372 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



two-thirds greater than width of frons, of female at distance from eye 

 twice as great as width of frons, in both sexes at basal one-third of 

 beak; first segment of male shorter than next three, of female equal 

 to next three; second segment shorter than next two; club 0.21 by 

 0.10 mm. Eyes moderately prominent; frons moderately wide, nearly 

 flat or with vague median depression, with three lateral rows of 

 punctures. Prothorax at base one-fifth wider than long, middle 

 slightly wider than base, apex three-fourths as wide as base; sides 

 moderately expanded laterally at base, slightly diverging to ^videst 

 point at middle, then rounded to constricted apex; in profile dorsal 

 surface nearly flat; punctures moderate, 0.03 mm. in diameter, deep, 

 interspaces narrower than diameter of punctures, convex, alutaceous; 

 basal fovea linear, deep at middle, shallow on each end, extending two- 

 fifths length of prothorax. Elytra at humeri one-third to two-fifths 

 wider than prothorax at base, 2.75 times as long as prothorax, length 

 to width as 14 : 9; intervals twice as wide as striae, flat to slightly 

 convex, with an irregular row of punctures bearing fine scales; striae 

 deep. Scutellum narrow, triangular, with slight median impression. 

 Front femora of female four times as long as wide, of male three times 

 as long as wide. Claws with acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with moderately 

 long, subangulate mucrones; front femora noticeably stouter than 

 those of female. 



Material examined: Type, female (MCZ 25089), Williams, 

 Ariz., in the Fall Collection, and 25 specimens. 



Known distribution: 



United States: New Mexico: Estancia, 1925, J. R. Douglas (USNM); 

 Terrence, 1926, J. R. Douglas (USNM). Arizona: Chiricahua Mts., Hubbard 

 and Schwarz (USNM); Graham Mts., Graham Co., 8,000 feet, Aug. 16, 1952 

 (AMNH); Pinal Mts., Gila Co. (CU); Prescott, July, G. H. Nelson (DGK); 

 Williams, Hubbard and Schwarz (USNM). 



Remarks: This species has been taken on locust at Prescott, 

 Arizona by H. F. Wickham (USNM) and G. H. Nelson (DGK). 

 One specimen in the U. S. National Museum apparently was reared 

 from a maple seed. 



Apion {Trichapion) heterogeneutn Sharp 



Figure 18 

 Apion heierogeneum Sharp, Biologia Centrali-Americana. Insecta, Coleoptera, 

 Curculionidae: Apioninae, vol. 4, pt. 3, p. 59, pi. 3, fig. 7, 1890. 

 Description: Length, 1.95 to 3.00 mm. 



Robust. Black, elytra dull, prothorax shining; pubescence fine, 

 white, sparse, coarser and denser on sides of prothorax, mesothorax, 

 and metathorax. Male beak slightly shorter than head and pro- 

 thorax, very stout; slightly, evenly curved; in dorsal view as wide as 



