HYPOTHETICAL LIST. 35 I 



A very distinct species, of which only one specimen has been ob- 

 tained, the alleged locality being the "northwest coast of America." 



Family PHALACROOORACID-ffl. 

 7. Fhalacrocoraz perspicillatus Pall. 



Pallas's Cormorant. 



Phalacrpcorax perspicillatus Pall. Zoog. Rosso- As. H. 1S26, 305. 



[B 621, C 533, R 648,0 756.] 



Believed, on good evidence, to be now extinct, as it unquestionably 

 is in the locality (Bering Island) where originally discovered. Only 

 three specimens are known to exist in collections, — one each being 

 in the St Petersburgh, Leyden, and British Museums. Even if exist- 

 ing, it has no valid claim to a place in the North American fauna. 

 (C/. Stejn. Pr. U. S. Nat. Mus. VI. 1883, p. 65.) 



Family ANATID-ffl. 

 /,/t - 8. Chen cserulescens (Linn.). 



Blue Goose. 



Anas ccerulescens Linn. S. N. ed. 10, L 1758, 224. 



Chen cceruUscens Ridgw. Pr. U. S. Nat. Mus. IIL Aug. 24, 1880, 202. 



[B 564, C 479, R 590, C 694.] 



Possibly a race of C. hyperboreiis (Pall.). (Cy! B. B. & R. Water 

 B. N. Am. I. 1884, 437 ; Ridgw. Auk, I. 1884, 240.) 



Family ARDEID-S. 

 9. Ardea wuerdemanni Baird. 



Wurdemann's Heron. 



Ardea iviirdcfnanni Baird, B. N. Am. 1858, 669. 



[B 488, C 450, R ^Z6,part, C 6$6,part.'] 



!|i- 



