NATURAL SCIENCES OF PHILADELPHIA. 39 



yellow, throat and abdomen white. Quills brownish black, edged externally 

 with olive, tail dark olive, with an obscure subterminal band of brownish 

 black, and outer feathers narrowly tipped with white. Under wing coverts, 

 under tail coverts and tibice ashy white. Bill bluish black, legs light colored. 

 Total length about 4J inches, wing 2, tail If inches. 



Hah. Camnia River, Western Africa. Discovered by Mr. P. B. Duchaillu. 



This handsome and rather singular species may be easily recognized by its 

 yellow breast, which color assumes the form of a wide transverse band and 

 contrasts strongly with the white color of the throat and abdomen. One speci- 

 men only which is a male adult is in the collection from the Gamma. 



59. Camakoptera badiceps, (Fraser.) 



Sylvia badiceps, Fraser, Proc. Zool. Soc, London, 1842, p. 144. 

 The form and general characters of this bird are more those of the genus 

 Camaroptera than of Drymoica, but it is very probably the type of a distinct 

 generic or subgeneric group. It is a strongly marked species. From the Cam- 

 ma and formerly from the Moonda and Cape Lopez. 



60. Stiphrornis erythrothorax, Hartlaub. 



" Stiphrornis erythrothorax, Temm." Hartl. Cab. Jour. iii. p. 355 (1855.) 

 Three specimens only of this beautiful bird are in the collection from the 

 Gamma, and are labelled as males. The adult is described by Dr. Hartlaub 

 as above. Young % . Upper parts, including head, dull olive, cheeks ashy 

 spot in front of the eye, white. Throat and breast dull yellowish, every feath- 

 er edged with ashy black, abdomen white. 



61. Pratincola salax, Verreaux. 



Pratincola salax, J. & E. Verreaux, Rev. et Mag. Zool. 1851, p. 307. 

 From the Camma and formerly received in Mr. Duchaillu's collections from 

 Gape Lopez. 



62. Sylvietta virens, nobis. 



"Sylvietta microura, Ruppell," Cassin, Cat. B. from Cape Lopez. Proc. 

 Acad. Philada., 1856, p. 318. 



Small, tail very short, legs long, slender, feathers of the back and rump 

 long. Head above dark greenish brown, back, wings and tail olive green. 

 Line over the eye, throat and breast light rufous, abdomen white tinged 

 with yellow in the middle, flanks ashy, tibiae dark yellowish green (ashy 

 brown in young birds) under wing coverts yellow, quills light brown edged ex- 

 ternally with greenish yellow. Bill light brown, under mandible nearly white, 

 legs light colored. Total length from tip of bill to end of tail about 3 inches, 

 wing If, tail f, tarsus f inches. Sexes alike, female rather smaller. 



Hab. Camma river and Cape Lopez, Western Africa. Discovered by Mr. 

 P. B. Duchaillu. 



Having now several specimens, adult and young, and of both sexes of this 

 curious little bird, and various " Crombecs " also from Africa,* I cannot jus- 



*The two species of Sylvietta in the Acad. Mus. seem to be as follows : 



1. Sylvietta rufescens, (Vieillot.) 



Dicoeum rufescens, Vieill. Nouv. Diet, ix., p. 407 (1817.) 

 Sylvietta crombec, Lafresnaye, Rev. Zool. 1839, p. 258. 

 Le Vaill. Ois. d'Afr. iii. pi. 135. 



Specimens from various localities in Southern Africa, also from " Elephant's 

 Bay, Western Africa." The latter were collected and presented by A. A. 

 Henderson, M. D., Surgeon U. S. Navy. 



2. Sylvietta brachyura, Lafresnaye. 



Sylvietta brachyura, Lafr. Rev. Zool. 1839, p. 258. 



" Sylvietta brevicauda, De La Fresnaye." Name on plate in Lefebvre's 

 Voy. Abyssinia. 



Troglodytes microurus, Ruppell, Neue Wirbelth. Abyss. Voeg. p. 109 ? 

 Lefebvre, Voy. Abyss. Ois. pi. 6. Riipp. Neue. Wirbelth. Voeg., pi. 41, fig. 1 ? 

 Much smaller than the preceding and more uniformly colored on the under 



1859.] 



