392 



FAMILY XI. — STAPH YLINIDJE. 



./'. Apex of elytra with narrow pale border. 7U1. p.ederoides. 



jj. Elytra uniform in color, more elongate. 762. jocosus. 



ii. Abdomen very sparsely punctured, more strongly shining ; head and 

 thorax with numerous punctures. 

 Jc. Meta thorax nearly black; elytra widely dull yellow at tips. 



TERMINALIS. 



7>;7f. Metathorax reddish ; elytra narrowly bordered with paler at tips. 



UMBRIPENNIS. 



755 (2235). Actobius cinerascens Gray., Mon. Col. Micr., 1806, 49. 



Elongate, slender. Head and thorax black; elytra and abdomen pic- 

 eous, opaque ; legs dusky yellow, the tibiae and tarsi darker ; antennae brown- 

 ish, paler at base and tip, shorter than head and thorax, the joints all 

 longer than wide. Thorax not wider than head, very little longer than 

 wide, sides sinuate ; disk rather closely and coarsely punctate, with a nar- 

 row smooth space at middle. Elytra slightly broader than thorax, together 

 one-third longer than wide ; surface, as well as that of abdomen, densely 

 and finely punctate. Length 4-5 mm. 



Marshall and Putnam counties; frequent. April 17-October 

 17. Taken by sifting damp vegetable debris. 



756 (2236). Actobius nanus Horn, Trans. Amer. Ent. Soc, XI. 1884, 225. 



Elongate, slender. Head and thorax black, shining; elytra and ab- 

 domen piceous. subopaque; antenme and legs dusky yellow. Head coarsely 

 and sparsely punctate above, more finely and closely beneath. Thorax not 

 wider than head, sides sinuate ; disk sparsely and coarsely punctate on 

 sides, with a broad median smooth space. Elytra slightly wider and one- 

 third longer than thorax ; surface, as well as that of abdomen, densely ami 

 finely punctate. Length 4.5 mm. 



Steuben and Posey counties ;* rare. April 21 -May 25. Taken 

 by sifting. Shorter and slightly stouter than cinerascens, with the 

 head and thorax much more coarsely and sparsely punctate. 



757 (2238). Actobius fbaterculus Horn, Trans. Amer. Ent. Soc, XI, 1884. 



226. 



Elongate, very slender, parallel. Head and thorax black, shining; ely- 

 tra, and abdomen brownish-piceous, subopaque; antenna? and legs pale 

 brown, the former shorter than head and thorax, joints 8-10 as long as 

 wide. Head subquadrate. sparsely and coarsely punctured above, more 

 densely beneath. Thorax not wider than head, one-third longer than wide, 

 very little narrowed behind ; disk coarsely and sparsely punctate, with a 

 rather broad, median smooth space. Elytra slightly wider and one-third 

 longer than thorax; surface, as well as that of abdomen, rather finely and 

 densely punctate. Length 3.5 mm. 



Marion County; rare. May 30. Taken from beneath bark of 

 butternut. 



