Coleopterological Notices, VI. 459 



Pronotum with a submarginal delimiting line; sj)ecies very small. 



Da§ytelliis 

 a — Pronotum with a submarginal line delimiting a lateral rugose area. 



Dasytes 

 Pronotum without trace of a submarginal line or lateral rugose area. 



Dasytastes 

 lO — Prothorax constricted near the apex and Avith a submarginal excavated 

 line; plane of the epipleurse gradually inflexed toward apex. 



Eschatocrepis 

 11 — Epipleurse wide, horizontal, abruptly vanishing near the elytral apex; 



body parallel Alloiiyx 



Epipleura? rather wide, horizontal throughout, gradually narrowed i)Oste- 



riorly ; body cuneiform ; head somewhat elongate Vectura 



Epipleurse wide, gradually narrowed and inflexed in plane toward apex; 



body cuneiform Psetlclalloiiyx 



Epipleura; narrow, gradually very feeblj' defined and obsolete along the ex- 

 ternal flanks posteriorly; body subparallel and narrower in form. 



Leptovectu ra 



12 — Head elongate; pronotum Avithout a submarginal line IWecoiliycter 



13 — Pronotum without a submarginal line; ungual a'ppendages une(jual. 



Dolicliotiionia 



This grouping is not altogether satisfactory-, because of the 

 proportionally large number of species comprised in only two or 

 three of the twenty genera, and also for the reason that several of 

 the genera now represented by single species have no very great 

 individuality of habitus, and are to be distinguished by not more 

 than one or two really radical differential characters ; but I am 

 unable to devise a more consistent or natural classification at the 

 present time. 



PRISTOStELIS Lee. 



The species described by LeConte under the name Prisfoscelis 

 grandicejJS, offers so many points of divergence from the tA'pical 

 forms of Trichochrous that we are compelled to suggest its gen- 

 eric isolation. The epistoma, for example, is wholly obsolete, 

 the apical margin of the front being finely beaded continuously' 

 from side to side; the labrum is relatively very small and strongly 

 transverse, and the mandibles long and stout, the eyes small, 

 prominent and very distant from the base, and the epipleurae nar- 

 row but horizontal, the edges of the eljtra being distineth- re- 

 tlexed. The ungual appendages are as long as the claws and sub- 

 equal, but the inner is detached from the claw through outer third 

 of its length. 



