THE MINUTE BROWN SCAVENGER BEETLES. 653 



H. hunzci Aube, dull reddish-yellow, 1-1.2 mm. in length, eyes 

 larger, distant by onlj- half their diameter from the antennae, tho- 

 rax with small discal fovea, is recorded from New York and Cali- 

 fornia. 



Tribe II. LATHBIDIINI. 



In addition to characters given in above key, the members of 

 this tribe have the thorax with pronounced sculpture, often eos- 

 tate, and usually with impressions or fovefe, the side margins vnth- 

 out teeth but often lightly crenulate ; elytra each with six or eight 

 rows of punctures, the intervals often more strongly elevated ; front 

 eoxffi distinctly separated, and abdomen composed of five segments 

 in both sexes. Eight genera are recognized as composing the tribe, 

 four of which should be represented in Indiana, though specimens 

 of but three have as yet been taken. 



KEY TO INDIANA GENEBA OF LATHBIDIINI. 



o. Disk of thorax marked with eostse or ridges; eyes on sides of head; 



elytra not connate. 



6. Prosternum not reaching the hind border of the prothorax, the epi- 



mera uniting on the median line. I. Lathbidius. 



66. Prosternum reaching the hind margin of the prothorax and thus 



separating the epimera. Coninomus. 



aa. Disk of thorax without costse. 



c. Eyes large, not very distant from antennae; scutellum distinct. 



II. Enicmus. 



cc. Eyes small or minute, remote from antennae; scutellum indistinct; 



middle coxse separated. III. Cabtodeeb. 



I. Lathridius Herbst. 1793. (Gr., "secret or hidden. ") 



Small, glabrous, shining brown species, having the front angles 

 of thorax more or less lobed and the sides sinuately convergent to 

 a point near the middle, thence divergent to base. Elytra fully 

 twice as wide as thorax, broadly ovate with the apex somewhat 

 pointed. Seven species are recognized by Pall as belonging to the 

 North American fauna. Of these one occurs in the eastern United 

 States and Indiana, while another, brevidavus Fall, known by the 

 2-,iointed club of antennse. was described from ]\Iichigan and may 

 inhabit the northern part of the State. 



:250 (3779). Lathbidius meatus Lee, X. Spec. N. Amer. Col., I, 1863, 72. 

 Oblong. Dark reddish or chestnut brown, shining ; legs and antennae 

 slightly paler. Antennae reaching hind angles of thorax, rather slender. 

 Thorax a little longer than wide, margin reflexed; disk with two entire 

 longitudinal ridges which are nearly parallel on basal two-thirds, diverging 



