40 PROCEEDINGS OF THE NATIONAl. MUSEUM vol.65 



feebly arcuate above when viewed in profile; head and pronotum 

 nigro-aeneous, the latter with a more or less triangular yellowish 

 spot, situated on each side along the lateral margin, and not quite 

 reaching to the posterior angles nor anterior margin; elytra nigro- 

 aeneous, with a strong cyaneous or purplish tinge, and ornated 

 with numerous small yellow spots, which are arranged on each 

 elytron as follows: A small round one at base near scutellum, a 

 narrow longitudinal one along lateral margin behind humerus, and 

 strongly sinuate on the inner margin, four small ones on median 

 part, arranged obliquely in pairs, and a small spot near the apex, 

 sometimes the spots more or less confluent, and with an additional 

 one along the suture in front of apex; beneath aeneous, with a 

 strong cupreous or brownish tinge. 



Head flat, with a short elevated carina on the occiput; surface 

 coarsely and densely punctate, the punctures more or less confluent, 

 and the sides forming a network of polygonal areas, the bottom 

 of the punctures smooth, and from the center of each puncture arises 

 an erect inconspicuous hair; epistoma broadly and rather deeply 

 arcuately emarginate in front, forming an arcuately rounded lobe 

 on each side of the emargination ; antennae serrate from the fifth 

 joint. Pronotum moderately transverse, and rather strongly convex, 

 one and one-half times as wide as long, distinctly narrower in front 

 than behind, widest at basal third, with an obsolete depression at 

 middle along base, and on each side near the inner margin of the 

 yellow space a deep foveate depression, situated a short distance 

 from the base; sides obliquely expanded to basal third, where they 

 are arcuately rounded to the posterior angles, which are nearly 

 rectangular and bent downward, the margins not flattened, and 

 visible from above; anterior margin arcuately emarginate, with a 

 broadly rounded median lobe; base transversely truncate; surface 

 densely and very coarsely punctate, the punctures shallow, nearly 

 confluent, and the intervals smooth and shining, rather densely 

 clothed with short erect inconspicuous hairs. Elytra convex, equal 

 in width to pronotum at base, and rectangular at humeral angles; 

 sides parallel to near apical third, then obliquely attenuate to the 

 tips, which are conjointlj^ obtusely rounded, the lateral margins 

 rather strongly serrate posteriorly ; humeri strongly developed ; sur- 

 face striato-punctate, the striae on disk feebly impressed and wider 

 than the intervals anteriorly, becoming more deeply impressed and 

 much narrower toward the apex, the punctures large, round and 

 placed close together in the striae on the basal half, but becoming 

 much smaller posteriorly, the intervals with a single row of re- 

 motely placed small punctures, and with a few short erect hairs. 

 Abdomen beneath densely and coarsely punctate, the punctures 



