380 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



middle, tip slightly expanded; moderately punctured in rows, tip 

 smooth and shining. Antennae of male inserted at distance from eye 

 twice as great as width of frons at basal thu'd of beak, of female at 

 distance from eye one-half greater than width of frons at basal fourth 

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

 to next two; second segment shorter than next two. Eyes not promi- 

 nent; frons wider than dorsal tip of beak, with slight, shallow median 

 sulcus and one lateral row of confluent punctures. Prothorax at base 

 one-fourth wider than long, middle and base equal in width, apex four- 

 fifths as wide as base; sides minutely expanded laterally at base, 

 nearly parallel to middle, rounded to apex which is very slightly con- 

 stricted; in profile dorsal sm'face slightly arcuate; punctation deep, 

 0.03 to 0.04 mm. in diameter, not round, interspaces about one-half 

 diameter of punctures, nearly smooth; basal fovea deep, narrow, ex- 

 tending one-fourth length of prothorax. Elytra at humeri one-half 

 wider than prothorax at base, slightly more than three times as long 

 as prothorax, length to width as 13 : 9; intervals neaily flat, a little 

 less than twice as wide as striae, with one or sometimes two irregular 

 rows of punctures, nearly smooth; striae deep, coarse. Claws with 

 acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with short, nearly 

 simple mucrones. 



Lectotype: I hereby designate the lectotype of this species as the 

 male specimen (MCZ 25082) labeled "Colorado Springs, Col., June 

 15-30, 1896, 6,000-7,000 feet, H. F. Wickham." 



Material examined: Lectotype and 7 specimens. 



Known distribution: 



United States: Colorado: Boulder, S. A. Rohmer (MCZ); Colorado Springs, 

 June 15-30, 1896, 6,000-7,000 feet, H. F. Wickham (MCZ). Kansas: (MCZ); 

 Douglas Co., 900 feet, F. H. Snow (UK). Illinois: Valmeyer, May 24, 1950, 

 M. W. Sanderson (INKS). 



Apion (Trichapion) commodum Fall 



Figure 19,a-c 

 Apion commodum Fall, Trans. Amer, Ent, Soc, vol. 25, p. 154, 1898. 



Description: Length, 3.0 to 3.3 mm. 



Moderately robust. Black; pubescence conspicuous, white, mod- 

 erately coarse, sparse, slightly denser on sides of mesothorax. Male 

 beak about as long as head and prothorax, moderately, evenly curved, 

 expanded laterally, but not abruptly, at antennal insertion, attenuate 

 to apical third; coarsely punctate. Female beak a little longer than 

 head and prothorax, slightly curved, slender, nearly cyUndrical 

 throughout, slightly expanded laterally at antennal insertion; punc- 

 tures in basal two-thirds moderately coarse, apical third finely 



