450 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



scabrous at sides, midline evident but not distinctly impressed, 

 anterior postcoxal line absent, posterior antecoxal area deeply im- 

 pressed but without a sharp, distinct line. Abdominal segments 

 smooth and shining but with scattered minute punctures and fine 

 alutaceous sculpture at sides, minutely crenate in front, terminal 

 segment with a transverse row of long, very fine hairs. Pygidium 

 minutely alutaceous with marginal row and a few discal setigerous 

 punctures bearing moderately long, fine hairs. Anterior femur without 

 marginal line, posterior face very finely punctate, minutely alutaceous, 

 feebly concave. Middle femur with a widely spaced row of fine 

 setigerous punctures near anterior edge and a row of three or four 

 similar setigerous punctures near posterior margin from middle toward 

 the knee, posterior marginal line absent. Posterior femur three- 

 fourths wider than middle femur, smooth and shining with scattered, 

 very fine punctures and very minute alutaceous sculpture, setigerous 

 punctures and posterior marginal line absent. Posterior tibia twice 

 as long as wide at apex, spurs narrow, the long spur as long as the first 

 two tarsal joints combined. First tarsal joint of posterior tarsus 

 elongate-triangular, almost as long as followmg three together. Length 

 3.8 mm., width 2.1 mm. 



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



Type locality: Nova Friburgo, State of Rio de Janeiro, Brazil. 



Specimens examined: Holotype and two paratypes bearing same 

 data, Nova Friburgo, State of Rio de Janeiro, Brazil, Oct. 18, 1947, 

 Wittmer Coll., Martinez. Paratypes are in collections of U. S. 

 National Museum and A. Martinez. 



Remarks: Psammodius martinezi is one of the few species of 

 Psammodius that have no trace of marginal fimbriae on the pro- 

 notum. It lacks also the typical transverse ridges and furrows of 

 the pronotum. 



Psammodius martinezi is named in honor of Dr. Antonio Martinez, 

 who generously loaned his collection of South American Psammodius 

 for study and had already recognized the present species as 

 undescribed. 



Psammodius insulcatus (Schmidt) 



Psammobius insulcatus Schmidt, Arch. Naturg., abt. A, heft 1, vol. 82, p. 102, 1916. 



Oblong oval, moderately shining, dark castaneous. Antennae tes- 

 taceous. Head moderately convex, coarsely verrucose, occiput 

 smooth. Clypeus dentate each side of broad, shallow emargination, 

 sides slightly arcuate to the rounded genae, genae not fimbriate. 

 Pronotum slightly narrower in front, width 1.80 mm., length 1.15 

 mm., anterior angles broadly rounded, posterior angles obsolete, 

 very broadly rounded into base, base entire, without mai^inal line, 



