22 PROCEEDE^GS OF THE NATIONAL MUSEUM vol. ii4 



many almost duplicate the female except for a trace of a tubercle at 

 each end of the frontal carina, an apical tooth on anterior tibia, and 

 a narrowed middle of the terminal segment of the abdomen. 



Allotype. — Female, length 7 mm., width 4 mm. The clypeus 

 differs from that of the male as follows: Relatively longer; the ante- 

 rior margin slightly truncate and only very wealdy reflexed; the 

 clypeal carina evenly elevated throughout, not higher at middle; the 

 frontal carina evenly elevated, straight except for ends slightly arcuate 

 posteriorly; surface of the clypeus transversely rugose-punctate; the 

 punctures between the rugae moderately coarse, separated by 1 di- 

 ameter or less, and except for the very fine punctures of the more 

 gentle posterior slope of the clypeal carina and the area back of the 

 frontal carina, the remaining surface similarly closely, moderately 

 coarsely, and deeply punctate. The pronotum with a similar but very 

 weak median protuberance and traces of the lateral cavities; the 

 punctation in the anterior angles generally more noticeable, being 

 about as on the liead, gradually finer medially across the anterior, 

 and gradually much finer and sparser over the disc to the base where 

 the fine punctures are generally separated by 4 to 5 diameters. Other 

 characters very similar to male except that the pygidium is more 

 widely shining apically, the anterior tibia lacks the apical tooth, and 

 the terminal abdominal segment is not narrowed medially. 



Type.— USNM 65681. 



Type locality.^ — ^La Union, El Salvador. 



Specimens examined. — 161. 



DiSTEiBUTioN. — -(See fig. 3, p. 24.) 



United States: texas: 3 c? cf, 2 9 9 , Brownsville, June 1, 1954, H. F. Howden 

 (Howden, itsnm); 1 9 , Brownsville, June 21, 1955, Allen (usnm). 



Mexico; 1 cf, 1 9 , no locality data, (usnm). chiapas: 1 cf, Cerro Huaco, 

 Sept. 19, 1949, G. HalflFter (cnc); 1 9, Chiapas, Pacific slope Cordilleras (800- 

 1000), L. Hotzon (usnm); 2 cf cf, 1 9, Tuxtla, Dr. Berendt (usnm). morelos: 

 1 cT, Cuernavaca, July 1955, N. L. H. Krauss (usnm); 1 cf , 3 9 9, Cuernavaca, 

 August 1955, cow dung, N. L. H. Krauss (usnm); 1 cT, 1 9, Cuernavaca, June 



10, 1957 (usnm); 1 cf, Cuatla, July 20, 1956, A. W. Vasquez (usnm). Jalisco: 



1 c?, L. Chapala, July 1940, L. W. Saylor (cnc). san luis POTosf: 1 cf, 

 El Salto, Aug. 3, 1949, L. J. Bottimer (ljb) ; 5 cf cf , 2 9 9 , El Salto de Agua, 

 Aug. 13-14, 1958, H. F. Howden (cnc); 2 9 9, Tamazunchale, Aug. 15, 20, 1956, 

 A. W. Vasquez (usnm). yucatan: 1 cT, 3 9 9, Temax, Gaumer (usnm). 

 Jalisco: 1 9, Guadalajara, Aug. 22, 1903 (usnm); 2 9 9, Chapala, Aug. 13-16, 

 1949, L. J. Bottimer (ljb), veracruz: 1 9 , Veracruz, Apr. 1, 1955, J. Camelo 

 (usnm); 1 (^,2 9 9, Orizaba (Veracruz?), H. T. Osborn (usnm); 1 cf, Orizaba 

 (Veracruz?), Salle coll. (usnm); 7 c? cf , 12 9 9 , Lake Catemaco, Aug. 8-16, 1960, 

 H. F. Howden (cnc); 1 cf , 1 9 , Cotaxtla, July 6, 1957, W. W. Gibson (usnm); 



2 cf c^, 1 9 , Cotaxtla, Oct. 25, 1957, W. W. Gibson (usnm); 1 cf , Cotaxtla, Sept. 



11, 1957, Campo Exp., W. W. Gibson (cnc) ; 1 cf, Cotaxtla, Nov. 11, 1957, W. W. 

 Gibson (usnm). oaxaca: 1 cf, Oaxaco, Hoege (usnm); 1 cf, 2 9 9, Tuxtepec, 

 J. Camelo G. (usnm) ; 2 9 9 , Tuxtepec, J. Camelo G., 1934 (usnm) ; 2 cf cf , 2 $ ? , 



