November, 1S44.] 159 



densely pubescent than the thorax ; blackish : beneath similarly colored : feet 

 dull rufous. 



Ectinus, Each. 



E. granulosus. Deep black; head and thorax densely granulated. — 6$ 1. 

 long ; 2* 1. wide. Pennsylvania. 



Elater sethiops, Melsh. Catal. 



Deep black, densely, finely and shortly hirsute: head granulate or finely ru- 

 gosely punctured, with a slight impression between the eyes ; clypeus deflexed, 

 with the edge slightly raised and subacutely rounded at tip ; antennae short, 

 strongly serrated from the fourth joint, with the second and third joints small, 

 conjointly not as long as the fourth, which is some longer than the fifth, termi- 

 nal joint about as long as the fourth, subulate ; black, minutely and densely hir- 

 sute ; thorax rather convex, longer than wide, densely and finely granulate or 

 confidently punctulate, with the sides finely and acutely margined, rectilinear 

 from the hind angles to beyond the middle, thence to the apex, abruptly round- 

 ed, feebly contracted before the hind angles, which are subacute, hardly excur- 

 ved, acutely and obliquely carinate ; an obtuse indentation in front of the scutel 

 which is flat, ovate-lanceolate, punctulate : elytra deeply punctate-striate,sutural 

 stria; impunctured, the interstices convex, densely and minutely punctured and 

 transversely corrugated ; sides subparallel from the base to beyond the middle, 

 where they are slightly widest, thence to the apex gradually arcuated : beneath, 

 viewed from behind, simply blackish, viewed laterally and before, ashy sericeous : 

 feet chestnut-red ; tarsi dusky rufous, basal joint as long as the two following 

 unitedly ; posterior femoral plates lanceolate, very slightly dilated within. 



Elater, Linn. Eatr. 



1. E. humeralis. Black; exterior basal angles of the elytra rufous. — 4§ 1. 

 long, \\ 1. wide. Pennsylvania- 



Elater humeralis, Melsh. Catal. 

 " trinotatus, Knoch. MS. 



Deep black, shortly hirsute : head moderately convex, confluently punctured, 

 hirsute, with the clypeus margined and obtusely rounded at apex ; antennas 

 longer than the thorax, serrated from the fourth joint, with the second joint 

 smaller than third, which is much less than the fourth, the latter equal to the 

 fifth, terminal ovate, obsoletely subulate ; black •- thorax a little longer than wide, 

 one-third wider at base than at apex, where it is not wider than the head, mo- 

 derately convex, very finely and somewhat distantly punctured, shining ; sides 

 rounded ; posterior angles scarcely excurved, acute, obliquely carinate : scutellum 

 narrow, rounded at tip : elytra with the sides parallel from the base to behind 

 the middle ; finely punctate-striate, the interstices flat, transversely corrugated ; 

 exterior basal angles and parapleurse rufous, the former including sometimes 

 several black punctures : feet pitchy-black, with the tibiae brownish ; tarsi slender, 

 simple ; posterior femoral plates slightly dilated within and with a slight tooth 

 in the middle. Agrees somewhat with the description of E. armus, Say. The 

 present and some of the following species might perhaps be referred with more 

 propriety to some other subgenera of the present family. 



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