STAPHYLINID/E. 47 



HOMALOTA RECISA. 



//,,//,,/,/ redsa Snukl.. Tert. Ins. N. A., 5<9-51i>. pi. 8, tig. 14 (1890). 

 Green River, Wyoming. 



GYROPH.ENA Maimerhei.n. 



The following is the only known fossil species of this genus, which is 

 now widespread, witli tolerably numerous species, of which about half a 

 dozen occur in North America. 



GYROPH.ENA SAXICOLA. 



iri/i-dji/Kiini xd.i'lfiilii Sriulil., Bull. 1 T . S. Geol. Geogr. Surv. Terr.. II, 78 (1876); 

 Tert. Ins. N. A., 509, pi. 5, tigs. 123, 124 (1890). 



White River, Utah. 



ACYLOPHORUS Nordmaim. 



No other fossil species than the following- is known The genus has 

 five or six species in the United States and about twice as many others in 

 various parts of the world 



ACYLOPHORUS IMMOTUS sp. 11OV. 



PI. V. tig. 7. 



A rather small species, allied to A. flavicolUs Sachse, but differing from 

 any of the living species I have seen in the brevity of the antennae. The 

 head is small, well rounded, considerably narrower than the prothorax. 

 The antennae are poorly preserved, especially at base, and the joints in the 

 apical half are quadrate, scarcely so long- as broad, and only very slightly 

 enlarged apically, the whole scarcely reaching to the apex of the rather 

 short prothorax. The latter is scarcely so long as broad, tapers though 

 very slightly from the base, is truncate at both extremities and smooth; a 

 pair of punctures are seen on the disk, just where they occur in A. Jiuri- 

 colHs. Both the prothorax and the head, as well as the finely haired legs, 

 are of a testaceous tint, while the rest of the body is piceous. The elytra 

 are obscurely preserved, but are black, hairy, about as long as the prothorax 

 and a little broader, the whole body enlarging from in front to the tip of the 

 elytra and then tapering gradually and regularly to the narrowed and 



