36 PKOCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



to bottom, broacli}'', transversely flattened behind the epistoma, with a 

 shallow, narrowly triangular depression on the front, and a vague, 

 narrow, longitudinal groove extending from depression to occiput; 

 surface densely, finely reticulate, transversely rugose behind the 

 epistoma, sparsely, finely, irregularly punctate, and sparsely clothed 

 with recumbent, white hairs, which are longer and denser on the 

 flattened area behind the epistoma. 



Pronotum moderately convex, twice as wide as long, slightly 

 narrower at apex than at base, and widest at basal third ; sides when 

 viewed from above obliquely expanded from apical angles to basal 

 third, then strongly arcuately narrowed to the posterior angles 

 which are rectangular; anterior margin transversely truncate; base 

 transversely truncate to middle of each elytron, with the median 

 lobe moderately produced, and feebly, arcuately emarginate in front 

 of scutellum; disk rather deeply, narrowly, transversely depressed 

 along anterior margin, broadly, deeply depressed anteriorly along 

 lateral margins, broadly, deeply depressed on basal half, the depres- 

 sion more shallow in front of scutellum; surface densely, finely 

 reticulate, with a few scattered ocellate-punctures in the depres- 

 sions, and clothed with a few short, inconspicuous hairs. Scutellum 

 small, triangular, arcuately rounded in front, the surface obsoletely 

 reticulate. 



Elytra moderately convex, slightly wider than pronotum at base, 

 subequal in width at base and behind middle; humeral angles ob- 

 tuse; sides arcuately expanded behind base, strongly, arcuately con- 

 stricted at basal fourth, arcuately rounded at middle, then obliquely 

 narrowed to the tips, which are conjointly broadly rounded, and 

 coarsely, irregularly serrulate; humeri smooth, rather strongly de- 

 veloped; disk with broad, deep, transverse, basal depressions, but 

 without longitudinal carinae; surface coarsely, irregularly punctate, 

 the punctures forming more or less distinct rows on basal halves, 

 but becoming obsolete toward apices. 



Abdomen beneath feebly, rather coarsely reticulate, sparsely, ir- 

 regularly ocellate-punctate, the punctures very shallow, elongate, 

 open posteriorly, and each provided with a very short white hair 

 arising from its center ; last segment broadly rounded at apex, with 

 the apical groove deep and following the outline of the apical half 

 of the segment. Presternum finely, densely reticulate. 



Length, 3.25 mm ; width, 1.13 mm. 



Type locality. — Coban, Alta Vera Paz, Guatemala. 



Type.—V.^.'^M. No. 49571. 



Remarks. — Described from a single example (sex not determined) 

 collected at the type locality in May 1926 by Dr. J. M. Aldrich. 

 The type has a distinct bluish or purplish color on the elytra, but 

 this is probably due to discoloration. 



