AVES. 



587 



Voiiiceps rrhdilHii Thf Crested Grebe. Plate xlv. fig. 5 De=tril.i',l, 



vol. iii. \>. 31)0. 



ORDER XV.-PALMIPEDES. 



Bills much varied in form ; legs sliort, generally placed far back ; anterior 

 toes wholly or partially connected by webs, and in some of the families the 

 whole four are united by one membrane ; the hallux articulated to the tar- 

 sus on the interior side ; some genera are devoid of a hallux. 



Gemcs l.—C^nEOPSlS.— Latham. 



Generic Character.— TiiW very short, robust, its depth at the base beinj; 

 nearly equal to its length, covered by a cere, which extends over two-thirds 

 of the upper mandible, which is arcuated, and bent over the under one, and 

 somewhat truncated ; nostrils very large, open, placed in the middle of the 

 bill; the cere extending upwards, over the forehead, nearly to the crown ; 

 tibia very short; tarsus longer than the middle toe; three anterior toes pal- 

 mated by deeply serrated membranes ; hallux short, placed high on the 

 tarsus ; claws short, strong, slightly bent ; wings furnished with an obtuse 

 spur. 



Cereopsis Nwxe Hollayidiie.— The New Holland Cereopsis. Plate xlii*. Sg. 

 7. Ash-gray ; scapulars with wedge-shaped black spots ; tail and quills 

 black; cere yellow; irides red; venter blue; bill and feet gray; legs 

 orange. Two and a half feet long. Inhabits New Holland. 



Genus 2.—CHlOiflS.—Forster. 



Generic Character.— B\\l strong, straight, hard; convex, compressed, 

 sloping towards the point; base of the upper mandible sharp at tip and 

 more than half covered by a moveable horny sheath, furrowed longitudi- 

 nally ; nostrils small, situated near the margin and partly covered by the 

 sheath ; cheeks naked, covered by a warty skin ; legs short ; tarsus not so 

 long as the middle toe ; three anterior toes having a rudimentary mem- 

 brane, the exterior andmiddleone joined the length of the first joint ; hallux 

 long, placed liigli, the nail only touching the ground ; wings of medium 

 l?ngth, the first quill longest. 



Chionis Forsteri.—S\w.ith-Bill Piate xUi*. Bg. 2. Snow-white; bill, 

 cheeks, and ophtluilmic region, yellow; legs flesh-coloured ; nails black. 

 Kighteen Inches long. Inhabits New Zealaud. 



GcHKS 3.— r.HYNCHOPS.— 7,/h«(E«s. 



Generic Character — Bill long, flattened on the sides, and truncated at the 

 apex in the form of a blade ; the edges of the upper mandible approaching, 

 and hollowed in the form of a gutter ; under mandible much longer than 

 the upper oue ; nostrils lateral, marginal, and remote from the base, and 

 situated on the lower edge of the upper mandible ; legs short; tibia partly 

 naked ; anterior toes short, united to their points by a membrane ; hallux 

 very short, articulated to the tarsus ; claws short and curved ; wings long, 

 the first quill longest ; tail short, furcated, and much shorter than the winss. 



3d 2 



