446 CASEY 



erect hairs fine and yellowish-cinereous in color; head large, 

 wider than long, narrower than the prothorax, coarsely but not 

 very closely, unevenly punctate, densely and with anastomosing 

 rugie laterally, the epistoma triangular, with parabolically 

 rounded apex ; prothorax more transverse, twice as wide as long, 

 widest toward apex, the base as in villosa but more distinctly 

 narrower than the apex, the sides very feebly arcuate ; basal 

 angles right, not prominent, the apical perhaps a little less pro- 

 duced and thicker than in villosa but veiy prominent, the remain- 

 ing characters as in that species, except that the surface between 

 the subbasal impression and basal margin is subimpunctate ; ely- 

 tra nearly similar but broader, barely three times as long as the 

 pi'othorax and about a fourth wider, still moi'e coarsely, confusedly 

 and equally sparsely punctate ; abdomen more coarsely, densely 

 and subconfluently punctate, the male sexual chai'acters similar. 

 Length 5,6 mm.; width 2.8 mm. (cJ^). Utah (Clear Lake), 

 — H. F. Wickham grandiceps n. sp. 



I do not have an example of hisj^idula before me at present, 

 the above description being by Dr. Horn, but if the language is 

 correct it is distinct from either of the others, notably in its bas- 

 ally broader prothorax, more rounded epistoma and apparently 

 less elongate vestiture. There are probably a number of species 

 still to be discovered but they are individually rare. 



The flanks of the elytra have a large deep indentation near 

 basal third in this genus, which remarkable character is phylo- 

 genetically the same as the short furrow noted so frequently in 

 the Eurymetoponini. 



Triphalus Lee. 

 The body in this genus is still less inflated posteriorly and 

 more cylindrical than in Oxygonodera, and we return to the 

 margined sides of the prothorax characterizing Triorophus, but 

 there are some features which indicate a departure in the direc- 

 tion of the Trimytini ; the elytra, for example, embrace the sides 

 of the body less widely than in any of the preceding genera and 

 the male has no pubescent fovea on the first ventral. In most of 

 its characters and in general facies, however, it is wholly iso- 

 lated, the head as in the preceding genus but with the eyes less 

 prominent and in fact but feebly convex, coarsely faceted, well 

 developed and anteriorly emarginate and bounded above by a 

 very fine and feeble carina, the antennae long in the type spe- 

 cies, with the three outer joints larger as in Triorophtts. The 



