INTRODUCTION. XXXIX 



Order TUBINARES. 



Family PROCELLARIID.E. 



FuLMARUS, Stephens. — Bill not so long as the head ; the upper mandible com- 

 posed of four portions, divided by lines or indentations, the whole together 

 large and strong, curving suddenly towards the point ; the under mantlible 

 grooved along each side, bent at the end, with a prominent angle beneath ; the 

 edges of both mandibles sharp and cutting ; those of the lower mandible 

 shutting just within those above. Nostrils prominent along the upper ridge 

 of the upper mandible, but united, enclosed, and somewhat hidden within a 

 tube with a single external orifice, within which the division between the two 

 nasal openings is visible. Wings rather long, the first quill the longest in 

 the wing. Tarsi compressed, feet moderate ; three toes in front united by 

 membranes, hind toe rudimentary, with a conical claw (p. 711). 



GisTRELATA, Bonaparte. — Bill rather shorter than the head, stout, compressed, 

 straight for some distance, then ascending at the commencement of the unguis, 

 which is sharply decurved, with an acute tip ; nasal tubes moderately long, 

 elevated, conspicuous, the dorsal outline straight, the orifice subcircular. 

 Wings long and pointed, extending beyond the tail when folded ; the first 

 quill a trifle longer than the second. Tail moderately long and graduated. 

 Tarsi reticulated ; feet and front toes of moderate size ; hind toe small and 

 elevated (p. 7I3\ 



Puffin us, Brisson. — Bill rather longer than the head, slender ; mandibles com- 

 ]5ressed and decurved. Nostrils tubular, with two separate orifices. Wings 

 long and pointed, the first quill slightly the longest. Tail graduated. Tarsi 

 compressed laterally ; three toes in front, rather long, webbed throughout ; 

 hind toe rudimentary (p. 7I5)' 



BULVVERIA, Bonaparte. — Bill about as long as the head, stout at the base, com- 

 pressed, rising at the nail, which is large ; nostrils tubular, dorsal, rather 

 short. Wings long, pointed, the first quill slightly the longest. Tail long 

 and cuneate. Legs slender, the tibia bare for a short distance above the 

 joint; tarsi reticulated ; hind toe minute, elevated; feet fully webbed, the 

 inner toe shorter than the middle and outer toes, which are about equal ; claws 

 curved (p. 723). 



Cymochorea, Coues. — Pjill shorter than the head, moderately stout, com- 

 pressed, rising slightly at the nail, then decurved ; nostrils tubular, dorsal. 

 Wings long and narrow ; the first cjuill-feather shorter than the second — 

 which is the longest — and also than the third, and about equal to the 

 fourth. Tail long and deeply forked. Legs short, slender ; tarsi anteriorly 

 reticulate ; hind toe minute, front toes long and slender, webs slightly 

 emarginale (p. 725, as OceanodroMA). 



Procellaria, Linuicits. — Bill small, robust, much shorter than the head, 

 straight to the nail, which is decurved ; nostrils dorsal. Wings long, narrow ; 

 the second quill-feathcr the longest, slightly exceeding the third ; the first 

 quill shorter than the fourth. Tail of moderate length, slightly rounded. 

 Legs moderate, the tarsi anteriorly reticulate, and a little longer than the feet ; 

 webs emarginate ; claws rather short (p. 727). 



