926 SIR V. BROOKE ON THE [Nov. 19, 



C. rufus, and is much more gracefully shaped. C. rufinus, when 

 adult, is of a beautiful shining red, with the face and fore limbs strongly 

 shaded with bluish brown, as shown in exaggeration in Pucheran's 

 figure {vide supra) ; and C. nemorivagus is of a dull pepper-and-salt 

 brown, and never becomes red at any age. 



19. Cariacus superciliaris. 



1850. Coassus superciliaris, Gray, P. Z. S. 1850, p. 242, pi. 25. 

 Hab. Brazil (fide Gray). 



20. Cariacus whitelyi. 



1873. Coassus whitelyi, Gray, Ann. & Mag. Nat. Hist. (ser. 4) 

 xii. p. 163 ; id. Hand-list Edent. &c. 18/3, p. 162, pi. 32. fig. 2. 



Hab. Peru. Founded on a single skull of an immature animal in 

 Brit. Mus. (No. in Cat. 73. 6. 27. 2). 



It is now many years since I commenced the study of this difficult 

 group of Cervidse ; but although I have examined the specimens 

 contained in nearly all the continental museums, and made a private 

 collection of some importance, I must confess that I am still far 

 from a satisfactory understanding of the subject. The complete 

 absence of cornual and cranial characters renders it exceedingly 

 difficult to grasp the characteristic peculiarities of the different mo- 

 difications of the form, six or seven of which are, I think, probably 

 persistent, and worthy of specific recognition by naturalists. In the 

 above list I have enumerated all the species (or supposed species) of 

 which the types are extant, and must leave it to the future to decide 

 whether they are valid or not. There is still much valuable work 

 to be done amongst the Cervirlse by collectors in South America, 

 well-authenticated specimens from Rio Grande do Sul, Paraguay, 

 South Brazil and Bolivia being almost a blank in European museums. 

 The type of Coassus auritus, Gray, not having been preserved, I have 

 omitted the name from my list, as without the type it will be 

 impossible to decide with any certainty upon what species Dr. Gray's 

 name was conferred. 



8. Pudua. 



1850. Pudu (subgen.), Gray, P. Z. S. 1850, p. 242. 



Antlers minute simple spikes. Lacrymal pit oval, very deep, its 

 antero-posterior extent slightly exceeding m. 3. Ascending rami of 

 the praemaxillee reaching the nasals, which are considerably expanded 

 between the moderate anteorbital vacuities. Auditory bullae as in 

 Coassus. Molars without supplementary columns. Canines absent. 

 Central incisors slightly expanded, but exceeding those external to 

 them very much in size. Muzzle as in Cervulus, but with the 

 internarial and infrauarial portions less extensive. Neither tarsal 

 nor metatarsal tufts. Ectocuneiform, navicular, and cuboid bones 

 in tarsus united. Stature very small. 



Distribution. Chilian Andes. 



