NATURAL SCIENCES OF PHILADELPHIA. 



231 



The specimen consists of tlie fore part of the snout, containing on one side 

 of the jaw the upper canine and anterior two molar teeth. It belonged to a 

 species larger than any of those previously noticed. The face in advance of 

 the molars was more prolonged proportionately than in other species, but was 

 also proportionately narrower. 



The two premolars retained in the fossil are blunted from wear, but are 

 clearly constructed after the same pattern as those of the living Peccaries. 



The incisors, as indicated by their alveoli, held the same relative position as 

 in the latter, but appear to have been comparatively feeble organs, and the an- 

 terior pair were but sliglitl3' larger than tlie lateral ones. 



The upper canine has the same form and mode of insertion as in the recent 

 Peccaries, but is proportionately smaller. 



The anterior ends of the coossified preraaxillaries project to a much greater 

 degree in advance of the incisors than in the other known Peccaries. They 

 are also more truncate in appearance ; and on each side of the intermaxillary 

 notch they exhibit a conspicuous pit, apparently for the attachment of a pair 

 of muscles intended for a longer and more mobile snout than is possessed by 

 the living Peccaries. 



The measurements of the fossil compared with those of other Peccaries, are 

 as follows : 



First molar to front of preraaxillaries, 



" " to canine alveolus, 

 Length of jaw in advance of canines, 

 Breadth outside of canine alveoli, 

 Ant. post. diam. first premolar, 



*' " " second " 



" " " base of canine, 



Mr. Timothy Conrad has recently submitted to my inspection the crown of a 

 second molar tooth obtained by Dr. P. Kuieskern, from a miocene formation of 

 Shark River, Monmouth Co., New Jersey. • 



The tooth bears nearly the proper relation of size with the premolars in the 

 specimen above described of D. nasulus to belong to the same animal, but the 

 fact of its being found in a miocene deposit, while the latter is of supposed 

 post-pliocene age, renders it probable that it pertains to a different species. 



The crown has a strong basal ridge, hardly interrupted at the most prominent 

 portion of the lobes externally and internally. The lobes present the same 

 form and relative position as in D. labiatus. They are considerably worn, ex- 

 hibiting on their summits exposed tracts of dentine ; nearly circular on there 

 external, and larger and irregularly reniforra on there internal. The measure- 

 ments of the tooth in comparison with the corresponding tooth of other species 

 are as follows : 



ant. post, diam. Q\ lines, 

 " 7 

 " " 6J " 



u u 7| u 



trans. 8^ lines. 

 " 6| " 

 " 5^ " 



Fossil tooth, 

 D. labiatus, 

 D. torquatus, 

 D. compressus, 



Anchippus Texanus. 



An apparent solipedal pachyderm, allied to Atickitkermm, is indicated by a 

 specimen consisting of the greater and more characteristic portion of an upper 

 molar tooth submitted to my examination by Dr. B. F. Shumard. It was ob- 

 tained from " Hutchen's well," from a yellow sandstone, supposed to be of 

 miocene age, at a depth of 50 feet below the surface, in Washington Co., 

 Texas. 



The size of the tooth, as well as the general form and proportions, have been 

 nearly as in the European AnchUherium aurelianense. Six lobes, as in the latter, 

 enter into the constitution of the crown. The external lobes, imperfect, appear 



186S.] 



