101 



7. 



Body slightly flattened, obtuse 

 before, attenuated behind 



Body cylindrical 



8.^ 



Clypeus trilobed,elongated; body 

 slender, subdejjressed . 



Clypeus not trilobed, abbrevi- 

 ated; body thick, convex . . 



'iNa 



ails pectinated 



Nails simple, 10. 



10.^ 



Thorax grooved at the sides of 

 the praesternum 



Thorax without dilated pectoral 

 grooves, 11. 



EucNEMis? (proper, mi.) 



Hentz, No. 1317. '[_Elater incal'i- 



dus Hentz' mss. Catal.] 

 Eucnemis calceatus Say. 

 E. cylindricollis Say. 

 Nematodes Latr. 

 Eucnemis obliquus Say. 

 Melasis scmivittatus Harr. Catal. 



(Hentz, No. 1152.) 

 New genus ; founded on an unde- 



scribed species from Deerfield, 



Mass. The clypeus is trilobed, 



the thorax without grooves, and 



the posterior coxae are large and 



triangularly produced behind, 



covering the base of the thighs, 



as they are also in Eucnemis 



proper. 

 Xylcecus? Serville. (Silenus? 



Latr.) 

 E. erosus Say. 

 Hentz, No. 8G2. \_E later erosus 



Say?, Hentz'-MSS. Catal.] 

 Cratonyciius Dej. Cat. (Notho- 



RA Harr. Cat.) 

 Elater cinereus Weber. 

 Hentz, No. 169. \_Elater cemulus 



Germ, in litt. Hentz' mss. Cat.] 

 communis Schonh. 

 Hentz, No. 134. \_Elater dispar 



Herbst. Hentz' mss. Catal.] 

 And some others. 

 'Agrypnus Esch. (Adelocera? 



Latr. Tapheicerus Harr.) 

 E. marmoratus Fabr. (Hentz, No. 



930.) 

 E. lepturus Herbst. (Hentz, No. 



163.) \_T. fehruarius Hentz' 



mss. Catal.] 

 Hentz, No. 133. [T*. excissatus 



Hentz' MSS. Catal.] 

 E. pennatus F. (Hentz, No. 135.) 



