SCARAB BEETLE GENUS PSAMMODIUS — CARTWRIGHT 441 



erately verrucose, the granules becoming smaller and weaker at middle 

 of occiput which is otherwise smooth. Clypeus moderately deeply, 

 triangularly emarginate, the angles each side broadly rounded, sides 

 arcuate, sides and angles weakly reflexed; genae weak, smooth, 

 broadly rounded with a deep eyelike pit in front of the eye; eyes well 

 developed. Pronotum convex, width 1.70 mm., length 0.9 mm.., all 

 angles broadly rounded, sides and base margined, entire, sides fimbri- 

 ate with long, fine, curving hairs, base broadly, somewhat angularly 

 lobed at middle; surface with intermixed coarse and very fine punc- 

 tures, the coarse punctures close but irregularly placed over disc, 

 somewhat finer and much sparser laterally, smooth beyond lateral 

 fovea, postapical furrow strongly impressed, interrupted only slightly 

 at middle, other furrows absent. Elytra not quite as wide as pro- 

 notum at base, strongly convex, width 2.15 mm., length 2.5 mm., 

 base not margined, humeri rounded, lateral margin fimbriate with 

 rather sparse long, fine hairs, strongly diverging over anterior half 

 then apically, evenly, almost hemispherically, jointly rounded from 

 side to side, striae fine with moderate, deep punctures, separated by 

 slightly more than their diameters, crenating the smooth, shining, 

 very weakly convex intervals, tenth interval not differing from the 

 others. Metasternum smooth, shining, medially flat and slightly 

 depressed posteriorly, very short, not over two-thirds as long as width 

 of posterior femur, deeply arcuately depressed in front of posterior 

 coxal plates. Abdominal segments, except apical, smoothly connate 

 at middle, finely, setigerously punctate at sides with rather long, 

 close, very fine hairs, last two segments setigerously punctate from 

 side to side. Pygidium convex, similarly with long fine hairs. An- 

 terior femurs without marginal line, clothed posteriorly with sparse, 

 long, fine hairs. Middle and hind femurs smooth, shining, with 

 scattered, sparse, long, fine hairs anteriorly and a single fringe row 

 posteriorly, the middle femurs only half as wide as the posterior 

 femurs, the latter only a third longer than wide. Posterior tibia 

 approximately twice as long as apical width, spurs short, foliaceous; 

 first joint of tarsus subequal in length to long spur, and to remaining 

 joints combined, the middle three shorter than wide. Length 3.8 

 mm., width 2.15 mm. 



Type: In collection of A. Martinez, Buenos Aires, Argentina. 



Type locality: Monte Hermoso, District of Cormel Dorrego, 

 Province of Buenos Aires, Argentina, Jan. 1, 1954, A. Martinez. 



Specimens examined: Holotype and one para type bearing same 

 data as type. Paratype in collection of U. S. National Museum. 



Remaeks: The size, brown color, very convex and strongly oval 

 form, and long hair mark this species. 1 suspect it is flightless. 



