100 



Prfesternum wide and rounded 

 behind 



Prsesternum mucronate beliind, 

 2. 



r Antennas approximated at base, 

 Antennae not approximated at 





base, 9. 



J Nails simple, 4. 

 "1 Nails pectinated 

 Tarsi lobed, 5. 



d.-i 



Tarsi simple, 8. 

 f Thorax grooved for the recep- 

 I tion of tlie antennte, 6. 



Thorax not grooved for the an- 

 tennas, 7. 

 r Thorax grooved beneath the 

 margin 



Thorax gi-ooved at the sides of 

 the prassternum 



Dr APEXES Megerle. 



rufinotatus Say in litt. (america" 

 nus Dej. Cat.) 



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

 natus Say, Hentz' MSS. Catal.] 

 Closely related to Buprestis^ but 

 the thorax has the posterior 

 spines 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 Saj'. 



Hentz' Coll. No. 171. \_Elater 

 unicolor ? Say. Hentz' MSS. 

 Catal.] 



unicolor Say. (Hentz, No, 171, 

 var.) 

 DiRHAGUS Esch. 



E. clypeatus Say. 



Hentz, No. 1213. [Elater clype- 

 atus Say. Hentz' mss. Catal.] 



Eucnemis amcenicornis Say. 



Hentz, No. 166. [Elnter additivus 

 Hentz' MSS. Catal.] 



Eucnemis frontosus Say. 



Hentz, No. 1212. [Elater marti- 

 anus Hentz' mss. Catal.] 



MiCRORHAGUS Esch. 

 Melasis nigricornis Say. 

 Hentz, No. 1376. [Elater ohnup- 



tus Hentz' mss. Catal.] 

 E. triangularis Say. 

 Hentz, No. 1405. [Elater loratus 



Hentz' mss. Catal.] 

 E. humeralis Say. 

 Hentz, No. 863. [Elater hifor- 



mis Hentz' MSS. Catal] 



