394 ANNALS OP THE LYCEUM. 



fore ; two very distinct deeply indented punctures before the 

 middle each side , a longitudinal slightly indented line extends 

 from the base to the middle ; posterior angles prominent, acute, 

 scutel oval ; elytra with punctured, impressed striae : beneath 

 paler rufous. 



Length seven-twentieths of an inch. 



The anterior indentations of the thorax are situated much 

 farther forward than those of the erosus nob. 



[Belongs to Sericosomus. — Lec] 



12. E. ROTUNDICOLLIS. — Thorax rufous, subquadrate, rounded. 

 Elater ruficollis Melsh. Catal. 



Desc. Head blackish-piceous, irregularly punctured, transverse 

 frontal line obtuse ; thorax rufous, convex, quadrate ; anterior 

 and posterior diameters equal, and equal to the longitudinal 

 diameter ; anterior angles obtusely rounded, much wider than 

 the head ; edge a little contracted before the posterior angles? 

 which are a little [260] excui-ved and very acute ; scutel black- 

 ish-piceous, subtriangular : elytra dusky brownish, with acute 

 hardly punctured striae and convex interstitial lines : beneath 

 rufo-piceous : tarsi pale. 



Length rather more than seven-twentieths of an inch. 



The thorax has a remarkably rounded appearance to the un- 

 assisted eye. It is different from the riificolHs Fabr. 



[Belongs to Corymhites. — Lec] 



13. E IMPRESSICOLLIS. — Dull rufous ) thorax with an im- 

 pressed line and two indentations. 



Elater fuscus Melsh. Catal. 



Desc. Body rather slender, dull rufous, punctured, with short 

 curved hairs ; head with a prominent, subacute, transverse, 

 frontal line : antennae deeply serrated, the serratures paler : thorax 

 longitudinal, rather slender, gradually a little narrowed before ; 

 anterior angles not broader than the head ; edge contracted be- 

 fore the posterior angles which are oblique and not much elon- 

 gated ; a longitudinal impressed line obsolete on the anterior 

 margin, and two rounded indentations on the posterior submar- 

 gin : scutel oblong : elytra with regular close set series of rather 

 large, profound punctures. 



LeuKth more than seven-twentieths of an inch. 



