84 ME. G. BUSK ON THE ANCIENT OE 



2. As regards the dental distinctions between the Northern and Southern Lynx, we 

 have to remark (a) that in F. lynx the teeth generally are larger, though of the same 

 proportionate width, and {b) that the upper tubercular molar is very much larger, and 

 triradiate {the middle root very small). 



3. The lower carnassial is furnished with an additional small cusp behind ', which is 

 wanting, not only in F. pardina, but, so far as I am aware, in almost all other felines. 

 The only cases in which I have noticed any thing of the kind is in F. picta {Leojjardus 

 pictiis. Gray) (No. 1495a B. M.), from South Africa, and in F. viverrinus, Gray. 



4. The pm. 3 is broader or squarer behind in F. lynx, whilst it tapers almost to a 

 point in F. pardina, and the teeth generally are wider posteriorly. 



3. Felis caligata, Temminck. 



A third species of Felis, of smaller size than the Lynx, is represented by : — 



1. An entire left mandible, with all the teeth except the incisors. 



2. A fragment of a second left mandible retaining the carnassial tooth only. 



3. An entire right humerus. 



4. The distal end of the left humerus. 



5. The proximal end of apparently the corresponding ulna. 



6. The distal half of the right tibia. 



7. Two metatarsal bones. 



1. The entire mandible (PI. III. fig. 6) measures 2"' 8 from the incisor border to the 

 condyle, and about the same to the extremity of the crochet. The coronoid process 

 rises to the height of 1"'2 ; and the height of the ramus at the second tooth is 0""5. 

 The condyle is 0""6 in length, and is rather slenderer than it appears in the figure, its 

 greatest thickness being about 0"'15. The length of the three molars is 0"95, and of 

 the diasteme about 0'"26. The dimensions and proportional sizes of the teeth are 

 shown in the odontogram No. 15. 



This beautiful specimen was extracted from a very hard ferruginous matrix. The 

 bone is very dense, and almost black from manganesic infiltration, so that there can be 

 no doubt that the animal belonged to the most ancient fauna of the rock. The 

 teeth, with the exception of the carnassial (m. 1), which has lost the hinder cusp (by 

 recent fracture), are nearly entire, the small anterior and posterior cusps in pm. 3 

 and pm. 4 having been either worn or broken ofi". 



The canine, which is greatly worn behind, has a simple deep groove on the outer side ; 



the Hunterian CoUeotion, is named F. li/iix in the Catalogue, though there can be no doubt of its belonging to 

 '• the Persian Ljtix," F. caracal, and not to the true Ljtix. But in a skull of a large Caracal from the Zoolo- 

 gical Society's Collection, Jfo. 981 e, B. M., a single fissure is obscurely evident on the outer side of the caninee. 

 ' The absence of this cusp in the Canadian Lynx is refen'ed to by Messrs. Dawkins and Sanford. 



