460 BULLETIN UNITED STA.TES GEOLOGICAL SURVEY. 



by four of these cicatrices, is more finely punctured, and slightly carinate. 

 Elytra with the depressed parts densely punctured : basal fossae deep ; 

 the inner costa extends from the fossa to the tip, and is not sinuousj the 

 2d costa is irregular, less elevated just in front of the middle, and inter- 

 rupted behind the middle; the 3d is short, as usual, occupying about the 

 middle third of the length ; the 4th arises in the margin behind the 

 humerus and unites with the 2d near the tip; margin serrate from the 

 middle to the tips, which are separately rounded. Beneath shining green- 

 bronzed, sparsely punctured. Length 12.5°'™ (0.5 inch); 



$ Head tinged with dull yellowish-green metallic lustre; 5th ventral 

 segment strongly emarginate. 



American Fork Canon, Utah, (9,500 feet) ; allied to C. dentipes, but 

 differs by the venation of the elytra, and by the much deeper emargina- 

 tion of the 5th ventral segment in the $ ; and also by the under surface 

 being bright green. The middle and front tibise are not armed with 

 teeth. 



ELATERID^. 



31. CORYMBITES PLANULUS, W. Sp. 



Elongate, depressed, black, thinly clothed with fine, short, gray pubes- 

 cence. Head punctured, front slightly concave. Prothorax longer than 

 wide, rounded on the sides, narrowed in front of the middle; hind angles 

 acute, divergent, finely carinate; disc densely and finely punctured, not 

 convex except towards the sides ; dorsal line wanting. Elytra not wider 

 than the prothorax, disc flat, sides declivous, lateral margin broadly 

 reflexed ; striae fine punctured, interspaces nearly flat, finely punctured. 

 Antennae longer than the head and prothorax, rather strongly serrate ; 

 2d and 3d joints not dilated, together a little longer than the 4th ; 3d 

 one-half longer than the 2d. Antennae, palpi, and legs brown or red- 

 brown. Length 10°^°^ (0.40 inch). 



Beaver Brook, Col., (6,000 feet); Northern New Mexico, Lieutenant 

 Carpenter. Belongs to the same group as C. triundulatus, &c., but is 

 very distinct by the dark color and more evidently punctured prothorax, 

 as well as by the more depressed form of body. 



LAMPTRIDJ3: subf. TELEPHORIDJS. 



32. PODABRUS BREVIPENNIS, n. sp. 



Eather robust in form, black, thinly clothed with fine gray pubescence. 

 Head as wide as the prothorax, densely finely punctured, eyes small, 

 convex; mandibles and 1st joint of antennae brown. Antennae ( 2 ) a 

 little longer than the head and prothorax, rather stout, outer joints nar- 

 rower, 3d a little longer than the 2d, but shorter than the 4th, prothorax 

 one-half wider than long, sides straight and parallel, rounded only near 

 the front angles, which are testaceous ; hind angles rectangular, slightly 

 prominent, base truncate ; disk finely punctured with two large, shining, 

 nearly smooth convexities, and well-marked dorsal line; side-margin 



