NO. 1982. FOSSIL COLEOPTERA FROM FLORISSANT— WICKHAM. 289 



Genus STENUS Latreille. 



STENUS MORSEI Scudder. 



Plate 22, fig. 3. 



A fairly good specimen of a Staphylinid in this collection agrees in 

 all respects with the figure and description of Bledius morsei Scudder. 

 However, I refer it with some confidence to Stenus and believe that 

 Scudder erred in his generic assignment. All the visible characters 

 of his figure are those of Stenus, the coarse sculpture (Scudder speaks 

 of granulations, but I presume that his specimen, like mine, was a 

 reverse), the long abdomen with seven plainly visible segments, the 

 slender legs and antennae, none of which features are in the least like 

 Bledius armatus, with which he compares his insect. I figure the 

 specimen in hand, since it gives a somewhat different view of the 

 species. 



It is interesting to note in this connection that Scudder was inclined 

 to refer Stenus prodromus Heer (from Aix) to Bledius. In this he is 

 not followed by Handlirsch, who lists several other Steni from the 

 Tertiaries of Europe. 



Cat. No. 59637, U.S.N.M. 



MIOLITHOCHARIS, new genus. 



Resembles LitJiocharis (L. corticina) in general form and differs in 

 the rounded head, much less quadrate prothorax, and particularly in 

 the lack of long setee on the edges of the head, prothorax, and abdo- 

 men. The type is M. litTiographica, described below, which seems 

 best assigned near LitJiocharis by the antennal structure, the form of 

 the body, and by the uniform sculpture of fine punctuation accompa- 

 nied by a covering of short delicate hairs. 



MIOLITHOCHARIS LITHOGRAPHICA, new species. 

 Plate 22, figs. 1, 2. 



Form moderately elongate. Head about as long as broad, ovate, 

 the hind angles rounded, eyes not defined. Antennae longer than 

 usual in the Staphylinidse of Florissant, reaching to within about one- 

 third of the prothoracic base, the first joint large and apparently about 

 as long as the next two, the second scarcely shorter than the third, 

 which is longer than the fourth, fifth still a little shorter, sixth to 

 tenth more transverse, submoniliform, eleventh longer, oval, the in- 

 crassation of the terminal joints not strong. Prothorax a little 

 shorter than the head, subquadrate but broader than long, the angles 

 rounded. Elytra about one-fourth longer than the prothorax, con- 

 jointly a little more than one-fifth wider than long, tips truncate, sides 

 subparallel. Abdomen a little longer than the rest of the body, sub- 

 parallel at sides to about the middle, thence tapering to the tip. Legs 

 80459°— Proc.N.M. vol.45— 13 19 



