ADDENDA. 



The following additional species have been described as new to science 

 or to the i^Torth American fauna since the preceding images were printed, 

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



29. POLIOPTILA CAXIFORNICA Brewster. Black-tailed Gnatcatcher. Iiithe first edition 

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

 Gnatcatcher). Mr. W. Brewster, however, has recently determined that P. 

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

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

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

 Orn. Club. Apr. 1881.) 



78*. Helminthophaga cixcinxatiensis Langdon. Cincinnati Warbler. — Cf. Jour, 

 Cine. Soc. N. H. July, 1880, 111), 120, pi. iv; Bull. Nutt. Orn. Club, v. Oct. 1880, 

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

 Helminihophaga pimis and Opororma formosa, and may be a hybrid of the two, 

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



377. Melanerpes formicivorus cairdi. Californian Woodpecker. — In Hist. N.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 striatipectus proposed for the latter. Since it .appears, 

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

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

 ing without a distinctive name (jnelanopogon Temm. equalling formicivorus 

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

 civorus hairdi replaces the true M. formicivorus throughout western Mexico, 

 down to Cohma at least, the other race, angustifrons Baird, being peculiar to 

 Lower California. 



542*. EuRiNORHYNCHUS PYGMiEUS (Liun.) Pearsou. Spoon-billed Sandpiper. — Point 

 Barrow, Arctic coast of Alaska, ^"rfe Dr. T. H. Bean. 



580*. FULiCA ATRA Linn. European Coot. — A specimen in the Copenhagen Museum 

 obtained in Greenland in 1876. (Dr. J. Reinhardt, in epist. fideV. E. Freke.) 



016*. FuLiGULA RUFiNA (Pall.) Steph. Eufous-crested Duck. — Fulton Market, New 

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



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