12 NORTH AMERICAS BIRDS. 



uniformly gi'uy, the belly more uniform \s-hite, and the horn-like process at base of 

 upper man<liblc entirely absent. Young: Similar to winter adult, but while fila- 

 mentous feathers of head wanting, and bill smaller and darker in color. Downy 

 young : Uniform sooty grayish brown, very similar to corresponding stage of Lund a 

 cirrhata, but rather lighter in color and with more slender bill. Length 14.00- 

 15.50, wing 7.25, culmen, from cere, or anterior edge of horn, 1.00. Egg 2.70 X 1-82, 

 similar in form, color, etc., to those of Lumla and Bpceies of Fratercula. Hab. Coasts 

 and islands of the North Pacific, from Lowor California (resident) to Japan. 



15. C. monocerata (Pall.). EMnoceros Auklet. 



Genus PTYCHORAMPHUS Brandt. (Page 9, pi. VI., fig. 3.) 



Species. 



Above uniform slaty blackish, changing gradually into plumbeous on sides of 

 head and neck, throat, and fore-neck ; a white spot on lower eyelid ; lower parts 

 white, the sides (beneath wings) plumbeous; length 8.00-9.50, wing 4.75-5.25, cul- 

 men .75. Egg 1.83 X 1-34, ovate, pure white. Hab. Pacific coast of North America, 

 from Aleutian Islands to Lower California. 



16. P. aleuticus (Pall.). Cassin's Auklet. 



Genus CYCLORRHYNCHUS Kaup. (Page 9, pi IV., fig. 5.) 



Species. 



Above uniform blackish slate, beneath white; bill orange-red. Nuptial plu- 

 mage: Throat, fore-neck, and sides dusky; a line of narrow pointed white feathers 

 starting just below the ej-e, and extending back across the car-coverts. Winter 

 plumage : Similar to summer dress, but throat, fore-neck, and sides partly or en- 

 tirely white ; white feathers behind eyes wanting? Youjig (^?) : Similar to winter 

 a<lult, but bill duller red (or inclining to brownish), and entire lower parts, inclmling 

 throat and fore-neck, continuous white;' length 9.00-10.40, wing 5.40-6.00, culmen 

 about .60. Egg 2.12 X 1-16, clear bluish white. Ilab. Coasts of the North Pacific 

 from Sitka to the Kurile Islands.... 17. C. psittaculus (Pall.). Paroquet Auklet 



Genus SIMORHYNCHUS Merreji. (Page 9, pi. IV., figs. 2 to 4.) 



Species. 



Common Characters. — Upper parts blackish, the scapulars sometimes mixed 

 with white. Adults with a series of slender, pointed white feathers commencing 

 beneath the oyo and extending backward across the ear-coverts. Eggs ovate, pure 

 white, sometimes faintly tinged with bluish. 



a'. Wing more than 4.00; adult with a recurved frontal crest; lower parts uniform 

 sooty gray, the belly sometimes whitish ; no white on scapulars. 



' The tciuonal ami other chansos of plama;;o in this species aro not well understood, and wo have not tbo 

 material with which to determine them. The above may, therefore, bo not quite correct in some partioulars. 



