THE GEAIN AND BARK-GNAWING BEETLES. 665 



well as those of head, rftther fine and sparse. Elytra twice as long as wide, 

 slightly broader behind the midclle, intervals subconvex, each with two rows 

 of distinct punctures. Length G mm. 



Vigo County; rare. February 14. 



*1274 (3843). Tenebkoides ambeicana Kirby, Faun. Bor. Amer., 1837, 166. 



Oblong, moderately depressed. Black or piceous, shining; under sur- 

 face and legs dark reddish-brown. Head and thorax finely alutaceous, 

 rather sparsely and finely punctate ; the latter two-thirds wider than long, 

 the margins reflexed, sides sinuate near base, hind angles acute. Elytra 

 elongate-oval, the strise shallow and rather finely punctate ; intervals slightly 

 convex, densely and distinctly rugulose, each with two rows of fine punc- 

 tures. Length 9-10 mm. 



Throughout the State, frequent; more so in the southern half. 

 February 4r-September 5. Gregarious in winter. This is the spe- 

 cies usually listed as castmiea, Kirby 's name having priority. 



1275 (3843a). Tenebeoides laticollis Horn, Proc. Phil. Acad. Nat. Sci., 

 1862, 86. 



Form of americana. Dark reddish-brown to piceous. Thorax twice as 

 wide as long, strongly depressed; sides feebly curved, not sinuate, hind an- 

 gles more obtuse, less distinct. Elytral intervals very finely rugose. Length 

 7.5-8 mm. 



Posey County; rare. April 27. Listed as a variety of ameri- 

 cana but the much wider and shorter thorax, with smaller hind 

 angles, shows it distinct. 



3276 (3843b). Tenebboides obscxjea Horn, Proc. Phil. Acad. Nat. Sci., 

 1862, 86, 87. 

 Oblong, depressed. Pale brownish-yellow, shining. Head and thorax 

 sparsely and rather coarsely punctate; the latter twice as wide as long, 

 sides feebly curved, but little narrowed behind the middle. Elytra oblong- 

 oval, the strife more strongly impressed and with coarser punctures than 

 in any of the preceding species ; intervals almost flat, very finely punctu- 

 late. Length 5 mm. 



Harrison County; rare. November 14. Usually considered a 

 variety of americana but appears to be very distinct. 



1277 (3845). Tenebeoides bimaculata Melsh., Proc. Phil. Acad. Nat. Sci., 

 II, 1844, 110. 



Oblong, subdepressed. Black, tinged with bronze, shining; elytra each 

 with an irregular yellowish spot slightly in front of middle ; club of an- 

 tennic and tarsi yellowish. Thorax transverse, finely and densely punctate ; 

 sides rounded, margin slightly reflexed. Elytral striae shallow, their punc- 

 tures obsolete on apical third. Length 5 mm. 



