (March.) 

 Butalis infuscatus, Cassin, Proc. Acad. Philada. 1855, p. 326, (April.) 

 From the Camma and formerly from the Moonda and Cape Lopez. 



104. Platystira melanoptera, (Gmelin.) 



Muscicapa melanoptera, Gm. Syst. Nat. i. p. 939, (1788.) 

 Jard. and Selb. 111. Orn. i. pi. 9. 

 Numerous specimens in all of Mr. Duchaillu's collections. 



105. Platystira leucopygialis, Fraser. 



Platystira leucopygialis, Fras. Proc. Zool. Soc. London, 1842, p. 142. 



Platystira castanea, Fras. ut sup. p. 141 

 Frazer Zool. Typ. Birds, pi. 34. 

 From the Camma and Ogobai. 



[Jan. 



