SCARAB BEETLE GENUS PSAMMODIUS — CARTWRIGHT 455 



nae testaceous. Head moderately convex, verrucose, posteriorly with 

 a band of close fine punctures above and between the eyes. Clypeus 

 with a small triangular tooth each side of the wide, shallowly emargi- 

 nate anterior margin, sides weakly arcuate, the nearly right-angled 

 genae not fimbriate. Pronotum convex, width 1.4 mm., length 0.9 

 mm., anterior angles obtuse, posterior angles broadly rounded, sides 

 and base finely margined, very weakly crenate, fimbriate with short, 

 even spicules, the spicules about as long as distance between punctures 

 of the pronotum; without transverse grooves, surface with evenly 

 placed, very moderate punctures which very gradually become finer 

 anteriorly from basal part of disc and a little sparser laterally where 

 they extend beyond the lateral fovea to the extreme margin and into 

 the anterior angles. Elytra convex, shining, width 1.6 mm., length 

 2.2 mm., base margined, humeri slightly dentate, sides subparallel, 

 margins not fimbriate; striae deep, fine strial punctures crenating 

 edges of the very weakly convex intervals. Metasternum smooth, 

 shining, slightly depressed at middle, with a deep, sharply defined 

 midline suddenly terminated at each end extending over the middle 

 two-thirds of the total length ; anterior postcoxal line finely scabrous, 

 joining a similarly scabrous area at extreme sides. Abdominal seg- 

 ments smooth, shining, with scattered fine punctures from side to 

 side, a few fine short hairs laterally, finely crenate in front, the termi- 

 nal segment more deeply and widely crenate at middle. Pygidium 

 very finely scabrous. Anterior femur with deep anterior and poste- 

 rior marginal lines, posterior face with scattered, moderate punctures. 

 Middle and posterior femurs smooth, shining, a few short hairs along 

 anterior edge and a curving, posterior row of four or five short, stiff 

 hairs outward near the knee; posterior femur only one-seventh wider 

 than middle femur, posterior marginal line very fine, extending less 

 than half the length from the knee. Posterior tibia more than twice 

 as long as wide at apex, long spur equaling length of first tarsal joint 

 plus half the second, tarsus suboqual to tibia in length. Length 3.5 

 mm., width 1.6 mm. 



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



Type locality: "S. F. del Chipiriri," Province of Chapare, State 

 of Cochabamba, Bolivia, 400 m., November 1953, A. Martinez. 



Specimens examined: Holotype and 21 paratypes collected at same 

 time and place as type. Paratypes are in collections of A. Martinez 

 and U. S. National Museum. 



Remarks: Superficially this species resembles Jimbriatus and was 

 collected with that species, however, the pronotal punctures are finer, 

 the elytra slightly more elongate-parallel without the long marginal 

 fimbriae, and the maxillae lack teeth. 



