200 New American Species of the Genera 



excurved and very acute : scutel blackish piceous, sub- 

 triangular : elytra dusky brownish, with acute hardly 

 punctured stria? 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 

 unassisted eye. It is different from the ruficollis Fabr. 



13. E. impresskollis. Dull rufous; thorax with an impressed 

 line and two indentations. 



Elaterfuscus, Melsh. Catal. 



Description. Body rather slender, dull rufous, punctured, 

 with short curved hairs : head with a prominent, subacute, 

 transverse, frontal line : antenna deeply serrated, the serra- 

 tures paler : thorax longitudinal, rather slender, gradually 

 a little narrowed before ; anterior angles not broader than 

 the head ; edge contracted before the posterior angles 

 which are oblique and not much elongated ; a longitudinal 

 impressed line obsolete on the anterior margin, and two 

 rounded indentations on the posterior submargin : scutel 

 oblong : elytra with regular close set series of rather large 

 profound punctures. 



Length more than seven-twentieths of an inch. 



Readily recognisable by the two indentations of the thorax. 

 The name fuscus is pre-occupied. 



14. E. silaceus. Slender, pale ochreous : head and thorax 

 tinged with the rufous. 



Elater silaceus, •> ' „ , _, 



„, ' y .. } Melsh. Catal, 



JrJater imbratieus, S 



