AMERICAN COLEOPTERA. (7 



Dubia very greatly resembles frondicola, but may be distin- 

 guished by the more hairy male tarsi, the rounded clypeus 

 (always a little emarginate or truncato-emarginate at middle 

 in frondicola) and by the upper tooth of the front tibiae median 

 or slightly post-median in position (distinctly ante-median in 

 frondicola). This upper tibial tooth is small or subobsolete 

 in the few specimens of dubia and is especially referred to by 

 LeConte, but the development of the tibial teeth is often 

 somewhat variable and may prove so in this case. 



77. E>. curvaticeps n. sp. 



Oblong, subovate, reddish-brown or castaneous, shining, elytra 

 minutely alutaceous. Mental declivity long, beginning at anterior 

 two-fifths or even nearer the middle, summit of declivity moderately 

 elevated. Clypeal margin arcuate from side to side. Clypeal suture 

 moderately impressed, front and clypeus rather densely punctate. 

 Prothorax one-half wider than long, similar in form to frondicola but 

 less transverse; punctuation sparser than in frondicola, the punctures 

 separated by from one to two times their own diameters. Elytra three- 

 tenths longer than wide and two and two-fifths times as long as the 

 prothorax, very slightly widened posteriorly; punctuation moderate, 

 distinctly less close than in frondicola, irregular in the intercostal spaces, 

 the costa? well defined. Pygidium coarsely not very closely punctate, 

 Body beneath sparsely punctate at middle, more closely but not 

 densely at sides. Upper tooth of front tibiae distinctly ante-median; 

 ungual tooth rather slender, subapical, obliquely truncate, its apex 

 about twice as distant from the base as from the end of the claw. 

 Length 6.6-8 mm.; width 3.8-4.4 mm. 



Hob. — Brownsville, Texas. Collected by Beyer, Schaeffer 

 and Barber. 



78. D. bidentata Lee. 



Ovate, strongly convex, black or castaneous, polished and strongly 

 shining. Mental declivity feebly margined; clypeus rounded in front. 

 Head and prothorax sparsely punctured, elytra more closely and less 

 sparsely so; intercostal punctuation confused. Beneath more closely 

 and densely punctate. Upper tooth of front tibia smaller or sub- 

 obsolete, a little behind the middle and much nearer the second tooth 

 than the latter is from the apical one. Ungual tooth subapical, 

 broader than and nearly as long as the superior portion of the claw, 

 its tip three times as distant from the base as from the apex of the 

 claw. Length 6.2-7.7 mm.; width 3.6-4.5 mm. 



TRANS. AM. ENT. SOC, XXXV. MARCH, 1909. 



