ROCK-FISSTJRE CAVERN IN CRESWELL CRAGS. 685 



The extreme length of this vertebra, measured from the summit of 

 the odontoid process, is 2-35 inches, and its transverse diameter, at 

 the anterior articular facets, 1*5 inch. Both these bones are 

 rather larger than the corresponding vertebrae of the common 

 Wolf, with which I have compared them ; but otherwise they present 

 no distinctive characters. 



4. Several other vertebrae, including an entire fifth cervical, a 

 broken dorsal, &c. 



5. The greater part of the left humerus, wanting the proximal 

 end. 



6. The proximal half, or nearly so, of the right ulna, correspond- 

 ing in size. 



7. The proximal end of the left ulna, of smaller size. 



8. A large portion of the left tibia, of which the proximal epiphy- 

 sis is detached ; but notwithstanding the immaturity of the bone, 

 the shaft is fully as large as that of the common Wolf. 



9. Two left third metacarpals, one measuring 3*4 inches and the 

 other 3 inches in length. 



10. A fourth metacarpal, 2*9 inches long. 



11. Two right fourth metatarsals, one measuring 3-4, and the other 

 3*2 inches. 



12. Two fragments of ribs, including the head and angle — one 

 larger than the other. 



13. A fragment of the pelvis, showing part of the acetabulum. 



14. Various teeth, and other more or less fragmentary bones. 

 From the above it would appear that the collection includes the 



remains of at least two individual Wolves, one of larger size than 

 the other, and showing, in size and in some other respects at present 

 indecisive, characters not unlike those of C. Occident 



2. C. VTJLPES. 



The common Fox, or one corresponding with it in size, is repre- 

 sented by several bones, amongst which may be specified : — 



1. An almost complete left os innominatum with the acetabulum 

 entire, and with about half the foramen ovale remaining. The 

 acetabulum has a diameter of 0-5 inch, and the latter a longi- 

 tudinal diameter of about 0-8 inch. 



2. A small fragment of the right os innominatum, differing from 

 the preceding in colour and thickness. 



3. An almost entire humerus of an immature animal, wanting 

 the proximal epiphysis. 



4. Several canines and other teeth, &c, all in character corre- 

 sponding with those of the common Fox. 



3. C. LAOOPUS. 



The presence of the Arctic Fox depends unfortunately only upon 

 the evidence of a single, or perhaps of two specimens. 



That upon which I rely in the diagnosis is a nearly entire axis 

 vertebra. This single bone, however, which is nearly black in colour 

 (in that respect corresponding with the larger Wolf), appears to me 



