November, 1844.] 151 



than convex, distantly and finely punctured : beneath and feet color of the 

 head or thorax. 



3. C. tesfaceus. Testaceous ; posterior angles of the thorax strongly cari- 

 nate. — 4^ 1. long, 1$ 1. wide. 



Testaceous, clothed with fine, short, yellowish hairs ; glossy : head with 

 large approximate punctures, with the front very slightly convex; clypeus 

 marginate &nd obtusely rounded at tip; eyes black; antennae as long as tho- 

 rax, slightly serrate, color of the thorax : thorax wider than long, much 

 wider at base than at apex, finely, deeply and distantly punctured, rufo-tes- 

 taceous, with the sides rectilinear from the hind angles to beyond the middle, 

 thence to the apex somewhat suddenly rounded; hind angles straight, slightly 

 incurved and deflexed at tip. prominently carinated, with the carinas acute, 

 subparallel to the lateral edges, and extending nearly to the middle of the 

 sides : scutellum finely and sparsely punctured : elytra progressively nar- 

 rowed from the base to the apex ; finely punctate-striate, with the punctures 

 longer than wide, profound, interstices flat, distantly and very finely punc- 

 tured : beneath rufo-testaceous, densely and rugosely punctured : feet testa- 

 ceous ; claws unusually finely pectinated. Fouud in Pennsylvania. — Very 

 rare. 



4. C. depressus. Dark fuscous, pubescent ; beneath densely and rugosely 

 punctured; feet rufous. — 5 1. long, 1| 1. wide. Pennsylvania. 



Elater depressus, Melsh. MS. 



Deep brown, pubescent : head with large vicinal punctures ; front slightly 

 convex; clypeus marginate at tip and each side slightly depressed, and with 

 sparse longitudinal wrinkles, the edge obtusely rounded, and but slightly 

 elevated ; antennas simple, slender, rufous, with the second joint short, 

 obconic, third and following joints subclavate ; glossy : thorax shorter than 

 wide, with sides gradually and rectilinearly attenuated from the tip of the 

 hind angles to beyond the middle, thence to the apex more suddenly nar- 

 rowed ; finely and distantly punctured, on the disk, more closely on the 

 lateral margins ; medial line obvious from the base to the middle ; posterior 

 angles subacute, slightly piceous, acutely carinate, carinas parallel with the 

 lateral edges : scutellum sparsely punctured : elytra punctate-striate, the 

 interstices subconvex, distantly and very finely punctured, and transversely 

 rugulose ; sides strongly narrowed from the base to the apex, which is 

 acutely rounded : feet rufous. 



5. C. parumpnnclatus. Castaneous ; thorax subquadrate, distantly punc- 

 tured ; feet dull rufous — 5| 1. long, 1| 1. wide. Pennsylvania. 



Chestnut-brown, sparsely pubescent : head feebly convex, with large, 

 dilated punctures ; clypeus at tip margined, obtusely rounded and slightly 

 elevated : antennae filiform, longer than the thorax, yellowish-testaceous : 

 thorax subquadrate, with the sides rectilinear from the tip of the hind angles 

 to the middle, thence to the apex gradually arcuated; moderately convex ; 

 finely, distantly and subregularly punctured, glossy ; posterior angles short, 

 subacute and prominently carinate, with the carinae long, subparallel with 

 the exterior edge ; dorsal line only obvious behind the middle : scutel sparsely 



18 



