VERTEBRATE REMAINS, PORT KENNEDY BONE DEPOSIT. 237 



Measurements. 



mm. 



Length of dental series, including canine; 17.5 



" of premolar series ; 6.5 



" of sectorial ; 6 



Length of ramus from symphysis to condyle ; 28 



" of basis of coronoid ; 9 



Depth, ramus at pm ¥ ; 6 



" " at m T , posterior root ; 4.5 



In this species we have a skunk of the small size of some of the weasels of 

 the genus Pu tortus. 



PELYCICTIS Cope. 

 Proc. Acad. Nat. Sci. Phil., 1S96, p. 390. 



Dental formula pm ¥ , m^. Sectorial with basin-shaped heel and without meta- 

 conid. Premolars without posterior lobe. 



This genus is only known from the mandible. The dentition agrees in num- 

 ber of teeth with both Mephitis and Putorins. From the former it differs in the 

 absence of metaconid, and from the latter in the basin-shaped heel of the sectorial 

 molar. From Gulo it differs in the presence of but three premolars. But one 

 species is known. 



Pelycictis lobulatus Cope (PI. XVIII, fig. 10), Proc. Acad. Nat. Sci. Phil., 1896, p. 390. [Type No. 06, 

 Mus. Acad. Nat. Sci. Phil.] 



Represented by an entire left mandibular ramus containing all the teeth 

 excepting the third premolar and the incisors. 



This weasel is larger than any of the existing species of 

 Putorius of North America, but equals P. vittatus of Brazil. 

 In some respects the parts preserved resemble the correspond- 

 ing ones of Mephitis orthosticluis. but the differences are also 

 conspicuous. The ramus is rather robust, and the symphysis is 

 short. The inferior border is regularly convex, and rises to the 

 angle. The latter projects as far posteriorly as the condyle. 

 Peivcictis lobulatus ^he condyle is rather elevated, its inferior border being in the 

 horizontal line of the apices of the cusps of the sectorial. The 

 coronoid process preserves its anteroposterior width to near the apex, which is 

 broadly rounded, and not contracted as in Luira species. There is a longitudinal 

 keel on the inner side of the angle, distinct from the inferior margin. 



The teeth form a continuous series, the anterior premolars not overlapping. 

 The canine is rather small ; the crown is somewhat compressed, and is not grooved 

 or faceted, but is smooth. The second premolar has the heel produced backward. 

 In the first premolar the heel is a cingulum, and is not produced. The metaconid 

 of the sectorial is represented by a convexity of the internal edge of the protocone. 

 Heel concave, with an elevated border on the internal edge only. This consists of 



