100 



1. 



' Prsestcrnum wide and rounded 



behind 



Praesternum miicronate behind, 

 2. 



Antenna; approximated at base, 



3. 

 Antennse not approximated at 



base, 9. 



Nails simple, 4. 



( Nai 

 ■j Nai 



5.-^ 



Nails pectinated 



Tarsi lobed, 5. 



Tarsi simple, 8. 

 f Thorax grooved for the recep-. 

 I tion ot" the antenna?, 6. 



Thorax not grooved for the an- 

 tennse, 7. 

 r Thorax grooved beneath the 



Thorax grooved at th*. sides of 

 , the prasstemum 



Drapetes Megerle. 



rujinotatus Say in litt. (america-' 

 nus Dej. Cat.) 



Hentz'Coll. No. 162. [Elater gemi- 

 natus Say, Hentz' MSS. Catal.] 

 Closely related to Bitprestis, but 

 the thorax has the posterior 

 sjjines more produced. The first, 

 second, third and fourth joints of 

 the tarsi are very short above, 

 but with long lobes beneath. 

 Perothops ? Esch. (Xylophilus? 

 Mann and Esch.) 



muscidus Say. . 



Hentz' Coll. No. 171. [Elater 

 unicolor ? Say. Hentz' mss. 

 Catal.] 



unicolor Say. (Hentz, No. 171, 

 var.) 

 DlRHAGUS Esch. 



E. cb/peatus Say. 



Heniz, No. 1213. \_Elater chjpe- 

 atus Say. Hentz' mss. Catal.] 



Eucnemis amoenicornis Say. 



Hentz, No. 1G6. [Elnter addit'wus 

 Hentz' MSS. Catal.] 



Eucnemis fronto:<us Say. 



Hentz, No. 1212. {E later marti- 

 anus Hentz' MSS. Catal.] 



MiCKORHAGUS Esch. 



Melasis nigricornis Say. 



Hentz, No. 1370. [Elater ohnup- 



tus Hentz' mss. Catal.] 

 E. (riangularis Say. 

 Hentz, No. 1405. [^Elater loratus 



Hentz' mss. Catal.] 

 E. humeral is Say. 

 Hentz, No. 8G.3. [Elalcr hifor- 



mis Hentz' mss. Catal] 



