6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



medially weakly ridged longitudinally, alutaceous-argillaceous with 

 few scattered, shallow indistinct punctures. 



Anterior femur surprisingly flat with weak indistinct perimarginal 

 groove, everywhere alutaceous-argillaceous; tibia with two sharp, 

 triangular external teeth, posterior tooth at apical fourth, inner margin 

 ending in tooth bent downward, spur long, slender, bent inward, 

 underside alutaceous outside a longitudinal carina to posterior tooth, 

 smooth and shining along inside; first, last, and middle three antennal 

 segments combined, approximately equal in length; claws short, hair- 

 like. Middle femora and tibiae alutaceous-argillaceous with fine setig- 

 erous punctures separated generally by two or more diameters, 

 postfemoral line complete, tibial short spur short, sharp, curved, half 

 as long as long spur; long spur long, narrow, acuminate, half length of 

 first tarsal segment, latter longer than remaining four combined; 

 tarsus slightly longer than tibia in length. Posterior femur, tibia, and 

 tarsus as in preceding. 



Allotype female. — Length 3.5 mm, width 1.4 mm. Seemingly 

 identical with male except for straight, slightly downwardly curved 

 anterior spur of anterior tibia, and for penultimate abdominal seg- 

 ment, which is normal and slightly shorter than preceding segment. 



Types. — Holotype: collected in 15- watt black light trap, Saavedra 

 Exper. Sta., 60 miles north of Santa Cruz, Dept. Santa Cruz, Bolivia, 

 Jan. 4, 1960, by Robert B. Cumming, USNM 69610. (The station is on 

 the fringe of the Amazon basin, intermediate between Chaco and 

 rainforest.) Allotype: same locality, Jan. 3, 1960. Paratype, 1 female: 

 same data, Jan. 2, 1960, collection of Div. Plant Industry, Florida 

 Dept. Agric, Gainesville, Fla. 



Remarks. — Cartwrightia cartwrighti is named after my brother 

 Raymond Kenneth Cartwright, who, though not an entomologist, ac- 

 companied me and served as guide on many pleasant and productive 

 field trips. 



Cartwrightia intertribalis Islas 



Plate 3 



Cartwrightia intertribalis Islas, 1958, p. 345. 



Male. — Eight specimens: Length 3.31 mm, width 1.35 mm. Elon- 

 gate, subparallel, head, pronotum, and elytral costae covered with 

 argillaceous covering, intervals of elytra shining, dark castaneous. 

 Clypeus with double anterior edge, upper and lower margin separated 

 by fine narrow furrow extending from gena to gena, lower margin with 

 median triangular tooth directed downward; upper margin angularly 

 rounded on each side of wide shallow emargination, laterally straight 

 to genal angles, entire anterior edge narrowly shining brown, finely 

 recurved; genae small, margin emarginate, to sharp posterior angle; 



