Recently published Ornithological M arks. Ill 



33. Ridgway on new Thrushes from the United States. 



[Descriptions of two new Tlirushes from the United States. By Robert 

 Ridgway. Proc. U.S. Nat. Mus. 1881, p. 374.] 



Mr. Ridgway describes Hylocichla fuscescens alicice from 

 the Rocky-Mountain region, and Hylocichla alicice bicknelli 

 from Slide Mountain, Ulster County, New York. 



34. Ridgway on two new North- American Birds. 



[On two recent Additions to the North-American Bird-fauna, by L. 

 Balding. By Robert Ridgway. Proc. U.S. Nat. Mus. 1881, p. 414.] 



Mr. Belding's researches at La Paz, Lower California, 

 have recently added two new species to the avifauna of the 

 United States — Motacilla ocularis and Dendroeca vieilloti 

 bryanti. The former is a straggler from Eastern Asia; the 

 the latter a Western-Mexican form of Z). vieilloti, which Mr. 

 Ridgway considers to be recognizable as a subspecies, con- 

 trary to the views of Salvin and Godman (Biol. Centr.-Am. 

 Aves, i. p. 125). 



35. Ridgway on new Races of American Birds. 



[Description of several new Races of American Birds. By Robert 

 Ridgway. Proc. U.S. Nat. Mus. 1882, p. 9.] 



The races described are Methriopterus curvirostris occiden- 

 talis from the coast-region of Western Mexico, Mimus gilvus 

 lawrencii from Tehuantepec, Merula fiavirostris graysoni from 

 Tres Marias islands, Sialia sialis guatemalce from Guatemala, 

 Chamaea fasciata henshawi from the interior of California, and 

 Perisoreus canadensis nigricapillns from Labrador. 



36. Ridgway on Harporhynchus and Methriopterus. 



[On the Genera Harporhynchus and Methrmpterus, Reichenbach, with 

 a Description of a new Genus of Mimiuae. By Robert Ridgway. Proc. 

 U.S. Nat. Mus. 1882, p. 43.] 



After clearly distinguishing between the genera Harpo- 

 rhynchus with 3 species) and Methriopterus (with 7 species), 

 Mr. Ridgway institutes a new genus, " Mimodes " for Har- 

 porhynchus graysoni, Baird, from the island of Socorro. 



