SUBGENUS TRICHAPION — KISSINGER 359 



inserted at basal sixth, at distance from eye equal to width of frons; 

 first segment slightly shorter than next two, second segment slightly 

 shorter than next two, club 0.22 by 0.08 mm. Eyes prominent; 

 frons narrow, about equal to dorsal tip of beak, with one row of coar se 

 punctures on either side of a rather broad, concave, m^edian area. 

 Pro thorax at base one-third wider than long, middle three-fourths 

 as wide as base, apex seven-tenths as wide as base; basal lateral 

 expansion lacking, sides converging from base to middle, then strongly 

 rounded and constricted, lateral apical margin expanded, doi'sal 

 apical margin emarginate medially; in profile dorsal surface slightly 

 arcuate; punctation minute (0.02 mm. in diameter), shallow, sparse, 

 interspaces one to three times as wide as punctures; basal fovea 

 lacking. Elytra at humeri two-fifths wider than prothorax at base, 

 three times as long as prothorax, length to w"idth as 5 :4; intervals 

 flat, four to five times as wide as striae, smooth, with minute ground 

 sculpture, with two rows of minute punctures, apparently glabrous; 

 striae ver}^ fine, moderately deep, punctures vague, widely separated, 

 apparently glabrous. Scutellum triangular, 0.06 by 0.06 mm., not 

 furcate. Front femora 3.8 times as long as wide. Claws with acute 

 basal tooth. 



Material examined: One female determined by Sharp. 

 Known distribution: 



Panama: Bugaba (type, BMNH). 



Apion (Trichnpion) oscillator Sharp 



Figure 15, g-i 



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

 Curculionidae: Apioninae, vol. 4, pt. 3, p. 64, 1890. 



Description: Length 1.6 to 2.0 mm. 



Moderately robust. Black, slightly aeneous; pubescence scant, 

 fine, slightly denser on sides of mesothorax and metepisternum. 

 Male beak equal to head and prothorax combined, moderately, evenly 

 curved; at basal fourth moderately stout, cylindrical, attenuate to 

 middle, apical half nearly cylindrical; finely, sparsel}^, deeply punctate, 

 a coarse lateral row of punctures above antennal insertion. Antennae 

 inserted at basal sixth of beak at distance from eye equal to width of 

 frons; first segment slightly shorter than next two, second segment 

 slightly shorter than next two, club 0.18 by 0.08 mm. Eyes promi- 

 nent; frons narrow, equal to dorsal tip of beak, v.dth a shallow median 

 depression and a lateral row of coarse punctures. Prothorax at base 

 more than two-fifths wider than long, at middle slightly narrower than 

 base, apex seven-tenths as wide as base; sides expanded laterally at 

 base, nearly parallel to middle, rounded to constricted apex; in profile 



483661—59 8 



