208 Trans. Acad. Set. of St. Louis. 



long as the next two combined; sixth ventral with a very minute, rather 

 ■hallow median sinus at tip; female not observed but having the prono- 

 tum deeply concave along the middle. Leiigth 1.9 mm. ; width 0.48 mm. 

 Massachusetts cayicollis Lee. 



Color black, the elytra picescent but only feebly, indefinitely paler toward 

 tip, the two basal ventrals rufescent; vestiture fine, close and rather dis- 

 tinct; head orbicular, not impressed, minutely punctulate and reticulate; 

 antennae as in cavicollis but rather more incrassate distally, the subapi- 

 cal joints not as long as wide; prothorax barely a fifth wider than long, 

 slightly though very evidently wider than the head as in cavicollis, mi- 

 nutely reticulate and dull, very minutely, closely punciulate, feebly so 

 toward the middle, more coarsely and asperately toward the sides, the 

 surface not impressed but only feebly flattened along the median line; 

 elytra nearly as long as wide, a fourth wider and one-third longer than 

 the prothorax, the humeri but slightly exposed, the surface polished, 

 with less minute, sparser and more asperate punctures as usual, the 

 suture minutely and feebly impressed behind the scutellum; tarsi very 

 slender and filiform, the first joint of the posterior not quite as long as 

 the next two combined; female with the sixth ventral rounded at tip; 

 male not known. Length 1.9 mm.; width 0.42 mm. North Carolina 

 (Asheville) obsoleta n. sp. 



9 — Lustre shining in the male, pale piceo-lestaceous in color, the head and 

 apical half of the abdomen black; antennae dusky toward tip; punctu- 

 lation very minute, even, feebly granuliform and moderately close-set, 

 asperulate and sparser on theeljtra; pubescence not conspicuous; head 

 rounded, scarcely impressed, the antennae rather short, slender, only 

 slightly incrassate distally, barely as long as the head and prothorax, 

 the second joint distinctly longer than the third, the tenth almost as 

 long as wide; prothorax unusually large and transverse, about a third 

 wider than long and a fourth wider than the head; apex not more than 

 two-thirds as wide as the base, the surface barely perceptibly impressed 

 along the middle from near the base to the centre of the disk; elytra 

 nearly as long as wide, a fourth wider and nearly one-half longer than 

 the prothorax, the humeri very narrowly exposed, the apex barely per- 

 ceptibly paler in shade of color; tarsi very slender, the first joint of the 

 posterior not quite as long as the next two together; sixth ventral with 

 a very small but pronounced rounded sinus, about a fourth as wide as 

 the segmental apex; female not at hand. Length 2.1 mm.; width 0.5 



mm. Pennsylvania parriceps n. sp. 



Lustre of the head and pronotum dull in the female, elsewhere shining, 

 piceous-black in color, the elytra less blackish, with a very narrow pale 

 apical margin; two basal ventrals feebly rufescent; antennae red- 

 brown, yellow toward base; punctures of the head and pronotum ex- 

 tremely minute, moderately close-set, of the elytra stronger and asper- 

 ate; vestiture moderately distinct; head rounded, feebly impressed 

 along the middle; antennae much longer than in parviceps or cavicollis 

 and gradually, more distinetly incrassate distally, attaining basal third 

 of the elytra, the second joint much elongated, slightly longer than the 

 first or third, the tenth almost as long as wide ; prothorax large but less 

 transverse, about a fourth wider than long, finely reticulate and feebly 



