284 CHRIS. H. ROBERTS. 



of t]ie elytra, as reflexed, as described by Dr. LeCoiite, the flatten- 

 ing of the margin continning to the suture gives them tliat ai)pear- 

 ance to a certain degree. 



In eiiKirghidtiis the femoral tooth is distinct and strong ; in caro- 

 / till IS weak, often feeble; sutuml angles in emarf/uiatas rather 

 broadly rounded ; in carolinns feebly so ; apices of elytra in emar- 

 (jiiiatns smooth ; in carnlhma finely serrulate. This serration is very 

 fine, and to see it requires care, a proper position of the specimen, 

 and that it be clean. An examination of a hundred or more speci- 

 mens found the character constant ; carollnus is smaller and less 

 broadly oval, and the male genitalia are quite unlike. 



Group B. 



I>. Iioriiii 11. sp. PLs. 5, ti, figs. 5, r>n and 5b. — Size moderate, elongate oval, 

 not strongly convex ; surface iilack, not polished, somewhat shining or bronzed, 

 frequently opaque, striae and punctures feebly marked, more evident in opaque 

 specimens: lateral margins of elytni in % not sinuate, in 9 strongly sinuate at 

 exterior apical angles, depressions evident, stronger in 9 ! sutural angles in % 

 rounded, in 9 produced, and with the suture strongly dehiscent ; under surface 

 dark brown, shining, slightly bronzed ; legs dark testaceous; anterior tibias regu- 

 larly widening from base to apex : apex oblique, exterior apical angle obtuse, but 

 not rounded ; femora without tooth, punctures (6 % . 7 9 ) "ot deep or closely 

 placed. Length 10 11 mm. : breadth 5.5-6 mm. 



//r/i>. — North and ^liddle Atlantic States; Texas. Described 

 from four males and four females. 



This species has been mixed with ((sxlinl/ix^ but the rounded su- 

 tui'al angles of the elytra will readily separate the male. The female 

 is not so easily pleased, but the droiKjIij dehiscent apices of the elytra 

 and obtuse angulation of the tibiie with care will determine it. 



1 take pleasure in naming this species after Dr. G. H. Horn, as a 

 slight recognition of many favors and kindly interest. 



Group C. 



D. iiigrior n. sp. Pis. 5, 6, figs. 6, (>« and (i/(. — Size moderate, regularly 

 oval, rather convex ; surface black, shining, slightly bronzed : strite and punctures 

 evident ; lateral margins of elytra in % slightly sinuate at exterior apical angles, 

 sinuate at apex, sutural angles evident, produced ; in 9 lateral and apical mar- 

 gins strongly sinuate, sutural angles strongly jjroduced ; depressions deep, apices 

 strongly depressed, not dehiscent at suture ; under surface black, shining, middle 

 and posterior tibije and tarsi browui.sh yellow; femora brown; anterior tibiae 

 regularly widening from base to apex ; apex truncate, exterior ai)ical angle acute, 

 evidently i)ro(luced ; femora without tooth, punctures (9 'Jj , 10 9 ) <teep and 

 closely ])la(e(l. I^ength 1(M2 mm. ; breadth (j-7 mm. 



