498 FAMILY XIV. — PHAL ACRID fl:;. 



Of these nine species, belonging to five genera, have been taken in 

 Indiana, while one additional genus and two species may occur. 



KEY TO INDIANA GENERA OF PHALACRID/E. 



a. AntennsB iusertect under the sides of the front, their base entirely con- 

 cealed from above ; scutellum large ; front and hind tarsi of the same 

 length ; spurs of hind tiblas very short. I. Phaiacbus. 



aa. Antennas inserted at the sides of the front, their base visible from above ; 

 scutellum small or moderate ; hind tarsi elongated. 

 6. Basal joint of hind tarsi shorter than tlie second Joint. 



c. Apex of prosternal spine inflexed, without an acute and free edge; 



elytra with one or two diseal striie, the suture beaded; second 



joint of hind tarsi of moderate length. II. Olibbus. 



cc. Apex of the prosternal spine with an acute free edge, and bearing 



a transverse row of spinules; elytra with a single diseal stria, 



the suture not beaded. 



d. Second joint of hind tarsi elongated, very much longer than first 



joint, spongy pubescent beneath in male ; hind tibial spurs long, 



very unequal. III. Actlomtjs. 



dd. Second joint of hind tarsi moderate, not more than twice as long 



as first, finely pubescent beneath iu both sexes; hind tibial 



spurs small and inconspicuous. IV. Eustilbus. 



B6. Basal joints of hind tarsi longer than second; elytra with two diseal 



strise. 



e. Prosternal spine inflexed at apex and without terminal spinules; 



basal joint of hind tarsi much longer than all the other joints 



together. Litocheus. 



ce. Prosternal spine not inflexed, the edge free and acute; basal joint 



of hind tarsi subequal in length to the next two together. 



V. OCHEOUTUS. 



I. Phalacrus Payk. 1798. (Gr., " bald + head.") 



Besides the characters above mentioned, the members of this 

 genus have a single diseal stria on each elytron and the head is 

 marked with four or five minute f ovese each side near the eye. 



*955 (290.3). Phalacrus politus Melsh., Proc. Phil. Acad. Nat. Sci., II. 

 1fi44, 102. 

 Broadly oval. Black, moderately shining; legs and antennae paler. An- 

 tennae slender, the third joint equal in length to the two following united. 

 Thorax twice as wide at base as-apex, feebly reticulate in wavy lines, very 

 finely and spiirsely punctate. Elytra not narrowed toward tips, which are 

 very brondly and evenly rounded; sutural stria complete, very fine; diseal 

 stria fine, distinr-( ; disk with rows of fine, feeble punctures. Metastornal 

 process wide, rounded at npex and projecting far in advance of middle 

 coxse; prosternal process nearly one-half as wide as metasteraal. Length 

 J.8-2.S mm. 



