3 



ter of the carnassial tooth reminds me of bears. The species resembles 

 the black bear in the size of the mature molars. 



, Stirarus obtusilobus. Gen. et sp. nov. 



Represented by a portion of a mandibular ramus which supported the 

 three anterior premolars. The form of the last indicates that it im 

 mediately preceded the sectorial, so that the series numbered one less 

 than in Canis, to which the genus appears to be allied. The teeth are 

 elongated and compressed with low crowns and flattened roots ; the 

 crown of the third is four-lobed. 



Char, specif. Thin premolar with large anterior lobe and posterior 

 heel. Median lobes obtuse ; three last lobes connected by a low edge.' 

 Enamel slightly rugose. 



Measurements. 



M. 



Length bases of three premolars 016 



" " third " 008 



Elevated crown " • ' 004 



Depth ramus at " " 007 



Canis gregarius, sp. nov. 

 Abundant in the Oreodon beds of the Miocene formation, and about 

 the size of the red fox. First premolar one-rooted, second molar two- 

 rooted and with two transverse tubercles. Fourth premolar with median 

 and basal lobes, forming a cutting edge in line. Sectorial with stout 

 inner tubercle and short heel. 



M. 



Length molar series. 036 



" premolar " 019 



1 ' fourth premolar 006 



" sectorial 009 



Width " 004 



Height " 006 



Depth ramus at sectorial 010 



A second and larger species occurs with the preceding. 



Isacus caniculus. Gen. et sp. nov. 

 Established on a mandibular ramus with two molars including the 

 sectorial, which is illustrated by a similar specimen with two posterior 

 molars. The genus has three tubercular molars, of which the two 

 anterior are composed of two elevated cross-crests, which form partial 

 Vs, opening to the inner side. The sectorial supports three anterior 

 conic tubercles, the inner and outer equal, and a heel with a conic tuber- 

 cle on the outer side. 



CJiar. specif. Tubercular teeth with anterior limbs of Vs much shorter 

 than posterior, the posterior connecting the longer limbs. A cingulum 

 in front only. Lobes of sectorial acute, anterior and posterior lower, 

 sub-equal. 



