•270 
AVES. 
Procettaria pelagica. — The Stormy Petrel. 
Plate LXIV. fig. 2. 
Head, back, wings, and tail, black; under parts dingy black ; 
rump with a transverse white band; scapulars and secondaries 
tipped with white; irides brown ; bill and legs black. Five 
and a half inches long. Inhabits Europe and America. 
Genus 8. — PACHYPTILA.— Illiger. 
Generic Character .—Bill thick, robust, greatly depressed, 
very broad ; upper mandible inflated on the sides ; interior mar¬ 
gins furnished with cartilaginous plates ; ridge distinctly formed, 
compressed, and hooked at its termination ; nostrils basal, hav¬ 
ing two orifices, situated in a short tube; three anterior toes, 
adhering by deeply divided membranes ; hallux represented by 
a short claw. 
Pachyptila Vittata — Forster’s Pachyptila. 
Ash-gray above, white in the under parts ; quills, tail-feathers 
at the tip, and band on the wings when expanded, brownish- 
black. Twelve inches long. Inhabits the Southern Hemisphere. 
Genus 9.—HALADROMA.— Illiger. 
Generic Character. —Bill short, straight, compressed, sharp 
at the edges, and furrowed longitudinally, hooked at the tip ; 
lower mandible furnished with a small pouch, capable of exten¬ 
sion ; nostrils distinct, their base concealed under a tube; legs 
short; with three anterior toes only, which are palmated; wings 
short. 
Haladroma XJrinatrix. —The Diving Haladroma. 
Blackish-brown above •, chin black; and white on the under 
parts. Eight and a quarter inches long. Inhabits New Zea¬ 
land. 
Genus 10.—DIOMEDE A.— Linnaeus. 
Generic Character —Bill long, straight, robust, thick, sutured, 
laterally compressed, abruptly curved at its point; upper man¬ 
dible channelled on the side, and much bent at the point; lower 
mandible truncated; nostrils situated in the groove, tubular, 
lateral, remote from the base, covered behind by a membrane, 
