292 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ho 



two-fifths wider than prothorax at base, 2.75 times as long as pro- 

 thorax, length to width as 4:3; intervals twice as wide as striae, mod- 

 erately convex, without transverse rugae, with two rows of fine punc- 

 tures; striae deep, fine. Scutellum triangular, 0.08 b}^ 0.06 mm. 

 Claws with acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with dentate mu- 

 crones similar to those of A. glyphicum. 



Types: I hereby designate the lectotype of this species as the mvAe 

 specimen labeled La Chuparosa in the Fall Collection (MCZ 25081). 

 Cotypes are in the California Academy of Sciences. 



Material examined: Lectotype and one male. 



Known distribution: 



Mexico: Baja California: La Chuparosa; La Lagima, Sierra Laguna, Oct. 14, 

 1941, Ross and Bohart (CAS). 



Apion {Trichapion) glyphicum Sharp 



Figure 5,a-d 



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

 Curculionidae: Apioninae, vol. 4, pt. Z, p. 52, 1890. 



Description: Length, 2.5 to 2.75 mm. 



Robust. Black, elytra and prothorax slightly aeneous; pubescence 

 fine, white, sparse, on ventral surface and on sides of prothorax. 

 mesothorax, and metathorax pubescence much coarser and denser, 

 especially on the male. Male beak shorter than prothorax, slightly, 

 evenly curved, moderately expanded laterall}' and ventraDy at 

 antennal insertion; in dorsal view attenuate to apical third, sides 

 slightly diverging at apex; in lateral view attenuating from antennal 

 insertion to apex; in basal two-thirds beak with a deep, lateral, longi- 

 tudinal channel with finer punctures bearing fine scales, median dorsal 

 line impunctate, tip smooth, slighth^ shining. Female beak about as 

 long as head and prothorax, slightl}', evenly curved, dorsally nearly 

 parallel-sided throughout; in lateral view ventrally with slight expan- 

 sion at antennal insertion, thence slightly attenuate to apex; supra- 

 antennal groove evident in basal two-thirds, apical third smooth, 

 impunctate, hardly shining. Antennae inserted at distance from eye 

 one-half greater than width of frons, of male at basal third, of female 

 at basal fourth of beak; first segment of male shorter than next two, 

 of female equal to next two segments; second segment shorter tlian 

 next two; club 0.24 by 0.10 mm. Eyes moderately prominent, of male 

 slightly larger and more prominent; frons narrow, of female equal to 

 width of dorsal tip of beak, of male about five-sixths as wide as tip of 

 beak; trisulcate, with a deep median impunctate sulcus and a deep 

 intermediate lateral sulcus with shallow punctures bearing scales, 

 separated from median sulcus b3^ a narrow, convex interval, and with a 



