Goleopterological Notices^ VL 459 



Pionotum -with a subniargiiial delimiting line; species very small. 



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



Dasytes 

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



I>asyta§tes 

 10 — Prothorax constricted near the apex and with a sul)margiual excavated 

 line; plane of the epipleurtx? gradually iuflexed toward apex. 



Escliatoci'epis 

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



body parallel Alloiiyx 



Epipleura^ rather wide, horizontal throughout, gradually narrowed poste- 

 riorly ; body cuneiform ; head somewhat elongate Vectura 



Epipleurnc wide, gradually narrowed and intiexed in plane toward apex; 



body cuneiform Psetidallonyx 



Epipleiine narrow, gradually very feebly detinetl and obsolete along the ex- 

 ternal Hanks posteriorly; ])ody subparallel and narrower in form. 



Leptovectu ra 



12 — Head elongate; pronotum without a submarginal line Mecomycter 



13 — Pronotum without a submarginal line; ungual appendages unet^ual. 



nolicliosoiiia 



This grouping is not altogether satisfactoiy, 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 A-ery great 

 individuality of habitus, and are to be distinguished b^- 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. 



PRISTOSCEI.IS Lee. 



The species described by LeConte under the name Prititoscelis 

 f/7-a)uJiceps, 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 continuous!}- 

 from side to side; the laljrum is relatively very small and strongl}- 

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

 prominent and very distant from the base, and the ei)ipleurai nar- 

 row but horizontal, the edges of the elj'tra being distincth" re- 

 flexed. 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 leno-th. 



