VERTEBRATE REMAINS, PORT KENNEDY BONE DEPOSIT. 229 



Mustela diluviana Cope (PI. XVIII, figs. 5, 5a). [Type No. 65, Mus. Acad. Nat. Sci. Phila.] 



This species is represented by parts of three mandibular rami of the left side. 

 One lacks the symphysis, the m T , and part of the coronoid process ; the second 

 lacks the angle, condyle, and part of the coronoid, with the pm T ; the third is a 

 fragment supporting the m T and containing alveoli of pm T _ T and m T . These speci- 

 mens agree closely in characters. A left inferior sectorial tooth represents a fourth 

 individual. 



The specific characters are seen, first, in the absence of posterior median lobe on 

 the pm ¥ ; in the full development of the metaconid of the m T ; in the slight spacing 

 of the premolars and in the size. In the first and second characters it agrees with 

 M. pennantii and M. martes and differs from M. americana. In size it is almost 

 exactly intermediate between M. americana and M. pennantii. The heel of the 

 sectorial is shorter than in M. americana and M. martes, in two of the jaws, but 

 in the third the length is the same as in the latter species. The superior face of the 

 heel is flat and oblique, with the external edge sharp. The ramus generally is as 

 in the same species, the inferior outline greatly convex, and the condyle in the 

 horizontal line of the heel of the sectorial. The angle is short, not extending as 

 far posteriorly as the condyle. The masseteric fossa reaches as far as the anterior 

 border of the tubercular molar. The latter has the form seen in the other sj)ecies. 

 The mental foramina have the same positions and proportions. 



Measurements. 



mm. 



Length of molar series of no. 1 (estimated for pm T ) ; 35 



" from m ¥ to end of condyle ; 21 



Depth of ramus at pm^; 10 



" atm-g-; 12 



Length of base of coronoid; 18 



Length of sectorial; 12 



" of heel of sectorial; 3.5 



Elevation of protoconid of sectorial; 6.5 



Length, base pm T ; 7 



Elevation of crown of sectorial ; 4 



Length of molar, series of no. 2 ; 36 



" of sectorial ; 11 



rv , • i i ) anteroposterior ; 6 



Diameters, canine alveolus {, , -i v \ n 



\ transverse (oblique) ; o 



As compared with M. americana this species differs other than in its superior 

 size ; the better developed metaconid of the sectorial ; the absence of posterior lobe 

 of the pm ¥ and the larger size of the pm ¥ . In the latter point it resembles more 

 M. pennantii. The premolar teeth are slightly spaced, a character which does not 

 appear in any of the recent species of the genus. 



Gulo I 



The wolverine is represented by parts of five mandibular rami with teeth, and 

 a left superior sectorial. Four of these specimens were found close together, and it 



