398 



NOTES ON THE CANID.E OF THE WHITE RIVER OLIGOCENE. 



The phalanges of the pes do not differ from those of the fore foot, except in their 

 considerably greater size. 



Measurements. 



Tarsus, height (excl. calcaneum). 



Calcaneuru, length 



' ' length of tuber 



" dorso-plant. diam 



Astragalus, length 



" width of trochlea 



length of neck 



width of head 



Navicular, height 



width 



Ectocuneif ortn, height 



width dist. end ... 



Metatarsal i, width prox. end 



" ii, " " " 



iii, " " " .... 



iii, width dist. end... 

 iv, width prox. end. 



No. 10493. 



No. 11012. 



.021 





.0195 



.020 



.012 



.012 



.007 



.008 



.013 



.013 



.005 



.0055 



.006 



.006 



.007 



.007 



.003 





.006 





.0045 





.0045 





.0045 





.003 



.003 



.005 



.005 





.005 



.0035 





No. 11381. 



.014 

 .006 

 .006 



.008 



IX. Restoration. 



The general appearance of the Cynodictis skeleton has little about it to suggest 

 canine affinities, but has sonic resemblance to the civets and especially to the herpestine 

 section of that family. This resemblance is not merely a general one of outline and pro- 

 portions, but may also be traced in many of the details of structure. The small head, 

 with its elongate and narrow cranium and short, tapering muzzle, is of strikingly viver- 

 rine character. So is also the neck, which is relatively long and stout, the vertebrae hav- 

 ing heavy centra and well-developed processes. The resemblance to the civets continues 

 into the thoracic region, where the vertebra? are small, especially in the anterior portion, 

 and have short, slender neural spines. The thorax itself, with its slender and moderately 

 curved ribs, is narrow and compressed, as in the Carnivora generally, while the prominent 

 and compressed manubrium has a somewhat viverrine appearance. The lumbar region is 

 long and is strongly curved upward; the vertebras are much elongated, with stout 

 depressed centra, very long, slender and anteriorly directed neural spines, which are not 

 like those of modern dogs or civets and most resemble the spines of Lynx. The trans- 

 verse processes are likewise peculiar in their length and slenderness. The tail is unlike 



