280 PROCEEDINGS OF THE NATIONAL IMUSEUM vol. i04 



gradually rounded (pi. 2, fig. 2b). Inner edge of the anterior margin 

 forming an almost straight line usually curved slightly forward near 

 the midline. A double row of coarse punctures runs entirely across 

 the pronotum just behind the anterior margin (pi. 2, fig. 3b). A few 

 coarse, moderately deep punctures are unevenly scattered over the 

 pronotum, being most numerous near the posterior angles. A deep, 

 almost circular indentation with numerous coarse punctures is present 

 on each side of the pronotum near the middle. Numerous fine 

 secondary pmictures usually evident over entire pronotum, becoming 

 more pronounced near the posterior angles, sometimes giving the 

 pronotum in that area a rough appearance. 



Elytra with at least the first three or four striae shaUowly indented; 

 sutural stna deep and continuous, not vague anteriorly near scutellum. 

 Fifth stria obsolete, indicated only by a regular row of punctures, the 

 other striae barely indicated. Moderately coarse deep punctures are 

 present in all striae, often being the only indication of obsolete striae. 

 These punctures in many cases joined by deep grooves, while others 

 are not, giving the striae an interrupted appearance. Elytral inter- 

 vals are at least slightly convex in appearance, their highest point 

 being midway between the adjoining striae. Elytral margin broadly 

 expanded and somewhat explanate, more so anteriorly, posteriorly 

 ending in a very small sutural spine. Angle between normal convexity 

 of elytra and beginning of margin rpther sharp in outline, approaching 

 a right angle (pi. 2, fig. 4b). Much of ventral surface covered with 

 numerous, long, reddish yellow setae. Median portions of the last 

 three or four abdominal segments shiny, generally lacking setae except 

 along posterior margins. Tibia with many long spinelike setae lining 

 outer edges and carinae. In the male the apical tooth of the outer 

 margin of the foretibia is greatly modified, elongate, bent rectangularly 

 inwards, slightly recurved with inner edge sinuate. In addition, the 

 foretibia has a row of 4 (sometimes 3 to 7) elongate conical teeth on 

 inner sm-face. The hind femur of the male is also modified by having 

 a small spine present near the posterior margin by the coxa. None of 

 these modifications is present in the female. 



Male genitalia and genital capsule large and heavily sclerotized. 

 Capsule with dorsal and vent^-al plates fringed with a few short setae. 

 Genitalia quite complex with two dorsal parameres and a bUobed 

 ventral phallobase, which are rather variable in shape. The short 

 right dorsal paramere is very complex, the posterior edge of the large 

 bulbular basal portion usually forming a wide oblique irregular V 

 (pi. 2, fig. 5b). 



Variation in size, previously noted, is considerable. Differences 

 between the two sexes is also considerable. The modifications of 

 the foretibia and hindfemora in males have already been noted. 



