XXXlI 



BIRDS. 



89. Sheath-Bill 



90, Cereopsis - 



Bill stronj?, conic; iiostvils covered with a moveable cere. 

 Bill convex^, declining at the tip ; face before the eyes bare. 



82 Plover - - - 



83. Covrser . . . 



84. Oister-Catcher 



* * With Three Toes, placed forwards. 



Bill roundish, strait. 



Bill roundish, bent at the tip. 



Bill somewhat compressed, cuneated at the tip. 



ORDER VIII. WITH PINNATED FEET. 



91. Phalarope - - Bill slender, strait, a trifle bent at the tip. 



92. Fivfoot - - - Bill moderately curved, pointed, and elongated. 



93. Coot - - - - Bill conic, somewhat compressed, front bare. 



94. Grebe - - - Bill strait, sharp; legs placed far behind, tail wanting. 



ORDER IX. WEB-FOOTED. 



95. Avoset - 



96. Courier - 



97. Flamingo 



* With Long Legs. 



Bill slender, depressed, turning upwards at the end. 



Bill short, strait, smooth-edged. 



Bill bent, denticulated, inclining downward. 



98. Albatross - 



99. Atik - - - 



100. Guillemot - 



101. Diver - - 



102. Skimmer 



103. Tern- - - 



104. Gull - - - 



105. Petrel - - 



106. Goosander - 



107. Duck - - 



108. Penguin - - 



109. Pelican - - 



110. Tropic Bird 



111. Darter - - 



** With Short Legs. 



Bill bent at the end, lower mandible truncated ; back toe wanting. 

 Bill compressed, transversely sulcated on the sides ; back toe wanting. 

 Bill strait, sharp ; back toe wanting. 

 Bill strait, sharp, compressed on the sides; legs placed almost at 



the vent. 

 Bill greatly compressed, the upper mandible shorter. 

 Bill pointed, compressed at the tip. 



Bill bending at the point, near which it is gibbous beneath. 

 Bill hooked at the end, with cylindric tubular nostrils ; a spur 



instead of a hind toe. 

 Bill with a bent nail at the end, and denticulated, or sawed on the sides. 

 Bill with a nail at the end, and lamellated on the sides. 

 Bill strait, inclining downwards ; wings imitating fins, and useless 



for flight. 

 Bill naked round the base; gullet naked, and capable of greut 



distension. 

 Bill cultrated, compressed, serrated. 

 Bill subulated, serrated ; neck very long. 



