THE MELAiXPin ID I'.AKK MKKTLKS. 12!>1 



Throughout tlic Slate; rre<|uent. May 12-July 31. Occurs be- 

 neath bark and on dead linil)S. The prosrernum is prolonged nearly 

 as much as in the click beetles of the genus Mcl-minl.un, some of 

 which it closely resembles. However, the cavity in the mesostermim 

 is much more shallow. 



Tribe IV. MALLODRYINI. 



This tribe is also represented by the single genus Mallodri/a 

 Horn, formed for a "rather inconspicuous species, M. siibcenea 

 Horn, resembling a depressed M< l<t>i<]ri/<i or an Emmcsa, from 

 which it differs by the slender tarsi, the penultimate joint not being 

 excavate-emarginate and the front tarsi not dilated in the males." 

 It is oblong, piceous, with faint aeneous surface lustre, and 6 to 8.5 

 mm. in length. The types were taken by Dury near Cincinnati, 

 who found them rather abundant on the branches of dead honey- 

 locust. It probably occurs in the southeastern part of Indiana, but 

 no specimen has been seen from the State. 



Tribe V. ORCHESIINI. 



Rather small oval, convex forms, having the head vertically de- 

 flexed; antenna? 11-jointed, the joints gradually thickened, except 

 in Microscapha, where they end in a distinct club; front coxre oval, 

 separated by the prosternum ; tarsi filiform, claws simple. Four of 

 the five genera, recognized by Horn as composing the tribe, are 

 known to be represented in the State, while the single species of the 

 other may occur. 



KEY TO INDIANA GENERA OF ORCHESIINI. 



a. Spurs of hind tibia- small or moderate, not serrate, but often with trans 



verse ridges. 

 h. Hind coxae not oblique; form oval. 



c. Elytra with rows of moderate or coarse punctures; prosteruiv.u 

 narrowing to a point and not prolonged behind the cox;e. 



VI. ErsTROi'iirs. 



cc. Elytra finely and irregularly punctured: prosternum prolonged be- 

 hind the coxa- and separating them, the apex slightly broader. 



VII. IIOI.OSTROPHl'S. 



hl>. Hind coxa 3 oblique; form oblong-oval ; length less than 5 mm. 



VIII. HALLOMENUS. 

 ad Spurs of hind tibia- large, the inner one very long, pectinate. 



(I. Second antennal joint normal. IX. OKCHI.SIA. 



diL Second antennal joint thickened; antenna) strongly clavate. 



MlCBOSCAPHA. 



