426 



FAMILY XT. STAPHYLINID2E. 



814 ( ). Lathkobium semiruber Casey, Trans. Acad. Sci. St. L., XV, 



1905, 107. 



Elongate, rather slender, nearly parallel. Black ; thorax and elytra 

 dark dull reddish, the elytra clouded with blackish toward the base; an- 

 tenme piceous, paler at base ; legs dull yellow. Head orbicular, finely and 

 sparsely punctate ; antennae slender, reaching middle of elytra. Thorax ob- 

 long, distinctly wider than head, coarsely, rather sparsely and unevenly 

 punctate. Elytra one-fourth wider but very slightly longer than thorax, 

 coarsely, rather closely and roughly punctate. Abdomen as wide as elytra, 

 finely and densely punctate. Males with fourth and fifth ventrals feebly 

 flattened, sixth with a minute median notch, deeper than wide, and nar- 

 rower than in punctulatum, almost concealed by dense hairs. Length 7- 

 7.5 mm. 



Putnam County; rare. October 17. Taken by sifting damp 

 vegetable debris. Described from Iowa. 



L. angular e Lee., 7-7.8 mm., and L. nigrum Lec., 5-5.8 mm. in 

 length, both have a range which favors their occurrence in the State. 

 The latter is a boreal species, known from Massachusetts, Michigan 

 and Wisconsin. 



Group E. (Pseudolathra.) 



Small, slender, subdepressed species having the head small, 

 broadly rounded and subtruncate at base; maxillary palpi short and 

 stout; gular sutures widely separated and strongly divergent; an- 

 tenna? reaching middle of elytra, rather stout, the joints obconic; 

 neck half as wide as head ; thorax with median smooth area, defined 

 by impressed rows of punctures. The two known species occur in 

 the State. 



815 (2540). Lathrobium anale Lec, Trans. Amer. Ent. Soc, VIII, 1880, 



177. 



Elongate, very slender. Head black ; antenna?, thorax and elytra pale 

 reddish-brown, shining; legs yellow; abdomen piceous, paler at apex. Head 

 rather coarsely and very sparsely punctate. Thorax as wide or wider than 

 head, slightly longer than wide; sides straight, feebly converging from apex 

 to base, disk with a row of close set punctures each side of median line, 

 those on sides few and finer. Elytra slightly wider and but little longer 

 than thorax, with rows of very fine, shallow, indistinct punctures, confused 

 near tips. Abdomen a little narrower at base than elytra, minutely and 

 very densely punctate. Sixth ventral of male with a small triangular 

 notch. Length 3.4-3.7 mm. 



Lake, Dubois and Posey counties; scarce. April 21-May 19. 

 Sifted from damp vegetable debris. 



816 ( ). Lathrobium LuSwiceps Casey, Trans. Acad. Sci. St. L., XV, 



1905, 129. 



Slender, subparallel. Dark piceous; head black; antenna? and legs dull 

 reddish-brown, Head rather coarsely and sparsely punctate, Thorax oh- 



