SUBGENUS TRICHAPION — KISSINGER 277 



base; sides beyond basal lateral expansion nearly parallel to middle, 

 rounded to moderately constricted apex; in profile dorsal surface 

 nearly flat; punctures deep, 0.03 mm. in diameter, interspaces less 

 than diameter of punctures, generally one-half as wide, alutaceous; 

 basal fovea punctiform, moderately deep. Elytra at humeri one- 

 third wider than prothorax at base, 2.75 to 3.00 times as long as 

 pro thorax, length to width as 11:8; intervals about twice as wide as 

 striae, nearly flat on disc, generallj^ with one row of scales, these 

 sometimes confused and appear in part as two rows of scales; striae 

 fine, deep. Scutellum triangular, 0.06 by 0.06 mm., with slight 

 median furrow. Front femora about three times as long as wide. 

 Claws with acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with moderately 

 long, subangulate mucrones. 



Material examined: 10 specimens including material determined 

 by Fall. 



Known distribution: 



United States: Arizona: Chiricahua Mis. (USNM). Colorado (Fall, 1898). 

 Illinois (MCZ). Nebraska (MCZ). 



Remarks: No type specimens were seen in either the U. S. National 

 Museum Collection or in the J. L. LeConte Collection, the two 

 collections containing most of Smith's types. I am following Fall 

 (1898) in the definition of this species, 



Apion (Trichapion) propinquicorne Fall 



Figure 2,6 



Apion ■propinquicorne Fall, Trans. Amer. Ent. Soc, vol. 25, p. 138, pi. 4, figs. 7, 

 7a, 1898. 



Description: Length, 1.67 mm.; width, 0.92 mm. 



Robust; black. Pubescence conspicuous, white, rather coarse, 

 denser on ventral surface. Male beak shorter than head and pro- 

 thorax combined, one-fifth longer than prothorax, slightly, evenly 

 curved; expanded laterallj^ at antennal insertion, apical half nearly 

 cylindrical; basal half sparsely punctured and pubescent, apical half 

 smoother, bare, shining. Female beak as long as head and prothorax 

 combined, two-fifths longer than prothorax, moderately, evenly 

 curved; apical two-thirds nearly cylindrical; shining beyond antennal 

 insertion, basal half with strong, lateral punctures. Antennae in- 

 serted at distance from eye less than width of frons, of male inserted 

 at basal sixth of beak, of female at basal one-seventh; first segment 

 shorter than next two, second segment equal to next two, club 0.17 

 by 0.06 mm. Eyes prominent; frons wider than dorsal tip of beak. 

 Prothorax at base one-fifth wider than long, middle slightly narrower 



