THE CRESTED PARTRIDGE. 191 



With the Rouloul thus formed into a genus, M. Tem- 

 minck associated the Perdix Cambaiensis, characterized 

 by Dr. Latham as having a similar conformation of the 

 hinder toe ; and a third species was subsequently added 

 in the Tetrao ocellatus of Sir Stamford Raffles' Cata- 

 logue of the Birds of Sumatra. From the collection of 

 the same distinguished naturalist and patron of science, 

 munificently presented by him to the Zoological Society, 

 Mr. Vigors has since described two additional species, 

 making the whole number now known amount to five. 

 The paper in which this important addition was made 

 appears however to have been unknown to M. Cuvier at 

 the time when the first volume of the new edition of the 

 Regne Animal passed through the press ; for in that 

 work only one species is described as well known to 

 science, and a second is indicated in a note as " black, 

 and without crest or papillae round the eyes." This, 

 which was brought from Malacca by M. Dussumier, is 

 in all probability the Cryptonyx niger of Mr. Vigors. 



The technical characters of the genus are as follow\ 

 The bill is rather short, thickish, and somewhat com- 

 pressed, with the upper mandible deflected at the point ; 

 the nostrils are naked, placed near the base of the bill, 

 longitudinal, and partly closed by a membrane ; the 

 wings short and rounded, with the first quill-feather 

 short, the second and third gradually increasing in 

 length, and the fourth, fifth, and sixth, equal and longer 

 than the rest ; the legs moderately strong ; the hinder 

 toe in some species entirely destitute of claw, and in 

 the others furnished with a horny tubercle occupying 

 its place ; and the tail short and rounded. 



In the species now under consideration, which is 

 typical of the genus, the hinder claw being entirely 

 wanting, the male is distinguished by the violet black 

 of the sides of the head, neck, breast, and abdomen ; 

 the brown of the wing-coverts and quill-feathers of the 



