COLEOPTKUA. 79 



Legs rather long and slender ; fourth joints of the anterior and middle tarsi 

 strongly hilobed ; first joint of the posterior tarsi scarcely as long as the next 

 two together. Abdomen strongly convex ; terminal segment very broadly 

 rounded at tij>, where there are four equal widely distant setae. Length 

 3.8-4.2 mm. 



Pennsylvania, near Philadclpliia, 2. 



Somewhat ix'sembles conjnnctus Say, but is more elongated, and 

 the pronotum is very much less transverse ; it is also black, while in 

 the species referred to the prothorax is invariably rufo-piceous or 

 rufous; it also re^^embles rotandatus Lee, but the pronotum and 

 elytra are not margined witli brown, the former is distinctly wider 

 tlian long, and its basal impressions are not punctiform. 



BRADYCELLUS Erichs. 



In Dr. LeConte's table of this genus (Proc. Acad. Nat. Sci. 1868, 

 p. 381), this author states that B. paraUelus appears to him to be 

 a race of i-npestris. I have before me a specimen which is more 

 elongate tlian rupestris, and in which the pronotum is relatively more 

 transverse ; the color is nearly uniformly piceous. If this be the 

 paraUelus above alluded to — and I have scarcely any doubt of it — 

 there can be no question of the validity of the latter. Besides the 

 differences noted, the emargination of the mentum is strikingly 

 different in the two species, being very broad and shallow in rupes- 

 tris, and much deeper in paraUelus. In both these species the second 

 joint of the labial palpi is distinctly shorter than the third. 



GLYCERINS n. gen. 



This genus is founded upon a peculiar species hitherto associated 

 with Acu|)alpus, Bradycellus, and Tacl)ycellus in succession. It 

 differs from them in the following characters, and stands, perhaps, 

 properly between the last two. 



Prothorax having along the sides of the disk near the edge a row of many 

 erect stiff bristles, becoming more distant toward the posterior angles. 

 Scutellum very short and broad, scarcely entering the elytral disk behind 

 the basal carina. Disk of elytra perfectly smooth, with scarcely any trace of 

 striae except a single well-marked sutural stria. Third joint of the antennae 

 scarcely pubescent, but having numerous stiff setae ; epistoma having two 

 prominent setigerous punctures at each anterior angle. 



The remaining characters are nearly those of the above-mentioned 

 genera, but the many setae of the pronotum appears to be a character 

 of generic importance. Our single species is — 



G. nitidus (Dej.).— Spec. IV. p. 474. 



