ADDENDA. 



The following additional species have been described as new to science 

 or to the North American fauna since the preceding pages were printed, 

 and include all the accessions up to January 1, 1881 : 



29. Polioptila californica Brewster. Black-tailed Gnatcatoher. In the first edition 

 of this catalogue this species was given as P. melanura Lawr. (Black-capped 

 Gnatcatoher). Mr. W. Brewster, however, has. recently determined that J", 

 melanura Lawr. was based upon the fully adult male of P. plumbea, and is 

 therefore a synonym of that species. The Califoruian bird being unnamed, 

 Mr. Brewster proposes for it the name californica, as above. (See Bull. Nutt. 

 Orn. Club. Apr. 1881.) 



78*. Helminthophaga cincinnattensis Langdoh. Cincinnati Warbler. — Cf. Jour. 

 Cine. Soc. N. H. July, 1880, 119, 120, pi. iv; Bull. Nutt. Orn. Club, v. Oct. 1880, 

 208, pi. viii. This bird is intermediate in coloration and proportions between 

 Helminthophaga pinus and Oporornia formosa, and may be a hybrid of the two, 

 as suggested by the writer in Bull. Nutt. Orn. Club, v. Oct. 1880, 237. 



377. Melanerpes eormicivorus bairdi. Californian Woodpecker. — In Hist. 2T. Am. 

 Birds (vol. ii. p. 561), the Californian and Mexican specimens of this species 

 were separated as geographical races on account of certain well-marked dif- 

 ferences, and the name slrialipectus proposed for the latter. Since it appears, 

 however, that Swainson's name formicivorua was based upon specimens from 

 southern Mexico, atriabipectua becomes a synonym. The Californian form be- 

 ing without a distinctive name (melanopogon Temm. equalling formicivorua 

 Swanis. ), I take great pleasure in dedicating it to Professor Baird. M. formi- 

 civorua bairdi replaces the true M. formicivorua throughout western Mexico, 

 down to Colima at least, the other race, anguatifrona Baird, being peculiar to 

 Lower California. 



542*. Eurinorhynchus PYGMiEUS (Linn. ) Pearson. Spoon-billed Sandpiper. — Point 

 Barrow, Arctic coast of Alaska, fide Dr. T. H. Bean. 



580*- Fulica atra Linn. European Coot. — A specimen in the Copenhagen Museum 

 obtained in Greenland in 1876. (Dr. J. Keiuhardt, inepiatfide P. E. Preke.) 



616*. Fuligula rufina (Pall.) Steph. Rufous-crested Duck. — Fulton Market, New 

 York, Feb. 1872; G. A. Boardman. Specimen in U. S. National Museum. 



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