BUFFALO SOCIETY OF NATURAL SCIENCES 



87 



"Genesee black shale," near Louisville, Ky. From these two, the 

 present species is distinguished by the width of the tritoral area, 

 and by the proportions of the mandible as a whole. 



The following specimens seem to belong to this species. They 

 are from the .same formation and locality as the types and likewise 

 were collected by W. L. Bryant. 



Fig. 29. Dinomylostoma buffaloensis, n. sp. Right Mandible, Lacking Hinder 

 Part or Blade. Natxiral Size 



^, outer view; 5, inner. Cotj^peNo. i. £1961. 



E 1962 Front half of a small right mandible, which agrees closely 

 with. the cotypes. The tritoral area is much worn by 

 use, appearing concave in profile view; and behind the 

 tritoral area there is a short sectorial edge, beveled by 

 wear on the outer face. This sectorial margin is strad- 

 dled by three or four faint, line-like tritors, 2 or 3 mm. 

 apart, each forming an oblique angle with the cutting 

 margin. 



