March, 1845.] 217 



peus impressed, the latter at apex truncate ; labrum piceous : antennoe dull 

 testaceous, or castaneous, three first joints piceous ; mouth dusky rufous ; palpi 

 piceous; thorax much punctured, punctures small, faintly impressed ; dorsal 

 line distinct behind the middle ; outlines altogether as in that of laevigatus, Fabr.: 

 scutel densely and minutely punctured, densely ashy-pubescent : elytra ob- 

 viously punctate-striate, striae and punctures fine, the interstices very finely 

 corrugated ; outlines as in laevigatas : feet black or dark brown, with the ante- 

 rior side of the fore and middle thighs rufous. Resembles much the male of 

 Elater Ixvigatus, Fabr., but it is more distinctly punctured on the head and 

 less on the thorax, and has the elytral striae more obvious than that well known 

 species. 



Agriotes, Eschsch. 



1. A. truncatus. Thorax fuscous ; elytra dull testaceous ; feet pale rufous. — 

 3| 1. long, 1£ 1. wide. Pennsylvania. 



Elater truncatus, Melsh. Catal. 



Head fuscous, slightly convex, much punctulate, clothed with prostrate yel- 

 lowish hairs, with a short obtuse linear impression on the front : antennae 

 rufous, short, filiform, with the first joint long, robust, subclavate, second some 

 longer than the third : thorax very convex, fuscous, a little wider than long, 

 wider behind than before, with the sides obtusely rounded ; punctured like the 

 head, finely and sparsely pubescent ; dorsal line apparent only behind the mid- 

 dle ; hind angles acute, scarcely excurved : elytra ochreous, slightly widest in 

 the middle, finely punctate-striate, striae more obvious towards the base and 

 lateral margins, than near the suture and apex, the interstices convex, trans- 

 versely corrugated ; yellowish pubescent : feet pale rufous : beneath dusky ; 

 tarsi simple ; posterior femoral plates lanceolate. 



2. A. striatulus. Dull reddish-brown, beneath blackish. — 4£ 1. long, If 1. 

 wide. Pennsylvania. 



Elater striatulus, Melsh. Catal. 



Oblong dull reddish brown, yellowish pubescent : head moderately convex, 

 confluently, rugosely punctulate: antennae short, filiform, yellowish-rufous, 

 with the second joint some longer than the third, which is the length of the 

 fourth, terminal joint obscurely subulate; thorax convex, as wide as long, very 

 slightly wider at base than at apex, with the sides rounded ; color of the head, 

 with the margins colored like the elytra ; shagreened or punctured like the 

 head ; dorsal groove apparent only behind the middle ; hind angles subacute, 

 excurved, color of the elytra, which is paler than the thorax, slightly widest be- 

 hind the middle, punctate-striate, interstices finely transversely wrinkled : be- 

 neath blackish, densely and distinctly punctulate : feet color of the antennae; 

 tarsi simple; posterior femoral plates lanceolate. Bears some resemblance to 

 the preceding species, but the thorax is less convex than in that species. 



3. A. pubescens. Dark fuscous, pubescent ; antennae and feet rufous. — 4§ I. 

 long, 1| 1. wide. Pennsylvania. 



Dark brown, ashy-pubescent : head slightly convex, densely punctured, punc- 

 tures rather large; clypeus truncate at apex ; antennae as long as the thorax, 



