66 BIRDS. PALMIPEDES. 47. 48. Alca. 



Black-chinned Grebe. Sow. t. 71. Br. Zool.t. yq. Lewin t. 202. 



Body 8 inches long : iris reddish-hazel ; under-mandiblc with a 

 triangular yellowish patch at the bafe : eggs white. 



ORDER VIII. PALMIPEDES. 



47. RECURVIROSTRA. Avocet. 



225. R. Avocetta. Bill and head black : above varied 

 with black and white, beneath white : legs blue. 



Scooping Avocet. Er. Zool. t. 80. Lewin t. 203. Walcot t. 66. 

 Length 10 inches, to the end of the toes 22 : weight 13 ounces, 

 Bill near 4 inches long, flexible : iris hazel : under the eyes a 

 white fpot : cheeks white : outer fcaputars, middle wing-coverts, and 

 greater quills black : edge of the wings, greater coverts, back, and 

 tail white : toes webbed more than half their length. 



48. ALCA. Auk. 



226. A. impenms. Above black, beneath white: bill 

 2-edged, grooved across : between the bill and eyes 

 an oval white spot : lesser quills tipt with white. 



Great Auk. Br. Zool. t. 81. Lewin t. 223. Walcot t. 86. 



Length 3 feet : site nearly that of a goofe. 



Bill black, much compressed and curved, the bafe of the upper- 

 mandible covered with short velvety feathers: wings very fmall : 

 legs black. 



227. A. arctica. Above and round the throat black, be- 

 neath and sides of the head white ; bill 2-edged, 

 crossed with 4 grooves: eyelids with a triangular 

 callous protuberance above : legs orange. 



Puffin. Lewin t. 226. Dcnovt. 6. Walcot. t. 87. 



Length 12 inches : extent 20 : weight 12 ounces. 



Bill short, very deep at the bafe, the half near the head bluish-grey 

 the other half red j upper-mandible furrounded at the bafe with a 

 callous dotted ridge, with 4 white furrows in the red part ; lower 

 mandible with only 3 furrows : nostrils an oblong cleft at the bot- 

 tom of the upper-mandible : eyelids \vith a triangular bluish callosity 

 above and an oblong transverse one below : chin white or grey : 

 claws black. 



228. A. Torda. Brownish-black, beneath white from the 

 middle of the throat : wings with a white band : bill 

 crossed with 4 grooves : from the bill to the eyes a 

 white line. 



^Razor-bill, Br. Zool. t. 82. Lewih t. 225. Donov. t. 64. 



Length 18 inches : extent 27 : weight 27 ounces. 



Bill much compressed, black, the middle-groove white: head, 

 chin, throat, and neck dusky-black : quill-feathers with a mixture of 

 grey on the outer webs : tail-feathers pointed : legs dusky. . 



229. R. Pica. Black, beneath white, including the sides 

 of the head, chin and throat : wings with a white 

 band : bill crossed with 3 furrows or none. 



Black-billed Auk. Walcot t. 85. Brifs. vi. t. 8./. 2. 



Lefs than the last, from which it differs in having the sides of the 

 head, chin, and throat white : mouth white within : and the furrow 

 on the bill next the bafe white. 



230. A. Allv. Black, beneath white : wings with a white 

 band ; bill convex, conic, without grooves . legs 

 greeaish-black. 



