-170 FAMILY \r. sTAriiY 



fV/.sv//. "A Preliminary Monograph of the North American 

 Species of Trogophlceus, " in Ann. N. Y. Acad. Sci., IV, 

 1889, 322-383. 



The following species have been taken or perhaps occur in the 

 State. 



KEY TO INDIANA SPECIES OF TROGOPHLCEUS. 



it. Thorax with a deep transverse curved or lunate groove near the base. 



It. Color dark reddish-brown: legs pale. 908. ARCIFER. 



lih. Color black; legs and antenna' black; thorax widest before the mid- 

 dle. ANTHRACINUS. 

 tin. Thorax without a curved groove near base, but usually with a length- 

 wise groove on basal half each side of a slightly raised median line. 

 c. Eyes large, convex and prominent, the distance from their hind mar- 

 gin, to base of head less than one-third their diameter. 

 <1. Thorax subhexagonal, widest one-third behind apex, the sides 

 thence converging and nearly straight to base; its disk broadly 

 impressed on side ; length 3-3.2 mm. 909. QUADRIPUNCTATUS. 

 dd. Thorax rounded in front, widest just in front of middle, sides 

 thence converging to base; disk not flattened on the sides; length 

 2.5 mm. 910. MEMNONITJS. 

 cc. Eyes small, much less prominent, the distance from their hind mar- 

 gin to base nearly as long as or longer than the eyes. 

 e. Elytra chestnut brown or paler. 



f. Larger, 2.6 mm. ; thorax coarsely and sparsely punctate. 



PHIXEOPORINUS. 

 /'/. Smaller, not over 2 mm. ; thorax densely and finely punctate. 



911. POSEYENSIS. 

 cc. Elytra black or piceous. 



(j. Elytra distinctly longer than thorax; surface not opaque; an- 

 tennae shorter than head and thorax ; length 1.8-2 mm. 



912. AGONUS. 



gg. Elytra not longer than thorax ; surface strongly granulate and 

 opaque ; length .6 mm. BRACHYPTERUS. 



90S (2770). TROGOPHLCEUS ARCIFER Lee., Trans. Amer. Phil. Soc., VI, 1877. 



245. 



Elongate, rather robust, convex. Uniform dark reddish-brown ; legs 

 and antennae slightly paler. Head three-fourths as wide as thorax, coarsely, 

 deeply and rather sparsely punctate. Antenna? longer than head and tho- 

 rn x. the outer joints thickened. Thorax one-half wider than long, widest 

 just in front of middle, the sides thence curving to base; disk coarsely, 

 deeply and rather closely punctate. Elytra one-third wider and one-half 

 longer than thorax, coarsely but not densely punctate. Abdomen almost 

 as wide as elytra, rather finely and sparsely punctured. Length 2.8 mm. 



Fountain County ; rare. August 17. The specimen at hand has 

 thi 1 legs, atilemia- and abdomen but slightly paler than elytra; other- 

 wise il, agrees with Ihe description of the type. 



