Coleopterological Notices. 491 



quently described under the names Macrotoma californica and 

 sjriculigera by White. 



The differences may be expressed as follows the characters refer- 

 ring to the males only : — 



Genre produced in a very acute dentiform process at apex ; third antennnl 

 joint subequal in length to the prothorax ; metasternum with a fine 

 carina almost throughout its length ; densely pubescent pads of the 

 posterior tarsi not divided by a glabrous line except near the base of the 

 first joint ; fifth ventral segment with the sides strongly convergent from 

 base to apex, the latter about one-half as wide as the base, very feebly 

 incurvate, the angles obtuse but not at all rounded ...spiculatlis Lee. 



Genre rectangular, not rounded but without acute process ; third antennal 

 joint distinctly longer than the prothorax ; metasternum without median 

 carina except in posterior third ; spongy-pubescent pads of the posterior 

 tarsi divided throughout by a fine glabrous line; fifth ventral segment 

 having the sides feebly convergent, the apex fully three-fourtbs as wide 

 as the base, broadly, strongly sinuate, the angles extremely obtuse and 

 indistinct lieouiexicailUS n. sp. 



In general habitus the two species are easily distinguishable, the 

 prothorax and elytra of spiculatus each being much longer and 

 more convex than in neomexicanus, but the differences in the sexual 

 modifications at the apex of the abdomen — shown on the accom- 

 panying plate — are of course conclusive. 



The American representatives of Ergates differ from the Euro- 

 pean, to a considerable extent, in the length of the antennas and 

 anterior legs in both male and female, and also in the denticulation 

 of the sides of the prothorax, one of the median teeth being much 

 stronger than the others in the European species. It seems proper 

 therefore that the name Trichocnemis Lee. should be preserved, if 

 not with full generic value, at least as a subgenus. 



TRAGOSOMA Serv. 



I have before me representatives of three species assignable to 

 this genus, which differ widely among themselves; they may be 

 distinguished as follows: — 



Head and prothorax very finely and extremely densely punctate, densely and 

 conspicuously pilose liarrisi 



Head and prothorax almost glabrous, very coarsely and sparsely punctate. 



Antennae glabrous spidlllim 



Antenna? finely pubescent pilosicorilis 



