68 BIRDS. PALMIPEDES. 51. 52. 



Length 2 feet : extent 3 feet ,5 : weight near 3 pounds. 



Bill black : iris hazel : bach, quills and tail black : fcapulaYS with 

 fquare white f'pots, i^ing-coverts with round ones : breast and belly 

 white : /<J dusky, reddish within. 



238. C. *epttniiii>ua i . Above dusky-brown with white 

 lines anl specks, beneath white : neck with a chesnut- 

 re?i patch on the fore-part. 



Red-throated Diver. 7?r. Zoo/, t. 85 Z<wzn *. 231. Donovan t. 78. 



Length 2 feet 5 : extent 3 feet 9 : weight about 3 pounds. 



Bill dark horn-colour : iris hazel : head grey : neck above with 

 whitish lines, on the lower part beneath with dusky lines : quills 

 and tail dusky : sides and thighs with dusky streaks : vent dusky : 

 legs dus^y, lighter within. 



51. STERNA. Tern. 



239. St. Boysii. White, crown black : front with white 

 spots : back and wings lead-grey : quills blackish, 

 with white shafts. 



2. Body variegated : ears with a black fpot. 

 Sandwich Tern. Lewin t. 204. Donov t. 120. Walcot. t. 120. 



'Bill black: iris dusky -.front fometimes wholly black : primary 

 quills tipt with black, the inntr-webs white towards the bafe : tail 

 long, forked, the outer-feathers grey on the outer-webs : legs dusky 

 \vitha reddish tinge. 



240. St. llirundo. Bill and legs red: crown and front 

 black : tail forked, the outmost feathers black on the 

 outer webs. 



Common Tern. Br.Zool.t. 90. Lewin t. 205. Donov. t. 23. 



Length 14 inches : extent 30 : weight about 4 ounces. 



Bill tipt with black : iris hazel: lower part of the head and all 

 beneath white : bach and wings lead-grey : tail white : claws black. 



241. St. minuta.' Biil and legs yellowish-red: crown 

 black, front white : from the bill to the eyes a 

 black stripe : tail forked, the outmost feathers all 

 white. 



lessser Tern. Br.Zool. t. go. Lewin t. 206. Donovan t. 96. 



Length 8 inches and a half: extent near 20 : weight 2 ounces. 



Bill tipt with black: iris dusky: back and wings grey; lower- 

 part of the head and all beneath white : tail white. 



242. St.fasipcs. Black, back and wings grey: vent white: 

 tail slightly forked. 



Black Tern. Lewin t. 207. Donov. t. 74, Walcot. t. 122. 



Length 10 inches : extent 24 inches : weight near 3 ounces. 



Bill black : iris dusky : front and sides of the head iometimes 

 mottled with white : tail grey : legs black. 



52. LARUS. Gull. 

 A. Nostrils covered with a cere. 



243. L; Catarractes. Dark-brown, beneath ferruginous- 

 grey : quills and tail white at he babe: Uui nearly 

 even. 



Skua Gull. Lewin t. 212. Walcot /. 117. 



Length 2 feet : extent 4 feet 6 : weight 3 pounds. 



/fafblack,' much curved 'at the poi,t ; the upper mandible co- 

 vered half wuy down with a rtre : plumage a^ove with' dull ferru- 

 ginous margins : front and c bin with a grey ttn^t . legs W*ck j hind- 

 tec short. 



