Coleopterological Notices, V. 403 



Prothorax much smaller and only slightly wider than long, perfectly 

 similar in the two sexes. 

 Larger species, the elytra each strongly rounded at apex ; hypomera 

 narrow, much less than one-half as wide as the distance thence to the 



coxae ; tempora not one-third as long as the eye — % rilfitarsis 



Smaller, the elytra narrower, each subtruncate at apex, the lateral 

 angles much less broadly rounded and oblique ; hypomera fully one- 

 half as wide as the distance thence to the coxae ; tempora nearly one- 

 half as long as the eye and more prominent than in rujitarsis — % . 



filicornis 

 Elytra short, always distinctly less than twice as long as the prothorax ; color 

 of body paler, castaneous throughout. Rocky Mts. 

 Head strongly and densely punctate throughout ; antennae with the inter- 

 mediate joints more than three times as long as wide, more finely and 

 densely pubescent ; sides of the prothorax oblique and very feebly, 

 broadly sinuate from the lateral angles to the base ; large species, the 

 male with the sixth segment sinuato-truncate at apex — % . 



lirevipennis 

 Head minutely and remotely punctate especially toward the middle ; 

 antennae with the joints rather shorter and more coarsely pubescent ; 

 sides of the prothorax very strongly constricted behind, deeply sinuate, 

 becoming subparallel toward base; male with the sixth segment some- 

 what lobed in the middle, the anterior tarsi more noticeably dilated ; size 

 much smaller — % castanea 



It is possible ihsii fusconigr a Makl. may be the same as cavicollis 

 or longipalpus, but considering the remote locality and the undoubted 

 plurality of species in the genus, the chances are decidedly against 

 such identity. 



T. rilfitarsis n. sp. — Rather shining, black throughout, the trochanters 

 and tips of the coxae feebly rufescent ; pubescence dense, suberect, consisting 

 of longer stiffer and more erect, and shorter and finer hairs, confusedly inter- 

 mingled especially on the elytra. Head finely, densely punctate, distantly 

 biimpressed between the eyes, transversely impressed between the antennae, 

 the latter slender, filiform, black, not at all incrassate, more than one-half 

 as long as the body, the joints fully three times as long as wide and feebly 

 obconical ; eyes well developed, prominent ; tempora very short ; ocelli small, 

 separated by two-fifths the entire width ; fourth palpal joint one-half longer 

 than the second and much more than twice as long as the third in both sexes. 

 Prothorax small, one-third wider than long, widest and laterally subangulate 

 at two-fifths from the apex : sides thence to the base convergent and evenly 

 sinuate throughout, to the apex more feebly convergent and broadly arcaate ; 

 basal angles nearly right bat slightly blunt; disk finely, densely punctate, 

 even though feebly distantly and obliquely biimpressed at basal third, and 

 with a large deep impression at each side at the middle; surface anteriorly 

 broadly, evenly convex from one lateral edge to the other, the side margins 



