NATATORES ALCID.E PHALERIS. 281 



Color. Summer : Summit of the head, plumage of the back, wings and tail velvet-black ; 

 under surface of the head, throat, upper part of the breast, and thighs pitch-black. Winter, 

 as they appear on our coast : Summit of the head, back, wing-coverts, rump and tail black 

 glossed with greenish ; quills brownish black ; upper eyelid, edges of the scapulars and tips 

 of secondaries white ; chin and throat, extending nearly round on the sides of the throat, finely 

 sprinkled behind and on the sides with brown ; upper part of the breast obsoletely barred 

 with dusky. All beneath white ; the feathers black at their bases. Tarsus and toes yel- 

 lowish ; webs and feet black. 



Length, 5"0-7-5. 



This little Sea Dove, Sea Pigeon, Greenland Dove, Pigeon-diver, or Ice-bird, is but rarely 

 seen on our coast. The specimen represented in the plate was shot on Long island. It 

 ranges from 39° north to the north pole, but its more usual limits extend from Labrador 

 northwardly. It occurs on the northwest coast near the mouth of the Columbia river, and is 

 common to America and Europe. 



( EXTRA-LIMITAL. ) 



M. antiquus, Bonap. (Uriaid. Avv. B. of A. Vol 7, p. 263, pi. 470.) Bill and feet yellow; base of 

 the former white. Chin black. On each side of the neck, long narrow white feathers, meeting 

 below, and forming a crescent. Young, yellowish, spotted and barred with black. Tail broadly 

 tipped with white. Length, 10-5. 



Genus Ceratortncha, Bonaparte. Bill short, longer than high, much compressed, smooth ; the 



base not much feathered, but covered by a long obtuse bony process. First quill slightly 



longest. Tail very short, composed of fourteen rounded feathers. 



C. occidentalis, Bonap. (Uria id. Avv. Vol. 7, p. 264, pi. 471.) Brownish black; beneath whitish: 



a few slender elongated whitish feathers at the corners of the mouth and behind the eyes. Bill and 



feet yellow. Length, 15*5. Northwest Coast. 



Genus Phaleris, Temminck. Bill shorter than the head, dilated on the margins, almost quadrangular, 

 notched near the tip : lower mandible truncated at the tip. Tibia almost entirely retracted into 

 the belly. Tarsus acutely compressed. Tail short, of fourteen feathers. 



P. nodirostra, Bonap. (Aud. Vol. 7, p. 255, pi. 468.) Bill with a rounded knob over the nostrils. 

 Brownish black ; beneath white mottled with dusky. Sides and front of the head with linear- 

 elongate white feathers. Bill red: feet dull grey. Length, 6*0. Northwest coast of America. 



P. superciliosa, Bonap. (P. cristatella, Aim. lb. p. 253, pi. 467.) Dusky. A triangular horny 

 plate at the base of the upper mandible. A tuft on the forehead of about twenty recurved linear 

 feathers, 2 '5 long. A few long white feathers behind the eye. Bill orange. Length, 10-0. 

 Northxoest coast of America. 



P. psittacula. (Nuttall, Vol. 2, p. 534.) Black : belly white. A line behind the eyes, and a 

 spot above, white. Ridge of the bill compressed. Adult : bill red. Young : bill dusky yellow, 

 Length, 11-0. Northwest coast of America. 

 [Fauna — Part 2.] 36 



