20 Annals of the Carnegie Museum. 



Order FER.-E {CARNIVORA) Linnsus. 



Family OXYCL^NID^E Scott. 



Protochriacus Scott. 



(Proc. Acad. Nat. Sci. Phila., Nov. 15, 1892, p. 296.). 

 (Plate II, p'igure 15.) 



There is a specimen (No. 1928), evidently a first upper molar, 

 which I cannot distinguish from Matthew's figure^ of the correspond- 

 ing tooth of Protochriacus hyattiamis (Cope) except that the present 

 specimen is larger and has a continuous cingulum on the inner face. 



Chiriacus? Cope. 



(Proc. Acad. NaL Sci. Phila., May, 18S3, p. 80.) 



(No. 1681, Carnegie Museum Catalogue of Vertebrate Fossils.) 

 This is a first lower molar which is provisionally placed in this genus. 

 The anterior portion of the tooth is composed of two nearly equal- 

 sized cusps and a minute anterior conule. This portion is considerably 

 higher than the heel. The external cusp of the heel is larger than the 

 internal cusp. At the posterior internal angle of this cusp is the pos- 

 terior conule which is minute and is continued downward in a cingu- 

 lum on the posterior face of the posteroexternal cusp. 



mm. 



Length of tooth 5.9 



Height of anterior portion of crown 3.6 



Width of posterior portion of tooth 3.8 



Tricentes? Cope. 



(Palseont BulL, No. 37, 1883, p. 315.) 

 (Plate II, figures 5-8.) 



An upper molar (No. 1676) and a portion of a mandible with the 

 last premolar and first molar (No. 1677) are referred provisionally to 

 this genus. 



The upper molar exclusive of the cingulum is V-shaped. There are 

 two principal external cusps, one internal cusp, and two smaller inter- 

 mediate, nearly equal-sized conules. There are quite heavy external 

 and internal cingula. The postero-internal portion of the cingulum is 



<"A Revision of the Puerco Fauna," Bull. Am. Mus. Nat. Hist., Vol. IX, 

 Art. XXII, 1897, p. 269, Fig. 2. 



