<'14 FAMir.Y XXV. — histerid.t:. 



in. Tribai.is Erichs. Ls:M. fGr., "worthless.'") 



This jjreiuis conlains two sniiill. dull 1ilaekish. ovate species, hav- 

 ing the antenna inserted under the margin of the front, their 

 cavities at the front angles of thorax open both in front and on 

 sides. One of the two occurs in Indiana. 



1172 (3531). Tribalis amkkicanis Lee, Bost. Journ. N;it. Hist., Y, 1845, 



G4, pi. IV, fig. 7. 

 Broadlj' oval, convex. Black or piceous, feebly shining, densely punc- 

 tured. Thorax without strife. Elytra with four ill-defined dorsal strife, 

 the first and second ai)ical, third and fourth basal. Pygidium and propy- 

 gidium finely and densely punctured, the former vertical. Length 2.3- 

 2.8 mm. 



Southern lialf of Stati'; scarce. April 24— [ui\e 16. Occurs be- 

 neath bark of hickory, black gum and elm. 



IV. Epieris Erichs. 1834. (Clr., "pleasing.") 



Small, oblong-oval forms, easily distinguished from Tribalus by 

 the distinct elytral stria'. As there, the antennal cavity is partly 

 concealed by the pectoral plate and is open in front and on the 

 side. Oiu' two species have all the doi-sal -strife entire. 



1173 (3533). Epiekis hwulakis I'.eauv., Ins., 1805, 180. 



Oblong-oval, convex. P>lack, shining; legs piceous. 'I'lKirax ralher 

 sparsely punctate with larger and smaller punctures intermingled. Elytra 

 each with six entire punctured dorsal stria': intervals sparsely and minutely 

 punctulate; subhumeral entire; epipleural fold coarsely inuictured .ind witli 

 two deep, distinct stria>. Length 2.-5-3 nun. 



Throughout the State; frcMnient. A|)rii !)-Se[)tembcr 10. Oc- 

 curs usually in fnugi. 



*1174 (3535). EpuiKi s pulicakius Erichs., Jahrb., 1834, 162. 



Oval, moderately convex. Dark reddish-brown or piceous, shining- 

 Thorax finely and sparsely punctured. Elytra with six entire dorsal strife ; 

 subhumeral entire. Epipleura with one fine stria. Length 1.5-2 mm. 



Southern half of State, common; less so in tlie northern coun- 

 ties. February 23-October 4. Gregarious in winter beneath bark 

 and logs in low. moist gi'ound. Easily distinguished from regu- 

 laris by the smaller size, lighter color and one stria of epipleura. 



V. IlET.-ERirs Erichs. bs;54. (Gr., "friendship.") 



Readily known 1)\ I he |)rculiai- lobe on each side of thorax. 

 H'our species arc lislcd IVoni llic I'nilcd States, one of which occurs 

 in Indiana. 



