NATURAL SCIENCES OF PHILADELPHIA. 143 



188. Treron nudirostris, (Swainson). 



Vinago nudirostris, Swains. B. of W. Afr. ii. p. 205. 

 Bonap. Hist. Nat. Pigeon3, pi. 3. 



Received in all of Mr. Duchaillu's collections. From the Camma and 

 Ogobai. 



189. Columba Malherbei, Verreaux. 



Columba Malherbii, Verr. Rev. et Mag. Zool., 1851, p. 514. 

 " Columba chalcauchenia, Gray," Hartl. Orn. W. Afr., p. 194. 

 Both sexes in mature plumage from the Camma. 



190. Columba iriditorques, Cassin. 



Columba iriditorques, Cassin, Proc. Acad. Philada., 1856, p. 157. 

 Numerous specimens from the Camma. Sexes alike. 



191. Columba unicincta, nobis. 



% Head above and neck light cinereous, back and upper wing coverts dark 

 lead color, every feather edged with light bluish cinereous, giving a squamose 

 or scale-like character to those parts ; rump and upper tail coverts dark lead 

 color more obscurely edged with bluish ashy. Upper parts pale vinaceous, 

 nearly white on the throat and pale ashy on the sides and flanks, middle 

 of abdomen, tibife, and under tail coverts white. Quills ashy black, narrowly 

 edged externally with white ; tail dark lead color, nearly black, with one wide 

 transverse band of white across the middle of all the feathers. Under wing 

 coverts dark cinereous. Bill dark greenish at base ; tip of both mandibles 

 yellow ; feet black or horn color. A large, naked space around the eye red or 

 dark yellow. 



Total length about 13 inches, wing 8, tail 5 inches. 



Hab. River Ogobai, Western Africa. Discovered by Mr. P. B. Duchaillu. 



A single specimen labelled as a male of this species is in the collection from 

 the Ogobai, and I have failed to identify it with any species or description 

 which has come under my notice ; nor does it resemble any other species 

 known to me in such degree as to render it necessary to point out comparative 

 distinctions. It seems to belong to the group Palumbus, though it appears 

 to me to approach Carpopkaga more nearly than any species that I have yet 

 seen from Africa, and its general appearance is somewhat like that of the 

 plainer species of that group (C. cineracea, rosacea and others). It is entirely 

 without any white or black collar, or other markings on the neck, and the 

 present specimen has no metallic tint whatever on any part, though having 

 all the characters of an adult bird. 



Though of very plain colors, this is a large and handsome species, and I 

 regard it as one of the most interesting birds in the present collection. A 

 single specimen only is from the River Ogobai. 



192. Turtur ertthrophrts, Swainson. 



Turtur erythrophrys, Swains. B. of W. Afr. ii. p. 207, pi. 22. 

 Numerous specimens from the Camma, and formerly from the Moonda. 



193. Peristera tympanistria, (Temminck). 



Columba tympanistria, Temm. Pig., pi. 36. 

 Le Vaill. Ois. d'Afr. vii., pi. 272. 

 Specimens from the Camma, and formerly from the Muni. 



194. Peristera puella, Schlegel. 



Peristera puella, Schleg. Beydr. Dierk, i. p. 19, pi. 6. 

 Specimens of this beautiul species are from the Camma and Ogo' ">i, and 

 formerly from the Muni. The adult male is represented in the very handsome 

 figure cited above, but the sexes are not to be distinguished, except by tne 

 rather smaller size and duller colors of the female. 



1859.] 



