324 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



thorax at base slightly to one-fourth wider than long, middle slightly 

 narrower than base, nearly parallel to middle then rounded to con- 

 stricted apex; in profile dorsal surface nearly flat; punctation 0.03 mm. 

 in diameter, deep, interspaces less than dia,meter of punctures; basal 

 fovea deep, elongate, extending to middle of prothorax. Elytra at 

 humeri one-third wider than prothorax at base, 2.75 times as long 

 as prothorax, length to mdth as 10:7.5; intervals flat, twice as wide 

 as striae, not shining, with a single row of fine punctures bearing fine 

 scales; striae deep with a single row of fine scales. Scutellum tri- 

 angular, 0.07 by 0.05 mm., with a shallow median furrow. Front 

 femora of female 3.5 times as long as wide, of male 2.5 times as 

 long as wide. Claws with acute basal tooth. 



Special male characters: Tibia 2 with a fine mucro; femora stouter 

 than those of female, femora 1 and 3 are 2.5 times as long as wide, 

 femur 2 is 2.25 times as long as wide. 



Material examined: T3T)e, male (MCZ 25078), Chiricahua Mts., 

 Ariz., in Fall Collection, and 25 specimens. 



Known distribution: 



United States: Arizona: Chiricahua Mts. (MCZ, USNM); Santa Rita Mts,, 

 Madera Canyon, June 21, 1953, A. and H. Dietrich (CU), 



Apion {TricJiapion) cccentricum Fall 



Apion eccenlricum Fall, Journ. New York Ent. Soc, vol. 26, p. 220, 1918. 



Description: Length, 2.0 to 2.2 mm. 



Moderately robust. Black; elytra with faint bluish luster; pubes- 

 cence white, fine, very sparse, uniform on dorsal surface, denser and 

 coarser on sides of mesothorax, denser on sides of prothorax and meta- 

 thorax. Male beak slightly shorter than head and prothorax com- 

 bined, slightly more than one-half longer than prothorax, moderately, 

 evenly curved; in lateral view expanded ventrally at antennal inser- 

 tion, attenuate to tip; in dorsal view slightly expanded laterally at 

 antennal insertion, attenuating toward apex, apex slightly expanded, 

 sides compressed at apical third; strongly punctate in rows to near 

 apex, punctures bear scales to near apex, apex smooth, bare. Female 

 beak two-fifths longer than head and prothorax combined, twice as 

 long as prothorax, moderately, evenly curved; in lateral view stout 

 in basal third, attenuating to apical third and nearly parallel to tip; 

 in dorsal view stouter at base and nearly parallel-sided, attenuating 

 to beyond middle, shghtly compressed before tip; punctures strong, 

 in rows, pubescent in basal two-thirds, apex smoother, bare. Antennae 

 of male inserted at basal third of beak at distance from Qje twice as 

 great as width of frons, of female inserted slightly distad of the basal 

 third at distance from eye 2.5 times as great as width of frons; first 

 segment of male equals next three, of female slightly shorter than 



