100 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 65 



tudinally carinate; front flat, deeply transversely impressed behind 

 the ej)istoma, and with two transverse irregular elevations, which are 

 more or less obsolete and extending nearly to the e3^es, there is also 

 a narrow groove extending around the antennal cavities and mar- 

 gined posteriorly by a short elevated carina; vertex with a distinct 

 transverse arcuate smooth elevation extending to the eyes; surface 

 densely and coarsely punctate, the punctures confluent, irregular in 

 shaj^e and size, and rather sparsely clothed with long, fine, erect 

 hairs, which do not conceal the surface; eyes large, more acutely 

 rounded on top than at bottom, and nearly confluent on the occiput ; 

 epistoma narrow, elevated, broad triangularly emarginate at the 

 middle, with the lobes broadly rounded; antennae rather long, and 

 very pubescent, third joint as long as the following three joints 

 united, the outer joints compact. Pronotum strongly transverse, two 

 and one-half times as wide as long, widest along middle, slightly 

 narrower in front than behind; sides obliquely expanded to apical 

 third, then parallel to basal third, and finally strongly concavely 

 attenuate to the posterior angles, which are rectangular; anterior 

 margin arcuately emarginate, Avithout a median lobe; base broadly 

 arcuately emarginate on each side at the elytral lobes, with a broadly 

 rounded median lobe, which is broadly and feebly emarginate in 

 front of scutellum; disk moderately convex, with a very feeble 

 median depression, and on each side of which is a round deep de- 

 pression in front of elytral lobe, and a deeper transverse one along 

 the anterior margin, there are also two more or less obsolete irregular 

 depressions at the sides; surface coarsely and densely punctate, the 

 punctures irregularly placed, and becoming coarser and confluent at 

 the sides; intervals nearly smooth. Scutellum very long and acum- 

 inate at apex, and the surface obsoletely granulose. Elytra wider 

 than pronotum at base, but almost equal in width to it at the middle ; 

 sides broadly rounded at humeral angles, nearly parallel to apical 

 third, then arcuately attenuate to the tips, which are obtusely 

 rounded; lateral margins strongly serrate to the humeral angles; 

 humeri moderately prominent; base with a rather acutely rounded 

 lobe ; disk feebly convex, and each elytron with four costae, the first 

 extending from apex along suture, and elevated to basal third, where 

 it becomes obsolete, the second feebly elevated, beginning at the pos- 

 terior fovea, extending forward to near the base, and interrupted by 

 the median fovea, the third feebly elevated and extending from the 

 median fovea to near the apex, and narrowly interrupted by the pos- 

 terior fovea, and the fourth rather strongly elevated, extending along 

 the lateral margin behind the posterior fovea, but not quite attaining 

 the apex ; surface coarsely and densely punctate, the punctures denser 

 and more confluent in the foveae and toward the sides; intervals 

 smooth. Abdomen beneath coarsely and sparsely punctate, with the 



