358 Mr. E.R. Lankester on new Mammalia 
a comparison between these and the fossil Cetacea of the Ant- 
werp Crag, where specimens so much more perfect and intelli- 
gible are discovered. M. Van Beneden is at present, I believe, 
engaged in working out the generic and specific relations of the 
Cetacea of that locality. 
Ursus Arvernensis, Croiz. & Job. 
Professor Owen has already noticed the existence of a form of 
Ursus in the Red Crag, but has not assigned it to any particular 
species. The tooth figured in Pl. VIII. figs. 1 & 4 is from the 
collection of Mr. Whincopp, and was obtained, I believe, from a 
Crag-pit at Newbourn, near Woodbridge. I have very little 
doubt, after a careful comparison with a cast im the British 
Museum and De Blainville’s beautiful figures, that it is the 
Ursus Arvernensis of Croizet and Jobert which has thus left the 
canine tooth of the left side of its upper jaw in the Red Crag of 
Suffolk. The tooth is remarkable for its small size, its flatness, 
narrowness, and length, and also for a furrowed appearance 
produced by slight ridges which run longitudinally down the 
side of the crown. The anterior margin of the tooth gives indi- 
cation of a considerable amount of usage, being ground down to 
a perfectly smooth surface. 
Hyena antiqua, Lankester. 
I am happy to be able to figure another specimen of a molar 
tooth belonging to this animal, a careful examination of which has 
fully convinced me of the accuracy of my former determination 
of its specific value. It is the second premolar tooth of the left 
ramus of the lower jaw, and presents the same large antero- 
posterior measurement and shallowness in the crown which 
characterized the former specimen. Although much worn, and 
on the inner side somewhat imperfect, the tooth affords sufficient 
evidence of these facts. The cingulum also is developed to that 
very moderate extent only which was observed in the tooth from 
the upper jaw, and was one of the most marked differences be- 
tween the Hyena antiqua and the Pleistocene H. spelea. (See 
Pl. VIIT. figs. 7,8, and Ann. & Mag. Nat. Hist. January 1864, 
Pl. VIII.) 
Canis primigenius, n. sp. 
I have given this name, with a certain amount of reserve, to 
the possessor of the tooth drawn in fig. 11. It may perhaps 
hereafter be identified with more characteristic teeth, which will 
enable their discoverer to define the species better than I am at 
present able to do. 
