8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



angle to slight genal notch; clypeal margin feebly recurved, apically 

 inflexed ventrally at middle; genae prominent, nearly right angled. 

 Surface finely, quite closely granulate along anterior margin and 

 more widely upward at sides, median tumidity gradually smoother 

 to faint rugulose sculpture over middle and gradually to fine dense 

 punctures upward over frontal area, slightly larger punctures at 

 occipital areas. Frontal suture visible at sides. 



Pronotum : Pronotum broader than long (greatest width compared 

 to length measured along center line: width 1.9 mm, length 1.4 mm), 

 very convex. Punctures very coarse and close over basal half, then 

 gradually less coarse and less dense anteriorly, almost impunctate 

 narrowly along anterior margin and over the widely explanate sides 

 anteriorly. Anterior angles broadly rounded. Posterior angles 

 obliterated by constriction and loss of lateral areas over basal two- 

 thirds of pronotum. Pronotum much narrower at base than the 

 width of the elytra between the humeri. Pronotal outline character- 

 istic, differing from other known species (fig. 5) . 



Elytra: Suboval, widest at apical one- third; intervals strongly 

 carinate, under X 50 magnification the crest of the carina shows 

 minute very close punctures giving a roughened edge; striae deep, 

 punctures fine, deep, and placed at junction of very coarse elliptical 

 or oval depressions that are bordered by a very fine carina. At first 

 glance the striae appear to be simply a chain of very coarse, very 

 close, deep punctures but clean specimens show the fine, deeper punc- 

 tures between them. Scutellum narrow, about three times as long 

 as wide, smooth with an anterior depression at middle. 



Sternum: Prosternum angulate posteriorly at middle. Meso- 

 sternum with coxae widely separated basally by slightly more than 

 length of trochanter of middle leg; smooth median depressed area 

 with straight diverging carina-like edge extending three-fourths the 

 distance from sharply delimited base, which is slightly raised above 

 metasternum and ending anteriorly in a wide, shallow depression; 

 laterally, outside depressed median area, flat borders overlap the 

 edges of anterior half of mesocoxae. Mesocoxa smooth basally, 

 finely, closely, setigerously punctate over anterior half between over- 

 lapping edges of mesosternum and epipleuron of elytron. Meta- 

 sternum shallowly depressed medially with moderately deep, complete 

 midline; depression in front of posterior coxae with sharply delimited, 

 arcuate anterior border; laterally metasternum extending far forward 

 between mesocoxae and epipleurae of elytra, bordered here by a 

 finely carinate edge. A few fine to moderate, shallow punctures at 

 base of mesocoxae. 



Abdomen: The first three of four visible segments longer at sides 

 than middle, terminal segment longer at middle; all bordered anteriorly 



