72 TERTIARY COLEOPTERA OF NORTH AMERICA. 



The species closely resembles the preceding in g-eneral appearance, but 

 is smaller and is at once distinguished by the equal density and coarseness 

 of the abdominal granulations as compared with those of the thorax and 

 elytra. 



Length, 4.8 to 5.1 mm.; breadth, 1.3 mm. 



Florissant, Colorado; two specimens, Nos. 1123, 2803. 



This species comes close to the fossil Stemis 'prodronms Heer from Aix, 

 which I should look upon as a Bledius. 



Bledius osborni sp. nov. 



PI. VIII, figs. 11, la. 



This species, smaller than the last, but closely resembling it in general 

 appearance, differs from it and from B. morsel in its more finely granulate 

 body and stouter legs, and from all other species described, living and fossil, 

 in the coarseness of the antennae. The body is piceous throughout. The 

 head is as broad as the thorax, subquadrate, of equal length and breadth, 

 the surface exceedingly finely granulate, or in places with irregular trans- 

 verse striation, which if broken hj equally deep opposing striae would form 

 similar granulations. Antennae reaching to the posterior edge of the thorax, 

 stout, enlarging but slightly and with perfect uniformity from the second 

 joint outward, the first joint not very long and not greatly enlarged apically, 

 the second scarcely smaller at base than the apex of the first, and as large 

 as it at apex, being like the succeeding joints cuneiform with slightly convex 

 sides and rounded apical angles, the second to the fourth joints a little longer 

 than broad, the fifth to the eig'hth about equally long and broad, the ninth 

 and tenth a little broader than long and half as broad again as the second, 

 the apical joint subrotund, slightly longer than broad. Tliorax of the length 

 of the head, equal, the sm-face very finely granulate, the granules so arranged 

 as to give somewhat the appearance of longitudinal beaded combings. 

 Legs short and rather stout, the tibiae scarcel)^ enlarging apically. Eh'tra 

 a little longer than the thorax, broader than long, delicately and rather 

 feebly granulate. Abdomen half as long again as the rest of the body, as 

 broad at base as the thorax, with parallel sides, tapering only in the last 

 three segments, the tip bluntly pointed, the surface delicately and especially 

 above rather sparsely granulate, very finely and very sparsely pubescent 

 both above and below. 



