282 LINN^US. 



72. Pelecanus, pelican, gannet, shag. Beak straight, 

 the tip hooked, unguiculate : 8 species. 



73. Plotus, darter. Beak straight, sharp pointed, den- 

 ticulate : 1 species. 



74. Phaeton. Beak cultrate, straight^ acuminate : 2 

 species. 



75. Colymhus, diver. Beak slender, straight, sharp 

 pointed : 1 1 species. 



70. Larus, gull. Beak straight, cultrate, the tip a 

 little hooked ; the lower mandible with an angular pro- 

 minence: 11 species. 



77. Sterna, tern. Beak slender, nearly straight, acute, 

 compressed : 7 species. 



78. Ryncliops, skimmer. Beak straight ; upper man- 

 dible much shorter, lower abruptly terminated: 2 spe- 



Order IV. Grall^, Waders. 



70. Phoenicopterus, flamingo. Beak incurvated as if 

 broken, denticulate ; feet webbed : 1 species. 



80. Platalea, spoonbill. Beak flattish, the tip dilated, 

 rounded, and flat : 3 species. 



81. Palamedea, screamer. Beak conical; the upper 

 mandible hooked : 2 species. 



82. Mycteria, jabiru. Beak acute ; lower mandible 

 trigonal, ascending ; upper three cornered, straight : 1 

 sj^ecies. 



83. Cancroma, boatbill. Beak bulging; the upper man- 

 dible resembhng a boat with the keel uppermost : 2 spe- 

 cies. 



84. Ardea, cranes and herons. Beak straight, acute, 

 long, a little compressed, with a furrow from the nostrils 

 to the tip : 20 species. 



85. Tantalus, ibis. Beak long, slender^ arcuate ; face 

 bare : 7 species. 



80. Scolopax, snipes, curlews. Beak long, slender, 

 obtuse ; face feathered : 18 species. 



