12. EHTXCHOP.-(. 



157 



sign of white on the parapteral feathera ; tail-feathers dark umber- 

 brown on the upper surface, with very narrow whitish edges, the 

 undersides brown ; under wing-coverts smoke-brown. TotaL lengtli 

 lU'o to 2U-5 inches, culmen 4, genys 4'!), wing 10-5-17, tail 5'5-G, 

 tarsus 1-4, middle toe and cLiw l-'A. 



Adult female. Similar, but smaller, in the same proportions as in 

 the former species. 



Itnmature. Like the above, but with an irregular collar mottled 

 with dull white, a mottled dark brown crowu and najie; some 

 brownish streaks on the cheeks and forehead. ' 



Young. Forehead and cheeks dirty white, profusely streaked with 

 brown ; crown, nape, and upper surface dull umber-brown ; the 

 feathers of the mantle, wings, and tail bordered and tipped with 

 buff and greyish white. 



Hah. The large rivers of the northern part of South America, 

 from their estuaries upwards, for thousauds of miles — viz., the 

 Magdalena and others, which empty into the Caribbean Sea, the 

 Orinoco and tributaries, the (juiaua rivers, the Amazons and tribu- 

 taries, up to the Huallaga and the foot of the Andes. Obtained on 

 Lake Titicaca in the High Andes. C'o;i8t of Chile from the Magellan 

 Straits upwards; Peruvian coast ; Guayaquil River up to Babahovo. 

 Once at Cozumel. off Yucatan. 



The specimen in the Salvin-Godman Coll. from Cozumel has 

 distinctly smoke-coloured under wing-coverts, and shows no trace 

 of white on the parapteral feathers ; the rectrices are chiefly dark, 

 but the white on their edges is rather wider than in typical R. mela- 

 nuro, and so is the whitish band on the wing. The fact that 

 the North American R. nigra visits Cozumel is not without 

 significance. 



a. Imm. sk. Cozumel I., Yucatan, Feb. Salvin-(Todman Coll. 



{G. F. Gaumer). 



b. Imm. sk. Venezuela. D. Dyson, Esq. [P.]. 



c. Ad. st. British Guiana. Sir R. Schomburo-k 



[C.]. 



d. Ad.sk. British Guiana (//. li hifeli/). H. Saunders Coll. 



e. 2 i^^'- ^^- River Rupuruni, Feb. {H. Jr.). Salvin-Godman Coll. 

 /. (S ad. sk. Oururnei, Dec. (//. IF.). Salvin-Godmau Coll. 

 ff. Imm. sk. Surinam {Dr. Ktrke). PI. Sauuders Coll. 



h. $ ad.sk. Mexiana, Lower Amazons, Dec. Salvin-Godman Cull. 



(A. R. Wallace). 



i. J ad.sk. Lower Ucayali, Peruvian Ama- E. Bartlett [C.]. 



zons. 



k. 2 ad. sk. Upper Ucayali, Peruvian Ama- H. Saunders Coll. 



zons, May (E. Bartlett). 



I. (5juv.sk. Yurimaguas, Huallaga R., Peru- II. Saunders Coll. 



vian Amazons, Xov. (E. £.). 



m. Innn. sli. Straits of Magellan. The Admiralty [P.]. 



72. Imm.sk. Chilo {H. M.S. ' Blonde'). Capt. Lord Byron, 



R.N. rp.]. 



o, /). Imm.sk. Chile. C. Crawlev, Esq. [P.] 



q. Ad. sk. Cliile {E. C. Reed). H. Saunders Coll. 



