Till': MIXITl-; liKoWX SCAVKNOKU IU-;KTTjES. 



r.rii 



iii;ii-f,'ius very liiu'ly crt'imliite. hind iiiiixlos with n dislinct donlu-le ; surface 

 sparsoly aiid liiicly iniiiclate, tlie basal fovea a little transverse and soiue- 

 what shallow. Klylra elongate. tii)s broadly triiueate, exposing the tip of 

 iiiidouien in male; punctures of stria' rather coarse. Length 1.5-l.S nun. 



I'utiuHii Coiiiity; scarce. Taken by siftiiit!: dead leaves. Ai)i-il 

 22. 



ILMiS (3S10). MKi.ANoni 1 iiAiMA amkukana .Mann.. Cerni. Zeilschr., V, HO. 

 Resembles the next species but more el(lnl,^•lle and usually jtaler in 

 color. lOlytra widest at middle in both sexes, and longer in iiroportion to 

 leuj:th of ihorax; the latlei' more transverse aud more regularly rounded 

 at the sides, with the basal fovea less deeply imi)ressed. Length 1.5 1.8 nun. 



:\rarioii and Posoy comities; scarce. JMarcli 2()-]\ray 11. Widely 

 distributed throuulicut the United States and probably occurs 

 throughout the State. 



*1269 (3S18). Melanophthalma cavicoli.is Maun., loc. cit., p. 57. 



Short, ovate, convex. Color variable, but usually with head and tho- 

 rax dull reddish-brown, the elytra darker sooty brown; tip of abdomen, 

 legs ;ind base of antennje paler; pubescence rather short, recumbent. Tho- 

 rax transverse, subcordate. strongly rounded in front; hind angles ending 

 in a distinct denticle; surface evenly aud rather finely punctate; basal 

 fovea rounded, deeii. Elytra rather broadly ovate, base but slightly wider 

 thai\ that of thorax, tips rounded; striai but slightly impressed, the punc- 

 tures moderate, those of intervals liner. Length 1.2-1.5 mm. 



Throughout the State; frequent. Hibernates. March 20-De- 

 cember 2'A. Taken by sii'linir in early spring and beneath logs in 

 winter. 



Family XXVIII. TROGOSITID.1^1 



The Grain and Baric-gnawing Beetles. 



A family of small size, which includes medium or small oblong 

 or oval, usually somewhat flattened beetles of a black or reddish- 

 1)lack hue which live, for the most part, under bark, though some 

 inhabit granaries and have beeti widely distributed by commerce. 

 They have the nuixilla^ 21obed, the inner lobe sometimes very small; 

 antenna- short, ll-joiiited. inserted under the margin of the front, 

 the last three .pints widest, forming a loovse cltib of varied form; 

 thorax with its hind margin not overlaj^ping the base of elytra; the 

 latter never tniiu-ate. always covering the ab.domen, which is com- 

 posed of five free ventral segments; front coxa; transverse, sepa- 

 rated by the prosternum, the cavities usually closed behind; middle 

 and hind coxa' transverse, flat, the former sei)aratcd. the latter 

 contiguous; tarsi r)-jointed, not dilated, first joint very short, second 

 slightly longer, tVnu-th very long; claws simple. 



