228 ^ ANOtJS. 



Crown always white. 



252. Sterna melanauchen. The Black-naped Ocean-Tern. 



i 12" to 13 J". Legs black. Bill black, red tip. Head white, nape, orbits, 

 and ear-coverts black. Eye-line widening to nape black. Mantle pale grey. 

 Wing almost white. First quill dark grey on outer web ; shafts of all primaries 

 white. Outer rectrices white. Chiefly insular throughout tropical parts of Indian 

 Ocean, the Malay Archipelago, and N. Australia, the Loochoo, Friendly, and 

 Navigator groups. Two eggs (1-56 x 1-12), yellowish and double-spotted. 

 (J. 991. B. 1512.) 



Also S. trudeau. 14". Legs dull orange. Bill yellow, banded black. Crown and nape 

 white, merely a blackisli streak through the eye. Above and below grey. Chin and rump 

 white. S. America. 



Crown and lores black. 



253. Sterna ansestheta. The Brown-winged Ocban-Tern. 



ij 14". Legs black. Bill dusky red. Crown and lores black. Front of fore- 

 head, eye-stripe, and nape white. Quills blackish. Eump and mantle umber- 

 brown. Tail grey-brown, outer rectrices white ' on outer webs. Tropical and 

 subtropical seas. One or two eggs (1-72 x 1-2), white, finely spotted. (J. 992. 

 B. 1513.) 



254. Sterna fuliginosa. The Sooty Ocean -Tern. 



(? 17|". ? 16". Legs purplish. Bill purplish. Lores black. Middle claw 

 much curved. Forehead, chin, neck below, axillaries, wing-lining, and lower tail- 

 coverts white. Nape velvet-black. Mantle deep black. Tail sooty, outer feathers 

 dull white, with grey on inner web. Tropical and subtropical seas. Eggs (1-94 x 

 1-34) whitish, spotted red-brown. (B. 1514.) 



Also S. lunata. 15". Legs reddish black. Bill black. Crown, nape, and loral stripe 

 black. Centre of forehead and eye-streak white. Mantle and tail-coverts dark slate-grey. 

 Primaries with brown shafts. Below white. Low Archipelago and Pacific isles. 



S. aleutica. 13|". Legs and bill black. Mantle slate-grey. Kump and tail white. Breast 

 and abdomen slate-grey. Shafts of primaries white. Alaska to S.E. Japan. 



Also the genus Nosnia. With conspicuously prolonged plumes at the gape. Tail slightly 

 forked, with the two outer rectrices equal. One species — N. inca, 16". Legs red. Bill 

 crimson. Forehead and crown dark slate. A white moustache prolonged to the auricles and 

 thence detached in curling feathers about 2" long. Mantle and tail slate, outer rectrices brown. 

 Coasts of Peru and Chili. 



(iii.) Outer tail-feather shorter than the next one (255-257). 



Genus ANOUS. 



AnSiis^&vooi (trisyllable), without understanding (vios, koOs), foolish. 



Bill, tip decurved. Nostrils in groove, further from base of bill than in 

 Sterna. Tail cuneate. Fourth feather from outside longest (third in Micranous). 

 Feet large. Toes fully webbed. Plumage dark. Tropical oceanic birds allied to 

 Terns, but with a slower and heavier flight and very different habits. Live in 

 the open sea and settle on the water to feed. Tropical and subtropical seas. 

 The only Tern's eggs laid in a nest. 



