THE SHORT- WINGED SCAYENGEB BEETLES. 



393 



758 (2243). Actobius sobrinus Ericlis., Gen. Spec. Staph.. 1840, 512. 

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



eous, shining; antennae brownish, joints 7-10 as wide as long, the two 

 basal ones and legs pale yellow. Head quadrate, coarsely and rather 

 sparsely punctate on sides and beneath. Thorax not wider than head, 

 coarsely and rather closely punctate except at middle. Elytra described 

 in key. Abdomen sparsely punctate, the segments paler at tip, the first 

 four dorsal ones deeply, transversely impressed at base. Length 4.5- 

 5.5 mm. 



Throughout the State ; frequent. April 9-October 17. Occurs 

 beneath dead leaves and bark. 



759 (2246). Actobius loxatus Horn. Trans. Anier. Ent. Soc, XI, 1884.220. 

 Elongate, broader than in the preceding forms. Head, thorax and ely- 

 tra black, shining; abdomen and legs piceous. the tarsi paler; antennae 

 brownish, shorter than head and thorax, the joints longer than wide. Head 

 subquadrate, with a few coarse punctures along the sides. Thorax not 

 wider than head, nearly as wide as long, punctures coarse, sparse. Elytra 

 wider and slightly longer than thorax, together longer than wide. Abdo- 

 men subopaque. rather densely and finely punctate; the second and third 

 dorsal segments shallowly impressed at base. Length 5-5.5 mm. 



Putnam and Posey counties; frequent. April 22-Oetober 17. 

 Sifted from beneath damp vegetable debris. 



760 (2249). Actobius parous Horn. Trans. Ainer. Ent. Soc. XI. 1884. 234. 

 Slender, subfusiform. Black, shining; elytra and abdomen with a pic- 

 eous tinge; legs dull yellow, the tarsi dusky; antenme brownish, reaching 

 middle of thorax; terminal joints paler, all as wide as long. Head oval, 

 sparsely and coarsely punctate on sides and beneath. Thorax slightly 

 wider than head, very little longer than wide: the punctures each side of 

 the median smooth space arranged in a regular row of seven. Elytra a 

 little wider and longer than thorax, sparsely and coarsely punctate. Ab- 

 domen more finely punctate, the second and third dorsal segments nar- 

 rowly transversely impressed at base. Length 3.5 mm. 



Kosciusko. Starke and Putnam counties; frequent. April 17- 

 October 17. Taken by sifting. 



761 (2251). Actobius p^dekoides Lee. N. Sp. N. Amer. Col., I. 1863, 38. 

 Elongate, slender. Head, meso- and metasterna and tip of abdomen 



black : thorax, base of abdomen and legs yellow : elytra black with a bluish 

 tinge, the tips paler : antenna piceous. three basal joints paler, joints 6-10 

 as wide as long. Head very coarsely punctate, smooth at middle. Thorax 

 oblong, not wider than head, slightly narrower near base : sides distinctly 

 sinuate ; disk coarsely and rather sparsely punctate with a narrow median 

 smooth space. Elytra rather coarsely, not densely punctate. Length 3.5- 

 4.5 mm. 



Throughout the State: scarce. May 19-September 1. Occurs 

 beneath rubbish along the margins of ponds and streams. 



