Comparative Anatomy of two Species of Cercocebus. 437 



Chalcites. Lesson. 

 Bill and general structure as in Cuculus. Plumage metallic 

 green ; upper mandible entire ; nostrils circular ; wings pointed, 

 the third quill longest, the second much longer than the fourth ; 

 tarsi very short, almost entirely plumed ; rump and upper tail-co- 

 vers soft. Inhabits the tropics of the old world ; parasitic. 

 Type— Cuculus auratus, Auct. Le Vail. Ois. d'Af. v. pi. 210, 211. 



Eudynamys. Horsf. and Vig. 

 Bill strong, thick, the under mandible not curved, and angulated 

 beneath; upper mandible entire; wings pointed, the fourth quill 

 longest ; tarsi much shorter than the longest toe ; the upper part 

 plumed ; rump and tail-covers soft. Inhabits the old world. 



Type — Cuculus orientalis, Auct. 



My next memoir upon this family will contain a similar exposi- 

 tion of the remaining divisions, with the specific characters of several 

 new or obscurely known species. 



IV. — Some account of the Comparative Anatomy of two species of the 

 genus Cercocebus, Geoffroy. By P. C. Eyton, Esq. 



I obtained the two monkeys from which the following notes were 

 made, from Mr Wombwell, when his menagerie was at Shrews- 

 bury, in January 1836 ; where they died while in his possession. 

 The lungs of both, as well as some of the other viscera, were much 

 diseased, the former adhering in both instances to the parietes. 



Cercocebus sab^us, Griffiths' Cuvier ; Simia sabaea, Linn. 

 Green- Monkey, Penn. 



The description of this monkey, which was a male, corresponded 

 precisely with that given in the synopsis of the Mammalia in Grif- 

 fiths' translation of the " Regne Animal," and also with that in 

 Sir William Jardine's Naturalist's Library. The measurements 

 were as follow : Length from the tip of the nose to the root of the 

 tail, 1 foot 5^ in. ; length of the tail, 1 foot 4 in. ; length of the 

 intestinal canal from the pylorus to the anus, 14 feet 4 in. ; length 

 of the rectum, 3 feet 2 in. : — length of the kidneys, 2 in., greatest 

 diameter, 1 in. : — liver five-lobed : — diameter of the small intestine 

 inflated, 1 in. ; above the ccecum, f in. ; diameter of the rectum, 

 1 in. ; below the ccecum, 1^ in. ; length of the ccecum, from the 



no. v. p f 



