Goleopterological Notices, VI. 77 T 



impressed along the suture toward base, rather strongly find more 

 narrowl}' impressed within the humeri, the impression extending 

 somewhat obliquely to near the middle of each elytron ; punc- 

 tures verj' coarse, deep and close-set but not so dense as in iwin- 

 ceps. Length 2.0-2.3 mm.; Avidth 0.8-1.0 mm. 



Pennsylvania. The two specimens before me are males, and I 

 have not seen the female. The abdomen in the male is thrown up 

 in a broad flat central region, involving the first three segments,, 

 the elevation gradually becoming free, porrect and laminate- 

 toward the apex, which is truncate, extending slightly over the- 

 fourth segment, the latter being deeply and transversely exca- 

 A^ated. The hind thighs are greatly dilated, clothed on the inner 

 face with short and extremely dense brown pubescence, with a 

 subbasal excavation which is more finely pubescent, the hind 

 tibiae, and the intermediate to a less degree, arcuate, becom- 

 ing slightly thicker toward tip. The corneous sheath of the in- 

 tromittant organ is long, slender and veiy finely pointed. It is 

 probable that the female has the e3'es less approximate and the 

 terminal joint of the antenna shorter. There are few species of 

 Coleoptera having more radical and remarkable sexual characters 

 than this. 



The surface of the head and pronotum is densely opaque, the 

 punctures being extremely deep and closel}^, polygonally crowded, 

 not intermixed with tubercles, as they are in princeps and basalis. 



EMELI^US n. gen. 



The two species separated under this name have the eyes large, 

 subbasal, emarginate through about two-thirds of their length, 

 coarsely faceted, coarsely and sparsely pilose, with the antennm 

 inserted on the canthus, the third joint of the latter much elon- 

 gated and the succeeding joints flabellate in the male. The base 

 of the head exhibits no sign of the deep median sinus of Elonus, 

 and the sculpture and vestiture of the body are quite different. 

 The epistomal suture is much less coarse, the terminal joint of 

 the maxillary palpi nearly similar but the last joint of the labial 

 is auriculate, transverse, pointed within, with the edges of the deep- 

 ly concave lower surface pilose. The middle cox?e are more 

 narrowly separated than in Elonus, and the dividing suture of the 

 first abdominal segment is very strong throughout the width at 

 some distance behind the coxtxi. The posterior tibiic are obliquely 



