622 FAMILY XXV. — HISTERID^. 



fourths to apex in the specimen at hand, and it is my opinion, judg- 

 mrr from descriptions only, that coiivc.r'nisculus a.nd iiiiiiiitus are 

 synonymous, the latter name having priority. 



1101 ( ). Sapkinus oviFORjris sp. nov. 



Oval, convex. Black, shining; legs pieeous. Head finely and sparsely 

 punctate. Thorax with a large area near front angles, narrowing to base, 

 rather coarsely and densely punctate, disk almost smooth. Elytra with 

 ajiical third coarsely and sparsely punctate ; oblique humeral distinct, sub- 

 hnmeral absent; first dorsal extending three-fourths to apex; second, third 

 and fourth subequal, reaching but little beyond middle; sutural represented 

 l>y .1 row of punctures from slightly in front of middle to apical fourth. 

 I'ropygidiuin and pygidium coarsely and rather densely punctate. Front 

 liliin,' with six or seven sharp teeth. liCUgth 3.2 mm. 



Lawrence County; rare. June 10. Taken at carrion. Allied 

 1(> ira('(i< iisis Horn, but dii¥ers by the larger and much more coarsely 

 punctured area of elytra and less uniformly puncta.te thorax. 



Group B. 



This group comprises the Indiana species of Groups VIII and 

 rX of Horn. They are robust, rounded or oval species, having the 

 front of head widei' than long, distinctly margined and usually 

 marked with one or t^vo short curved si'ooves. 



KEY TO SPECIES OF OEOTTp r. 



(I. I'rosternum compressed, its strlre entire or nearly so, convergent in 

 front ; hind tibliB with two rows of fine spines. 

 h. Elytra with distinct sutural stria. 



c. Sutural stria entire; punctured space at apex of elytra of small 

 extent, not entered by the dorsal strioe. 

 (/. Thorax spnrsely punctured in front and at sides, its disk smooth ; 

 surface bronzed ; length 2.5-3.5 mm. 1192. sph.eroides. 



dd. Thorax rather sparsely and evenly punctured over its entire sur- 

 face ; black, strongly polished ; length 4.2 mm. 1193. l.vkensis. 

 cc. Sutural stria abbreviated at apex, or confused with the punctures. 

 e. Elytral punctures apical only, the basal region smooth ; thorax 

 with strigose punctures at sides and apex; surface bronzed; 

 length 3 mm. II94. sE^^INITENs'. 



ee. Elytral punctures dense, extending to base between the stria\ 

 if. Mirror, or shining smooth space about the scutellum, sharply 

 defined; sutural stria entire, confused at tip; length 3.5- 



^ ™™- 1195. EK.VTERNMS. 



ff. Mirror not well defined; sutural stria obsolete at apex- leno-th 

 ^-i^^- 1196. MANcrs. 



66. Elytra with sutural stria wanting; scutellar mirror well defined- 

 length 2.8-3.2 n„n, 119^_ ^^^^^^^^ 



uw. rrostemum compressed and .-ariunte, its stria? short, united in front - 

 hind tibiie with three r.nvs of long spines; sutural stria entire- ely- 

 tral punctures coarse. 31,,3, p.^^uelis. 



