SUBGENUS TRICHAPION — KISSINGER 289 



furrow. Front femora 3.3 times as long as wide. Claws with acute 

 basal tooth. 



Special male characters: Tibia 2 armed with a short, blunt mucro; 

 tibia 3 armed with a long, slender, curved mucro. 



Holotype: Male (USNM 63420) from Guadalupe, Distrito Federal, 

 Mexico, in Tbomns Lincoln Casey Collection. 



Apion (Trlchapion) proclive LeConte 



Figure 4,d-g,k 



Apion proclive, LeConte, Rep. Expl. Surv. Mississippi to Pacific, vol. 12, pt. 3, 

 1860, p. 53, 1857.— Smith, Trans. Amer. Ent. Soc, vol. 11, p. 58, fig. 14, 

 1884.— Fall, Trans. Amer. Ent. Soc, vol. 25, p. 140, pi. 4, figs. 9, 9a, 9b, 15, 

 1898. 



Apion crassinasutn LeConte, Rep. Expl. Surv. Mississippi to Pacific, vol. 12, 

 pt. 3, 1860, p. 53, 1857.— Smith, Trans. Amer. Ent. Soc, vol. 11, p. 58, 1884.— 

 Fall, Trans. Amer. Ent. Soc, vol. 25, p. 141, 1898. 



Apion nunenmacheri Wagner, Nov. Zool, Tring, vol. 19, p. 97, figs. 1,2, 1912. — 

 Fall, Journ. New York Ent. Soc, vol. 26, p. 223, 1918. 



Description: Length, L70 to 2.75 mm.; width, 0.75 to L30 mm. 



Moderately robust. Black; pubescence conspicuous, fine, white, 

 sparse, denser on sides of mcsothorax and metathorax. Male beak 

 slightly shorter than head and prothorax, slightly, evenly curved, 

 moderately dilated laterally and ventrally at antennal insertion, 

 attenuate to apical third, there nearly cylindrical; basal two-thirds 

 punctured and pubescent, apex smoother, glabrous, shining. Female 

 beak one-half longer than head and prothorax combined, moderately, 

 evenly curved; slightly expanded laterally and ventrally at antennal 

 insertion, attenuating to apical third, slightly expanded laterally at 

 apex; finely punctured and alutaceous, nearly glabrous in front of 

 antennal insertion. Antennae of male inserted at distance from eye 

 one-third greater than width of frons, slightlj^ distad of basal third; 

 of female inserted at distance from eye about twice as great as width 

 of frons, at basal fourth of beak; first segment as long as next three; 

 second segment one-half longer than third, shorter than next two; 

 club 0.24 by 0.10 mm.; dorsal margin of antennal scrobe subangulate. 

 Eyes not prominent; frons of male as wide as dorsal tip of beak, of 

 female wider than dorsal tip of beak; with moderate median sulcus 

 and two lateral rows of punctures. Prothorax at base one-tenth to 

 one-fifth wider than long, middle about as wide as base, apex two- 

 thirds to three-fourths as wide as base; sides beyond slightly basal 

 lateral expansion nearly parallel to middle, rounded to constricted 

 apex; in profile dorsal surface slightly arcuate, flatter basally and 

 apically; punctation deep, 0.02 to 0.03 mm. in diameter, interspaces 

 less than diameter of punctures, alutaceous ; basal fovea shallow, short. 



