50 H. C. FALL. 



at middle; ungual tooth subapical, broader than and nearly as long 

 as the upper portion of the claw, its tip about three times as far from 

 the base as from the apex. Length 9-11 mm.; width 5-6.2 mm. 



This species occurs rather commonly in the southeastern 

 Atlantic and Gulf region, extending west to Texas, and as far 

 north as Pennsylvania. The material at hand is from — 

 Pennsylvania; South Carolina; Georgia (Savannah); Florida 

 (Lake City, Crescent City, Cedar Keys) ; Alabama (Mobile) ; 

 Texas. 



37. D. rufa Linell. 



Smaller and a little more elongate than subcostata, rufotestaceous, 

 moderately shining; prothorax discernibly, elytra more evidently, 

 minutely alutaceous. Mentum flat posteriorly, transverse row of erect 

 setae well marked, the accompanying ridge feeble or absent. Clypeal 

 margin nearly squarely truncate at middle, the angles rounded. Front 

 and clypeus in same plane, the clypeal suture evident from side to 

 side, but more feebly impressed at middle; frontal impressions obso- 

 lete; front and clypeus rather densely subrugosely punctured. Pro- 

 thorax three-fifths wider than long, widest at base, sides more or less 

 evidently bisinuate, the basal sinuation always well marked, the apical 

 one feebler and sometimes absent; punctuation coarser and closer than 

 in subcostata, though not dense. Elytra two-fifths longer than wide, 

 slightly wider behind, punctuation nearly as in subcostata. Pygidium 

 without median impressed line. Prosternal carina single. Upper 

 tooth of front tibia very small and nearer the base than the apex as 

 in subcostata. Body beneath, hind thighs, and claws nearly as in 

 subcostata. Length 8-9 mm.; width 4.3-4.8 mm. 



All specimens known to me are from Florida ; the types from 

 Georgiana. 



There is little doubt that rufa is most nearly related to 

 subcostata, but specimens in which the anterior sinuation of 

 the sides of the prothorax is wanting or ill-defined might 

 reasonably be traced by the table to a point farther on in the 

 genus. There is, however, no subsequent species having the 

 posterior thoracic sinuation with subacute hind angles, com- 

 bined with the absence of post-clypeal convexity and the 

 position of the upper tooth of the front tibia. 



38. D. frontalis Lee. 



Moderately robust, slightly or scarcely wider behind, black or 

 brownish black, polished, the alutaceous sculpture wanting or detect- 

 able with difficulty on some parts of the elytra. Mentum flat pos- 

 teriorly with scattered large punctures; strongly declivous at about 



