ALCID.E — THE AUKS — CERORHYNCHUA. 



521 



sides smoky plumbeous ; lower parts white, usually faintly clouileJ with smoky gray, A row of 

 straight white lilamcntous feathers along each side of the occiput, originating just behind and above 

 the eye ; another row of similar liut larger feathers across the cheeks, from the rictus back. IJill 

 dull orange, the culmen, with anterior and posterior edges of the horn, black ; legs and feet pale 



ffiimmcr adult. 



yellowish brown (in skin), the webs and claws dusky ; iris hazel (W. A. Cooper, MS.). Adult, 

 in lointer (= " Ccrrohina Sucldeyi," Cas.s , " Suymatorhina Siaklciji," Coues) ; Exactly like the sum- 

 mer plumage, but breast more uniibrmly smoky gray, the alxlomen more uniform white ; horn-like 

 process of the nasal shield and mandibular process entirely absent. Young, fust 2>l 'image : Similar 

 to the adult, but white tilameutous feathers of the head entirely absent, maxillary horn wanting 



■17. 



hiu, 



Ion 



lic- 

 Ind 



Winter adult. 



or imperfectly developed, the bill smaller and of a dusky brown color. Downy young: Uniform 

 sooty grayish brown, lighter than the corresponding stage of Lundu cirrhiita, and with slenderer 

 bill, but otherwise very simihir. 



Total length, about 14.00-1. 5,50 inches ; wing, 7.2.') ; culmen, from cere or anterior e<lge of bom, 

 1.00 ; height of horn from nostril, .70 ; tarsus, I.IO-I .-20 ; middle toe, with claw, l.eO-1.00. 



The Horn-billed Giiillomot, once supposed to bo ii very rare species, has been 

 found by recent explorations to be (luite eonuuon, not only on our western coast, 

 VOL. II. — C(l 



I 



II 



