276 
AVES. 
Carbo cormoranus. — The Cormorant. 
Plate LXV. fig. 8. 
Shoulders, scapulars, and wing-coverts, brown, with a bronzed 
green metallic lustre, and changing to bluish-black ; cheeks and 
throat mixed with brown and white; crown of the head and 
neck black; the feathers of the nape long, and elevated into a 
kind of crest; abdomen white; tail dusky brown ; bill dark 
horn-colour; irides green. Three feet long. Inhabits Europe. 
Carbo graculus. — The Shag. 
Plate LXVII. fig. 2. 
Back and wings ash-coloured, bordered with black ; head, 
throat, and neck, iridescent-black, with green reflections. Two 
feet long. Inhabits Europe. 
Genus 17.—T ACHY PETES. — Vieillot. 
Generic Character. —Bill longer than the head, strong, entire, 
with a suture close by the ridge; both mandibles bent downwards, 
greatly hooked, lower mandible compressed, upper mandible 
with a notch near its tip; nostrils basal, linear, elongated, situ¬ 
ated in the groove ; legs strong and short; tarsus half covered 
by feathers, placed far back; feet with three short anterior toes, 
connected to the first joint by a membrane ; hallux placed on 
the side, of medium length, and connected with the toes by a 
small membrane; wings very long, first and second quills the 
longest; tail long and forked. 
Tachypetes aquilus. — The Frigate Bird. 
Plate LV. fig. 8. 
Brownish-purple, iridescent, reflecting green and golden 
bronze; tail brown; shafts white; irides, bill, and throat, 
orange ; feet dusky. Three feet long. Inhabits the South Seas. 
Genus 18.— SUL A.— Brisson. 
Generic Character. —Bill much longer than the head, strong, 
very broad at the base, and tapering to the point in the form of 
a cone, compressed towards the tip, which is obliquely curved ; 
gape very wide, extending behind the eyes ; under mandible 
slightly inflated near the point; the edges of both mandibles 
serrated ; face and throat naked ; nostrils basal, linear, situated 
