Recently published Ornitholoyical Works. 113 



32. Ridgivay on new CoHta-Rican Birds. 



[On some Costa-Rican Birds, with descriptions of several new Species. 

 By Robert Ridgway. Proc. U.S. Nat. Mus. 1883, p. 410.] 



From a small collection lately received by the U.S. National 

 Museum from Sr. Zeledon^ Mr. Ridgway describes as new 

 Enipidonax viridescetis, sp. nov.^ Psitlasoma michleri zeledoniy 

 subsp. nov., and gives notes on various other interesting 

 species. Mr. Ridgway considers that Empidonaoc atriceps of 

 Salvin is more properly congeneric with Mitrephorus au- 

 rantiiventris . 



33. Ridgway on West-Indian Birds. 



[On a Collection of Birds made by Messrs. J. E. Benedict and W. Nye, 

 of the United States Fish-Commission Steamer ' Albatross,' By Robert 

 Ridgway. Proc. U.S. Nat. Mus. 1884, p. 172.] 



The collection of birds made by the naturalists of the 

 ' Albatross ' in the West Indies, and on the shores of the 

 Caribbean Sea, altliough not extensive, is of much interest, 

 Mr. Ridgway deals with it under five heads. Ten species 

 from St. Thomas and fifteen from Trinidad were already 

 known to us from these localities. The third category re- 

 lates to the A^enezuelan island of Curacoa, almost terra in- 

 cognita to the modern naturalist. Here of six species of 

 which examples were obtained, three are described as new 

 {Mimus gilvus rostratus, Dendrceca rvfo-pileata, and Icterus 

 curasoensis) , and a fourth [Zenaida vinaceo-rnfa) is provided 

 with a suggested name in case it may not be identical with 

 Z. ruficaiida, Bp. Mr. Ridgway also inclines to the view 

 that the northern form of Icterus xanthornus (from Gua- 

 temala, Mexico, and Panama) is distinct from the southern 

 (S. American) form, which would stand as /. linncei (Bp.) . But 

 does this species or any form of it occur north of Panama? 

 We know of no evidence of such being the case. From the 

 vicinity of Sabanilla, U.S. of Colombia, specimens of eight 

 species were procured by the "^ Albatross,' all well known. 

 Lastly, on the island of Old Providence, which lies in the 

 middle of the Caribbean Sea, 250 miles north of Aspinwall, 



SER. V. — -vol.. III. I 



