COLEOPTERA. 131 



evenly and sparsely punctate ; punctures circular, sub-variolate, strong, 

 generally separated by about three times their widths in the middle, sliglitly 

 closer toward the sides where the surface becomes slightly rugulose : imme- 

 diately behind the eye in a line parallel with its rather truncate and oblique 

 hind margin, and at a distance from it more than equal to its length, there 

 are two large round crater-like setigerous punctures, very distinct from the 

 mass of punctures about them ; under surface rugulose, shining, sparsely 

 and finely punctate ; maxillary palpi long, all the joints slightly flattened, 

 second scarcely as long as the third, arcuate, gradually widening toward tip 

 which is obliquely truncate, third conical, gradually narrowed toward base, 

 truncate at tip, three times as long as wide, fourth very small, flattened, 

 conical, oblique, two-thirds as wide at base as the tip of the third and nearly 

 as wide as long, not one-fourth as long as the third joint ; inner tooth of 

 mandibles very long, arcuate, strong ; antennae much longer than the head, 

 slender, basal joint much the most robust, as long as the next three together, 

 second two-thirds as long as the third, as long as the fourth, joints four to 

 eight increasing slightly in length, eight to ten decreasing rapidly in length, 

 eleventh very slightly longer than the tenth. Prothorax two-thirds as long 

 and nearly five-sixths as wide as the head ; sides feebly convergent from 

 apex to base and feebly arcuate ; apex broadly and very feebly emarginate ; 

 angles slightly acute and very slightly rounded ; base transverse, angles 

 broadly rounded ; disk polished, one-sixth longer than wide, rather coarsely 

 closely and irregularly punctate, more irregularly and sparsely so laterally; 

 median impunctate area even. Elytra very long, one-third longer than the 

 pronotum, about as wide as the head ; sides nearly parallel, very feebly 

 arcuate near the middle ; together broadly roundly and rather strongly 

 sinuate behind ; angles broadly rounded ; disk nearly one-third longer than 

 wide, depressed, extremely highly polished, coarsely evenly and densely 

 punctate, interspaces one and one-half times as wide as the punctures, con- 

 vex. Abdomen very slightly narrower than the elytra ; sides parallel and 

 straight ; border very strong, deejj, strongly inclined, equal throughout the 

 first four segments ; surface finely rather sparsely and evenly punctate, also 

 coarsely and distinctly strigato-reticulate, shining ; under surface like the 

 upper, bristling with long erect black setae toward the tip. Legs long and 

 slender ; first joint of the posterior tarsi one-third longer than the second, 

 slightly shorter than the last ; femora much paler than the tibiae and tarsi. 

 Gular support of the mentum and scutellum each having two small setigerous 

 punctures in the middle of the disk and transversely disposed. 



Female. — Second ventral segment having just behind the middle a short 

 transverse and feeble fold, one-sixth as long as the width of the segment, 

 straight and densely fimbriate with slender black setae ; third segment 

 having just before the middle a short transverse and very feeble fold similar 

 to the first, except that it is not one-half as long ; sixth segment very broadly 

 rounded behind. 



Length 9.5 mm. 



Pennsylvania, near Philadelphia, 1. 



The two areolate punctures behind the eyes appear to characterize 

 the genus or a large portion of it. I do not see any group made by 



