NORTH AMERICAN GEOTRUPINAE — HOWDEN 253 



SOUTH CAROLINA: 17 males, 12 females. Clemson College, Columbia, 

 Florence, Govan, Hampton, Jocassee, Longcreek, Meredith, Orangeburg, 

 Palmetto, Rocky Bottom, Sassafras Mountain, Tunnel Walhalla, Williams- 

 burg County; (6) June, (13) July, (6) August, (3) September, (3) October. 



TENNESSEE: 1 female. Sparta; (1) August. 



VIRGINIA: 1 male, 3 females. Nelson County, Norfolk, Petersburg (Camp 

 Lee); (1) April, (2) August, (1) September, 



Geotrupes hornii Blanchard 



Geotrupes hornii Blanchard, 1888, pp. 107, 108 (lectotype, male, bearing label 

 "Tewks. (Mass), 4/28," in Blanchard collection, MCZ). — Boucomont, 

 1911, p. 344.— Bradley, 1944, p. 112. 



(?) Geotrupes miarophagus Say, in Melsheimer, 1846, p. 139. 



Length 12 to 18 mm., greatest width 7 to 11 mm. 



Color of dorsum and ventral surface black without any trace of 

 other colors. Antennal club rather dull 3^ellow-brown, slightly lighter 

 than remaining segments. Eye can thus, clypeus, and most of vertex 

 coarsely, densely, and sometimes confluently punctured. Three 

 tubercles of head poorly defined, but with indented line at base of 

 clypeus rather pronounced. Clypeus poorly margined, varying con- 

 siderably in shape, usually rather evenly arcuate or slightly more 

 so anteriorly. Anterior portion of eye canthus poorly margined, 

 sometimes forming an almost straight line with the clypeus or at most 

 forming a very obtuse angle. Sides of canthi slightly arcuate. Pro- 

 notum completely margined, rather convex. Posterior margin may 

 be only slightly margined laterally. Coarse punctures scattered 

 irregularly over pronotum, dense laterally. Median lateral indenta- 

 tion very poorly indicated. At least posterior half of pronotal midline 

 slightly indented. Scutellum generally triangular with median line 

 usually slightly indented, sides arcuate, more so anteriorly. Elytra 

 with well developed striae containing coarse, very irregular punctures. 

 Sutural stria extends around scutellum to elytral base. Second stria 

 does not reach the elytral base. Elytral margin narrow, slightly 

 widened anteriorly. 



Foretibia of male differing from that of female by having the 

 antepenultimate external tooth deflexed slightly downward and thick- 

 ened ventraily. Otherwise the foretibiae are similar, with six or 

 seven external teeth and a longitudinal raised carina extending along 

 the inner edge of the dorsal surface. This carina, similar to that of 

 balyi (pi. 2, fig. 14), has an extension onto the penultimate tooth. 

 The row of setae at the base of the longitudinal carina has each seta 

 separated by a small transverse carina, Male specimens also have 

 a small raised carina near the anterior base of the front femur; hind 

 femora are unarmed. External faces of tibiae of meso- and rneta- 

 thoracic legs have thi'ee complete carinae and one or two partial carinae. 

 Tarsal claws similar in both sexes. 



