VERTEBRATE REMAINS, PORT KENNEDY BONE DEPOSIT. 263 



Two third inferior molars belonging to Nos. 2 and ? 3 have no heel posterior to 

 the third pair of tubercles, one of which is larger than the other, and forms the 

 posterior boundary. In a series of three inferior true molars whose specific refer- 

 ence is uncertain, the third tooth has a large talon posterior to the third pair of 

 tubercles, which are subequal and symmetrical. 



Mylohyus pennsylvanicus belongs to the Post-Champlain epoch of the plistocene, 

 and it will be necessary to have conclusive evidence before admitting it as one of 

 the Pre-Champlain fauna of Port Kennedy. Of course, as the latter includes the 

 existing beaver, porcupine, black bear and badger, the presence of this peccary is 

 not impossible. 



Mylohyus nasutus Leidy. Cope, American Naturalist, 1889, p. 134. 



Dicotyles nasutus Leidy, Extinct mammalia, Dakota and Nebraska, 1869, p. SSfi, PI. XXVIII, figs. 1-2. 



The only positive indication of the presence of this species in the Port Kennedy 

 deposit is a superior canine tooth, of which a considerable part of the crown is worn 

 away by use. Although this tooth was not present in the specimen which served 

 as Leidy' s type, both alveoli are perfect, and they display a form which shows that 

 the teeth the}' contained were very different in form from the corresponding ones of 

 M. pennsylvanicus and M. tetragonus. That is, they have robust crowns but little 

 compressed at the base, with the section of a wide isosceles spherical triangle. In 

 the species mentioned the section at this point is lenticular. The superior canine 

 did not accompany the type specimen of M. tetragonus, but two other individuals 

 display it, one of which is accompanied by the characteristic inferior premolar 

 teeth. These teeth are much like those of M. pennsylvanicus. 



The canine of M. nasutus is accompanied by four molar teeth, which have the 

 same mineral stain, but which, from the labels, were not found at exactly the same 

 spot. One of them is the last inferior molar. It is characterized by its elongate 

 form, and the presence of three pairs of well-developed tubercles and a heel, with 

 para- and metaconulid, and hypoconulid. If the smaller accompanying molars are 

 inferior premolars, they agree with those of M. pennsylvanicus in the presence of 

 the paraconulid. 



Measurements of c 1 . 



mm. 



tv , , c I anteroposterior ; 1 1 



Diameters at base <>i crown < , r , n 



| transverse; 9 



TELEOPTERNUS Cope. 



True molars selenodont, brachyodont, without basal lobes or columns. Last 

 inferior molars composed of two subequal columns, which are enamel lined on their 

 adjacent faces, and are separated by a valley. 



I find it impossible from the material at my disposal to determine whether this 

 type is cameloid or cervid, as it presents a combination of characters not met with 

 in either family. The entire absence of basal lobes or even a basal rilling of the 



