Barrows.] 



152 [April 4, 



the basal half of the culmen, and has the appearance of being stuck 

 on. The horny band at base of upper mandible is only slightly ele- 

 vated, but is distinctly pitted, and is broadest at the nostrils and nar- 

 rows steadily toward the culmen, where it becomes reduced to a mere 

 thread. An indication of such a ridge is seen at the base of the 

 lower mandible, but no pits are discernible. Inner claw excessively 

 curved, almost raptorial. 



General color black, clearest above, where it is glossy, and becom- 

 ing brownish on the belly. The entire face is pure white, narrowed 

 to less than one-fourth of an inch on the forehead and at base of 

 lower mandible, but on the sides extending all around and behind 

 the eye, and ending on each side in a bundle of straw colored, fila- 

 mentous feathers three to four inches in length, which originates just 

 above and behind the eye, and falls backward over the sides of the 

 neck. The only other white is a narrow line of yellowish white 

 extending along the edge of the wing from the elbow to the carpal 

 joint. Length 15-16 inches. Wing 7i-8-i-inch.es. Tail 2^-3 inches. 

 Three specimens. 



Coll. La Fresnaye, No. 8130, Society's Coll., No. 9204 ; mounted. 



No. 46492, ? ; skin; Kodiak. 



No. 54717, ?; « " 



2. Fratercula corniculata. 



Mormon corniculata Naumann, 1821. Mormon glacialis Aud. Fra- 

 tercula corniculata Gray. 



Bill extremely compressed, nearly as deep at base as long; both 

 mandibles with vertical curved grooves two or three in number, con- 

 fined to the anterior half of bill, and with their curved sides toward 

 the point. The basal ridge very prominent on the upper mandible, 

 narrowest at the commissure and widening toward the culmen, where 

 it expands into a sort of plate; the pits are well shown. Nostrils as 

 usual; in this species as in F. cirrhata and F. arctica, there are no 

 external rami proper in the under mandible, and the angle of the 

 gonys is seldom, if ever, well marked. There is a slender leathery 

 spur, three -eighths of an inch in length, on the upper eyelid, and a 

 similar, but shorter and broader one, on the lower. 



Above, black; top of head rather dark ash, the line of demarka- 

 tion between this color and that of the back very clearly defined on 

 the nape. The black of the back extends in a collar round the neck, 

 and reaches the bill on the chin, extending up to the angle of the 

 mouth, where it becomes ashy. Sides of face pure white, extending 



