40 FA M FLY IT. CAIiABTME. 



Horn. " X/rit(>i>/ !< table of the genus Omophron," in Bull. 

 Brook. Ent. So,-., I, 1878. 4. 



Nine species are known from the United States, of which four 

 have been taken in Indiana, while one other may occur. 



KEY TO INDIANA SPECIES OF OMOPHRON. 



a. P>roadly oval, shining; elytral strhv almost entirely obliterated at apex 

 and indistinct on side, the intervals flat: median line of thorax 

 very faint. 



it. Rows of elytra! punctures reaching only to middle; color dark 

 brown or nearly black. The side margins of thorax and elytra pale. 



LABIATUM. 



Ith. Hows of elytra I punctures reaching two-thirds the distance from 

 base to apex; color dark metallic green, pale at sides. 



17. NITIDUM. 



</</. Less broadly oval. less convex and less shining; elytral strife reach- 

 ing to very near the apex, distinct on sides, the intervals convex. 

 c. Elytra 14-striate; stria' shallow, indistinct aT apex, punctures large, 

 distant. is. ROBUSTTM. 



cc. Elytra IH-striate; stria' deep, distinct at apex. 



(I. Thorax wiTh side margin only pale. 10. AMERICANUM. 



<lil. Thorax with sides, basal and apical margins pale. 



20. TESSELLATUM. 



0. liibiiiluni Fab. occurs in the "Middle and Southern States," 

 and should be looked for in southern Indiana. (Fig. 27.) 



17 (71). OMOPHRON NITIDUM Lee., Ann. Lye. Nat. Hist., IV. 1S4S, 447. 



Dark metallic gieen. shining: thorax and elytra with a narrow, pale 

 margin, that of the elytra with three irregular projections, the h'rst and 

 second of which extend inward to the eighth and sixth stria'; the third 

 longer, sulxpiadrate and near the apex. Thorax without punctures on 

 pale margins and at center, coarsely and sparsely punctured near base 

 and apex. Punctures of elytra large, distant. Length r-(! mm. 



Lake County; scarce. Taken by A. B. Wolc.ott from the beach 

 of Lake Michigan near the station of Pine. April 29-May 28. 



IS (74). OMOPHRON ROBUST VM Horn. Trans. Amer. Ent. Soc.. III. 1S7<>. 7:!. 

 Tale brownish-yellow; elytra with broken green cross-markings; The 

 stria 1 witli coarse distant punctures. Thorax with a narrow green cross- 

 band, which extends forward and backward at the middle, and an oval 

 green spot each side. Length <i.r> mm. 



Stein collection from southern Indiana. Probably throughout 



the State, but scarce. Taken by Dury at Cincinnati. 

 1!) (7<>). OMOPIIUOX AMKKK AM M Dej.. Spec., V. IS.",!, ."is:!. 



Bronzed or greenish-black: head mostly green: thorax and elytra 

 with pale margins, those of the former very narrow. Punctures of elytral 

 stria 1 rather fine, the intervals strongly convex. Length (5-7 mm. 



