Zoological Society. 421 



the basioccipital flat, with its processes developed ; the middle incisors 

 not expanded ; the molars without supplemental lobes. 



Horns erect, compressed ; curved backwards and a little outwards, 

 or twisted ; annulated or nodulous, and furnished with one or more 

 longitudinal ridges. 



Hab. The Northern portions of the Old World. 

 C. hircus. C. Falconeri. 



C. ibex. C.jemlaica. 



I do not see sufficient reason for separating the Jemlah Goat, as 

 has been done, under the names of Hemicapra and Hemitragus. 



Ovis. 



A more or less marked, rounded, suborbital depression, but no 

 fissure ; the masseteric ridge ascending high before the orbit ; the 

 auditory bulla small ; the basioccipital flat, more or less expanded 

 anteriorly by the extension of the anterior pair of tubercles, the pos- 

 terior ones small ; the incisors nearly equal-sized, sloping ; the molars 

 without supplemental lobes. 



Horns broad at the base, transversely wrinkled, bent outwards, with 

 a more or less marked spiral curve in a direction contrary to that 

 occurring among the Antelopes, and a longitudinal ridge or angle. 



Hab. The Northern hemisphere. 



O. ammon. O. nahura. 



O. Vignei. O. tragelaphus. 



O. aries. 



It is a matter of surprise to me that naturalists should almost uni- 

 versally have given no suborbital sinus, as characteristic of the genus 

 Ovis, since it is very perceptible in the Domestic Sheep ; and in some 

 other species, especially the O. ammon, judging by the appearance of 

 the stuffed specimens, and by the fossa upon the skull, it must be of 

 very considerable size. I do not perceive it, however, in the O. trag- 

 elaphus, nor in the O. nahura. Although Mr. Gray maintains the 

 long-established error, the observations of Mr. Ogilby and Mr. Hodg- 

 son agree with my own in this respect ; the latter gentleman, who far 

 exceeds Mr. Gray in the number of generic divisions, even separates 

 O. nahura and O. barhel as a distinct genus under the name Pseudovis, 

 on account of the absence of " eye-pits." 



Ovibos. 



A small depression in front of the orbit ; no fissure ; the masse- 

 teric ridge ascending before the orbit ; the auditory bulla of moderate 

 size ; the basioccipital bone broad and flat, with a ridge and a fossa 

 on each side ; the anterior part of which is rough ; the fossa at the 

 side of the occipital condyle filled up and produced into a blunt pro- 

 cess, upon which the articulating surface is continued ; the molars 

 without supplemental lobes. 



Horns broad at the base, tapering, pressed downwards against the 

 sides of the head, and the points bent upwards. 



Hab. The North Polar Regions. 



O. moschatus. — This animal, which derives its name from its gene- 



