1865.] 415 



■tines, the sides broadly reflexed, posterior angles acute, obliquely pro- 

 duced ; elytra not densely, but finely punctured ; abdomen smooth above. 

 Length .20— .23 inch. 



Hah. — Massachusetts, Pennsylvania, Illinois; rare. I have never 

 found this species, and do not know with what species of ant it lives. — 

 LfiConte. 



B. — All the tarsi 5-jointed. 



s Palpi with a small additional terminal joint. 



Genus 12.— ALEOCHARA, Grav. 



1. Aleochara valida. Lee. 



Aleochara valida, Lee. Journ. Acad. Nat. Sci. 2d ser. iv, p. 16, pi. iv, fig. lfi 

 Of a dull black color, above finely granulate, without lustre except 

 on the abdomen. Head sparsely punctured, thinly clothed with short 

 suberect hair, obtusely pointed anteriorly, eyes oblong, not prominent; 

 antennae as long as the head and thorax, third joint a little longer than 

 the second, fourth only half the length of the third, 5 — 10 transverse, 

 gradually a little broader, sparsely pilose with verticillate hairs, eleventh 

 longer and narrower than the preceding, conical, obtusely rounded at 

 tip. Thorax a little broader than long, transversely slightly convex, 

 anteriorly broadly emarginate, sides and base curved with a circular 

 outline, anterior angles rounded, slightly deflexed, finely not densely 

 punctured, covered with short erect black hair. Elytra shorter than 

 the thorax, punctured and hairy like it, flattened, truncate, with the 

 outer angle rectangular and rounded. Abdomen above shining, sparsely 

 pubescent and punctured, parallel on the sides, obtusely rounded at the 

 tip ; anterior segments transversely impressed and smooth towards the 

 base ; sides strongly reflexed, pilose, with longer black hairs ; anus 

 sanguineous. Body beneath densely punctured and pubescent with 

 blackish-brown hair. Length .19 — .27 inch. 



Hah. — San Diego, California, under decomposing Opuntia stems. 

 Varies much in size, but usually larger than any other species of the 

 genus, and having a peculiar habit. I was at first inclined to regard 

 it as a new genus, but after a patient examination and dissection failed 

 to find any character by which it might be separated. — LeConte. 



2. Aleochara fuscipes. Fabr. 



Staphi/linus fuscipes, Fabr. Syst. Ent. p. 266. 12 ; Spec. Ins. i, p. 336. 15 ; 



Mant. Ins. i, p. 221. 22: Ent. Syst. ii, p. 527. 38; Syst. Eleuth. ii, p. 598. 



47. Payk. Faun. Suec. iii, p. 397. 39. Schrank, Faun. Boic. i, p. 645. 845. 



Walk. Faun. Ent. Paris, i, p. 271. 13. Cederh. Faun. Ingr. p. 119. 364. 



Marsh. Ent. Britt. p. 525. 77. 

 Staphylinus brachypterus, Fourc. Ent. Par. i, p. 167. 12. 

 Aleochara fuscipes, Grav. Micr. p. 92. 36; Mon. p. 170. 56. Latr. Hist. Nat. 



