■new Species ofHisteridje. 481 



Mesosternum witli a fine entire marginal line, surface coarsely 

 and moderately densely j)unctured. Legs rufous. Anterior 

 tibiae with four or five minute teeth, the middle with two 

 larger teeth ; posterior finely bispinose, the upper spine, which 

 is near the middle, very small. 



" L. -08 inch ; 2 mu). 



" A more robust species than americanus and less coarsely 

 punctured, and differing es])ecially in the dentation of the 

 tibiae. The colour-character is of secondary importance, and 

 while the three specimens before me are alike, it is possible 

 that others will occur entirely black. 



" Collected by Mr. II. K. Morrison in Western Nevada." 



All the specimens I have seen have red elytra. 



DiPLOGRAMMicus, gen. nov. 



Body oblong, somewhat convex, punctulate above ; elytra 

 with three dorsal strise, third sometimes broken, depressed in 

 the sutural area; propygidium convex, not impressed nor 

 uneven ; prosternum bistriate ; mesosternum raarginate 

 anteriorly. The other characters correspond with those of 

 Omalodes, of which genus omega, Kirb., is the type. 



The species to be included in I) iplogravimicus are eheninus 

 {Omalodes), Er., type, Marseuli, Sch., and xntermediusy Lew. 



Diplogrammicus intermedins, sp. n. 



Oblongus, parum parallelus ; fronte imprcssa stria retrorsum angu- 

 lata ; pronoto lateribus et anterioribus deuse punctato ; elytris 

 striis 1-3 dorsalibus integris ; propygidio pygidioque dense 

 punctatis ; prosterno in medio bistriate. 



L. 9 miU. 



Oblong, somewhat parallel laterally, black and shining ; 

 the head impressed longitudinally, stria complete, turning 

 backwards in the middle, surface rather densely punctured; 

 the thorax densely punctured laterally, less distinctly behind 

 the head, and the points gradually lessen to the disk, scutellar 

 region smooth, the lateral stria is not well-marked owing to 

 the encroachment of the punctuation and it ceases at the 

 posterior angle. The lateral stria? of Marseuli, Sch., is well- 

 marked and turns inward at the base and passes the angle. 

 The elytra are finely not closely punctulate (more distinctly 

 so than in Marseuli), the striaj 1-3 are complete, but the 

 third is somewhat irregular in its course, the others are 

 wanting; the jjropygidium is coarsely punctured and some- 

 what gibbous along the sides; the pygidium is similarly 



