340 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



to angles, marginal bead more or less reflexed and somewhat entire; 

 hase feebly rounded and feebly lieaded. scarcely a seventh wider than 

 the apex and equal to the length ; apical angles obtuse, sometimes 

 distinct and at others feebly rounded; basal angles subrectangular 

 and not at all prominent. 



PropleunK more or less coarsely and rather sparsely muricato- 

 granulate, more or less rugulose on the acetabidar convexities. 



Elytra oval to somewhat oblong-oval, about a third longer than 

 wide and Avidest at the middle ; hasc subtruncate, wider than the con- 

 tiguous prothoracic base ; humeri more or less obtusely rounded ; sides 

 evenly arcuate, apex not broadly rounded; disc more or less mod- 

 eratel}^ convex on the dorsum, rather strongly, evenly, and not very 

 broadly rounded at the sides, arcuately declivous posteriorly; surface 

 coarsely punctate, punctures irregularly' placed, with a tendency to 

 coalesce in twos and threes, rather simple and with a feeble corroded 

 appearance on either side of the suture, becoming muricato-tubercu- 

 late laterally and on the apex. 



Ejnpleurw moderate in width, gradually narrowing from base to 

 apex, superior margin rather strong, scarcely sinuate beneath the 

 humeri, where it is sometimes slightly visible at the angle from above; 

 surface usually impunctate and smooth. 



Sterna densely and rather scabrously sculptured. 



Parapleural coarsely and rather densely punctate. 



Ahdomeii more or less shining, quite coarsely and densely rugoso- 

 ])unctate, especially about the coxre; last two segments more finely, 

 less densely punctate, and not rugose. 



Legs moderate in length and stoutness; anterior femora mutic; 

 anterior tibial spurs rather small and similar in the sexes, the an- 

 terior slightly longer and just noticeably stouter than the posterior; 

 anterior and middle tarsi dissimilar in the sexes. 



Male. — Oblong-ovate, somewhat narrow. Antennae attaining the 

 prothoracic base. Elytra arcuately and somewhat obliquely decli- 

 vous behind. Abdomen slightly oblique, moderately convex, broadly 

 and rather strongly impressed at middle of the first two segments. 

 Anterior tarsi with the first two joints not noticeably thickened at 

 tip beneath, each with a small tuft of yellowish jmbescence, tufts 

 subacute; first joint of the middle tarsi bearing a small tuft. 



Femcde. — Ovate, somewhat robust. Antennae not attaining the 

 prothoracic base. Elytra arcuately and almost vertically declivous 

 posteriorly. Abdomen horizontal and rather strongly convex. An- 

 terior tarsi with the first joint slightly thickened at tip beneath, 

 groove scarcely interrupted by the apico-marginal spinules. 



Measyrements. — Males: Length, 15 mm.; width, 6.3 mm. Females: 

 Length, 14.5-17 mm.; width, 7.3-7.5 mm. 



I 



