SUBGENUS TRICHAPION — ^KISSINGER 265 



prothorax, stout, nearly straight; in lateral view ventral surface 

 slopes upward slightly from antennal insertion to apical third, dorsal 

 surface slopes strongly to apex ; in dorsal view attenuate strongly from 

 antennal insertion to middle, apical half nearly parallel; sculptm^e 

 similar to male. Antennae hiserted near basal third of beak, male, 

 at basal fourth of beak, female, at distance from eye one-third greater 

 than width of frons; first segment slightly shorter than next four, 

 second equal to next two, club 0.24 by 0.12 mm. Eyes moderately 

 prominent; frons narrower than dorsal tip of beak, with a fine, very 

 deep median sulcus and one lateral row of coarser, more or less sepa- 

 rated punctures. Prothorax at base slightly wider than long, middle 

 narrower than base, apex two-thirds as wide as base; sides beyond 

 basal lateral expansion moderately converging to distad of middle, 

 rounded in apical third to constricted apex; in profde dorsal surface 

 slightly arcuate toward base, strongly arcuate in apical third; puncta- 

 tion deep, 0.06 to 0.08 mm. in diameter, interspaces narrow, sub- 

 cariniform, dull, strongly alutaceous; basal fovae linear, deep, ex- 

 tending one-thu'd length of prothorax. Elytra at humeri one-third 

 wider than prothorax at base, about 2.25 times as long as prothorax, 

 length to width as 10:7; intervals about one-half wider than striae, 

 concave, with one row of rather large, shallow punctures. Front 

 femora 3.7 times as long as wide. Claws with acute basal tooth. 



Special male characters: Tibia 2 with a short, nearly simple mucro 

 projecting in line with long axis of tibia. 



Types: Holotype male (CAS), AtlLxco, Puebla, Mexico, May, A. 

 Fenyes Collection. Allotype female, same data as holotype; both 

 mounted on same pin. One paratype, same data as holotype. 



Remarks: The large size; short, stout beak; and male secondary 

 sexual characters will distinguish this species. 



I am pleased to name this outstanding species in honor of my wife, 

 Betty, in acknowledgment of her understanding interest during the 

 course of this research. 



Apion {Trichapion) chalybaeuni Wagner 



Apion {Trichapion) chalyhaeum Wagner, Arch. Naturg. Berlin, vol. 78, p. Ill, 

 1912. 



Description: This species was described from a few specimens in 

 the Solari Collection that were not seen by the author. The following 

 notes are taken from the original description. 



Length, 1.8 to 1.9 mm. 



Closely related to A. oscillator Sharp, of same size, shape of pro- 

 thorax and elytra, and color; differs markedly in form of rostrum, 

 which in both sexes is nearly cylindrical, only at the antennal insertion 

 slightly angulate, somewhat stouter especially in female, less strongly 



