422 [June 



and thicker than the third, joints 5 — 10 subequal, the two penultimate 

 joints equal, oblong-ovate, apex obtuse, acuminate ; slightly pilose, tes- 

 taceous, the base yellowish. Head blackish, shining, the front with an 

 impressed puncture on either side close to the eye; mouth testaceous. 

 Eyes large. Thorax a little narrower than the elytra, twice shorter 

 than broad; the base slightly, and the sides very slightly margined; 

 apex truncate; anterior angles somewhat straight, a little deflexed. 

 posterior angles obtuse ; rather convex or subdepressed, the disk with 

 sparse punctures; testaceous, shining. Elytra half again as long as the 

 thorax, subdepressed, either with fine scattered punctures, or densely 

 and finely granulated, with thin, sparse, grey pubescence; testaceous, 

 apex fuscous. Abdomen black ; the base above broadly, beneath nar- 

 rowly, testaceous. Pectus black. Legs testaceous. 



Head rather larger, the front less depressed, and the eyes larger and 

 more convex than in G. vinula. — Erichson. 



3. Gyrophaena flavicornis, Mels. 



Gyrophcena fiavicornis, Mels. Proc. Acad. Nat. Sci. ii, p. 31. 



Oval, depressed; antennae, palpi, elytra, feet and terguni, testaceous; 

 head, thorax, exterior posterior angles of the elytra, and a fascia on the 

 terguin, black. Length 1 line. 



Hab. — Pennsylvania. 



Head slightly narrower than the thorax, faintly longitudinally in- 

 dented each side between the antennae, minutely and sparsely punc- 

 tured, blackish-piceous : antennas somewhat shorter than the thorax; 

 4 — 10 joints of equal thickness; testaceous: thorax narrower than the 

 elytra, subtransverse-oval, distinctly marginate, minutely though more 

 densely punctured than the head, color of the head, with the margins 

 narrowly but distinctly testaceous: elytra nearly double as wide as long, 

 very minutely and sparsely punctured, testaceous or rufo-testaceous, 

 with the outer posterior angles, black, sometimes testaceous : terguni 

 flat, pubescent, very minutely, almost invisibly punctured, testaceous, 

 with the fifth and part of the sixth segment, transversely black : feet 

 testaceous : postpectus brown. 



Var. — Tergum black. 



Resembles much G. fasciata Say [vinula Er.], but that species is 

 more distinctly punctured, and has its thorax always testaceous. — Mels* 

 heimer. 



4. Gyrophaena geniculata, Miiklin. 



Gyrophcena geniculata, Makl. Mann. Bull. Soc. Mosc. 1853, ii, p. 184. 

 Black, shining, finely and densely punctured; base of antenuaj and 



