1S65.] 423 



joints of the tarsi, testaceous; anus piceous; thorax narrowly margined 

 at baj-e. occasionally impressed on each side before the scutellum. 

 Length | — 1 line ; breadth rather more than i line. 



Hah. — Insula Chtagaluk [Russian America!] — Mannerhcim. 



"». Gyrophaena corruscula, Erich. 



Gh/rophcEna'corruscula, Erich. Staph, p. 189. 13. 



Black, shining; antennae and legs testaceous; elytra and base of ab- 

 domen piceous ; thorax obsoletely and very finely punctured ; elytra 

 sparsely and obsoletely punctured. Length h — f line. 



Hah. — Carolina. 



Black, shining. Antennas a little longer than the head and thorax, 

 rather stout, second joint large, the first subequal, the third one-half 

 shorter, thicker, obconic, joints 5 — 10 equal, long and thick, the last 

 joint more than half again as long as the preceding, apex acuminate ; 

 testaceous, base yellow. Head rather narrower than the thorax, smooth, 

 glabrous, the front even, sparsely punctured on either side; mouth tes- 

 taceous. Thorax a little narrower than the elytra, more than twice 

 shorter than broad, the base and sides slightly rounded, the apex sub- 

 emarginate, anterior angles somewhat straight, slightly deflexed, pos- 

 terior angles obtuse ; slightly transversely convex, the base finely mar- 

 gined, the disk very finely and obsoletely punctured, very smooth. 

 Elytra half again as long as the thorax, subdepressed, sparsely, obso- 

 letely and finely punctured, the interstices very smooth, with very short 

 and fine, scattered hairs; piceous, shining, the sides blackish, paler at 

 the humeri. Abdomen rather thick, smooth, black, the base piceous. 

 Legs testaceous. 



Male. — Second dorsal segment of the abdomen with a minute, rather 

 acute tubercle on the middle of the posterior margin ; fifth segment 

 with two slightly distant tubercles before the apex ; sixth segment with 

 two obsolete approximate tubercles on the middle. — Erichson. 



6. Gyrophaena socia, Erich. 



Gyrophazna socia, Erich. Staph, p. 189. 14. 



Black, shining; antennae and legs testaceous; elytra and base of 

 abdomen, piceous; thorax with fine scattered punctures on either side ; 

 elytra densely punctured. Length \ line. 



Hub. — Carolina. 



Black, shining. Antennae nearly as long as the head and thorax, 

 second joint thickened, the first a little shorter, the third twice smaller, 

 and thinner than the preceding, the fourth shorter than the third and 



