ANNALS OF THE LYCEUM. 395 



Readily recognizable by the two indentations of the thorax. 

 The name/uscus is pre-occupied. 

 [Is an Adelocera. — Leg.] 



14. E. siLACEUS. — Slender, pale ochreous ; head and thorax 

 tinged with rufous. 



Elater silaceous ) i n i 



Elater nmhraticus f ' 



Desc. Body pale yellowish ochreous, with short hairs ; slender : 

 head without any prominent transverse line : antennas not ser- 

 rated, second and third joint equal and shorter than the succeed- 

 ing ones, terminal joints not truncated, nor very acute : thorax 

 slightly tinged with rufous ; longer than broad ; not decidedly 

 narrowed before ; anterior angles not broader than the head ; 

 posterior angles a little excurved, rather long ; a longitudinal 

 obsolete, impressed line : scutel oblong, convex ; elytra with 

 punctured strias not very deeply impressed : venter yellow. 



Length nearly three-twentieths of an inch. 



A very common species. I have a variety of which the tho- 

 rax and venter are almost black. 



[A Sericosomus. — Lec] 



15. E. RUBRicus. — Thorax bright rufous with a large black 

 spot ; elytra paler. 



Elater ruhricus Melsh. Catal. 



Desc. Body oblong oval : head black, transverse line acute, but 

 not very prominent : antennae piceous, robust, deeply serrated^ 

 second and third joint equal, much smaller than the following 

 ones, which are triangular, excepting the terminal ones ; ultimate 

 joints slightly truncated at tip : thorax as broad as long, regularly 

 arcuated, and with the head forming a semi-oval ; highly polished, 

 bright rufous with a very large black orbicular spot before, 

 reaching beyond the middle : scutel oval, truncate at base : elytra 

 pale brownish-rufous, with regularly punctured, impressed striae : 

 postpectus and middle of the pectus, black : feet piceous. 



Length nearly three-tenths of an inch. 



[Belongs to Elater ; the specimen was immature, as the elytra 

 are usually black. — Leg.] 



16. E. DiLEGTUS. — Brownish-black ; thorax rufous, bilineate 

 with black. [262] 



Elater trilineatus Melsh. Catal. 



