COLEOPTERA. 87 



Elytral suture much longer than the pronotum ; head much narrower. 



Prothorax distinctly longer than wide 78. auimatus. 



Prothorax as wide as long ; sides very strongly and nearly evenly 



arcuate 79. turn icollis. 



Transverse carinae of abdomen not cusped. 



Prothorax having throughout its basal half a narrow, elevated, longitu- 

 dinal carina. Lake Superior SO. carinicollis. 



Prothorax without carina. Colorado 81. insigllis. 



66. S. Virginia? n. sp. — Form rather robust, sides parallel. Pubescence 

 rather long, coarse, moderately abundant, semi-erect, pale fulvous on the 

 abdomen, cinereous on the remainder of the upper surface. Head robust, 

 rather large, twice as wide as long ; interocular surface distinctly depressed, 

 barely twice as wide as the eye ; equally trilobed by the sulcations, which 

 are rather deep and prominent ; intermediate surface evenly and strongly 

 convex; punctures deep, round, evenly distributed and moderately close; 

 interspaces nearly one-half as wide as the punctures, somewhat convex, finely 

 reticulated and feebly lustrous ; ocular lines meeting at one and one-half 

 lengths in advance ; second joint of antennae longer and more slender than 

 the first ; maxillary palpi slender, third joint piceous-black, densely clothed 

 with short cinereous pubescence, scarcely longer than the second, first and 

 second joints very dark piceo- testaceous, paler at their distal extremities. 

 Prothorax large, widest slightly before the middle, where it is more tjian 

 five-sixths as wide as the head, and one-sixth narrower than long: sides 

 thence very moderately convergent posteriorly and strongly sinuate ; anterior 

 margin slightly longer and more arcuate than the posterior : surface strongly 

 tnberculate at a short distance from each basal angle ; rather finely, deeply, 

 very closely, and extremely confusedly punctate, interspaces very feebly 

 lustrous. Elytra at base slightly narrower than the head ; sides very 

 strongly divergent posteriorly, as long as the width at base, very strongly 

 and evenly arcuate; together very broadly, roundly, and strongly emargi- 

 nate behind ; suture equal in length to the pronotum ; surface convex, feebly 

 impressed on the suture at the base, somewhat coarsely and closely, deeply, 

 and very irregularly punctured and channeled ; interspaces minutely granu- 

 lose or scabrous, very feebly lustrous. Abdominal segments decreasing 

 uniformly and just perceptibly in width, first distinctly narrower than the 

 contiguous elytra ; surface coarsely, feebly, sub-variolately punctulate, punc- 

 tures very close toward the borders, less crowded toward the median line, 

 interspaces shining ; transverse carinae arcuate posteriorly, 4-cuspid, cusps 

 all small, coarsely acuminate, somewhat rudimentary. Legs moderate, 

 slender, piceous-black above, dark piceo-fnscous beneath and toward the 

 tips of the tibiae, tarsi slender; first joint of the posterior tarsi scarcely 

 more than one-third longer, than the second, slightly shorter than the fifth, 

 second somewhat shorter than the third and fourth together. 



Male. — Unknown. 



Female. — Sixth ventral segment very broad and evenly rounded behind. 



Length 4.0 mm. 



Pennington Gap, Virginia, 1. 



