1877.] ^« [Cope. 



It is well distinguished from this form by the structure of the component 

 parts of the crown of the last molar tooth, and by its long symphysis, that 

 of the T. mirificus possessing the more usual short spout. It is with the 

 T. longirostris, of Eppelsheim and the valley of the Danube, that the 

 closest affinity exists. In T. campester the symphyseal production is much 

 more robust, not being separated from the rami by any constriction, as in 

 T. longirostris. It is moreover without incisive tusks, but it is yet uncer- 

 tain what value should be attached to this character, as it may turn out to 

 be individual or sexual. In the intimate structure of the molars there is 

 considerable resemblance to the T. longirostris ; that species is however 

 stated by Dr. Falconer* to possess but five crests and a heel on the" last 

 molar. The presence of the enamel band on the tusks also separates the 

 T. campester from that species, where, according to Mr. Vacek,f it is 

 wanting. 



In comparison with M. sivalensis, this Mastodon differs in, the transverse 

 character of the valleys ; in the Indian species the tubercles alternate and 

 close them. 



The dimensions of the T. campester are those of the African Elephant. 



From the Upper Miocene and Loup Fork horizon of Kansas. 



Taxidea sulcata sp. nov. 



This badger is represented by the nearly entire maxillary bone of the 

 left side containing all the teeth excepting the canine and first premolar. 

 It resembles the corresponding portion of the T. americana very nearly, 

 but differs in two important features. The first of these is the abbrevia- 

 tion of the anterior portion of the dental series. The first premolar is 

 closely wedged in between the canine and second premolar, so that its an- 

 terior root is almost obsolete. The head was thus doubtless relatively 

 shorter than in the existing species where there are hiatuses between the 

 roots of the first premolar and adjacent teeth. The second character is 

 seen in the last or true molar. On its crown the tubercles are arranged in 

 two well separated transverse rows, forming crests by their confluence, 

 which are separated by a deep valley, and bound by a half valley in front 

 and rear. 



Measurements. M. 



Length of series, including canine '. 038 



" premolars 023 



' ' last premolar Oil 



Width of " " 009 



Length of last molar (inside) 012 



Width " " ..010 



From the Pliocene of Washington Terr.; found by Major Truax, U.S.A. 



* On British and European Fossil Mastodons, p. 19 (8 vo.). 



t Ueber Oesterreichische Mastodonten Wien, 1877, p. 31 (Abh. K. K. Geo]. 

 Reichanstalt). 



