4o6 P U F F I N. , Clafs II. 



vary : thofe of Priefibolme IJle are one inch and three- 

 quarters Jong; and the bafe of the upper mandible 

 one inch broad : but in the birds from the IJle of Man 

 thefe proportions are much lefs. 



The noftrils are very long and narrow ; commence 

 at the above-mentioned rim, terminate at the firft 

 groove, and run parallel with the lower edge of 



the bill. 



The irides are of a dufky color : and the edges of 

 the eyelids of a fine crimfon : on the upper eyelid is a 

 (insular callous fubftance, grey, and of a triangular 

 form : on the lower is another of an oblong form : 

 The crown of the head, whole upper part of the 

 body, tail, and covert feathers of the wings are 

 black-, but in fome the feathers of the back are 

 tinned with brown : the quil feathers are of a dufky hue. 

 The tail is compofed of fixteen feathers : the cheeks 

 are white, and fo full of feathers as to make the 

 head appear very large and almoft round : the chin of 

 the fame color •, bounded on each fide by a broad 

 bed of grey : from the corner of each eye is a frnali 

 feparation of the feathers terminating at the back of 

 the head. The neck is encircled with a broad collar 

 of black : but the whole lower part of the body as 

 far as is under water is white, which is a circum- 

 ftance in common with mod of this genus. The 

 3eo-s 3re fmall, of an orange color, and placed fo far 

 behind as to difqualify it from (landing, except quite 

 erect : refting not only on the foot, but the whole 

 length of the leg : this circumftance attends every one 

 of the genus, but not remarked by any naturalift, 



except 



