300 PROCEEDINGS OF THE NATIONAL MUSEUM voL.no 



Material examined: Material determined by J. Balfour-Browno 

 and 150 other specimens. 

 Known distribution: 



Mexico: On lima beans taken at Phoenix, Ariz., June 9, 1922, A. H. Caldwell, 

 Jr. (USNM). Guerrero: Amula, 6,000 ft. (BMNH). Puebla: Near Huauchi- 

 nango, June 1954, D. G. Kissinger (DGK); 14 miles west of Texmelucan, July 14, 

 1953, 8,600 ft.. University of Kansas expedition (UK). Hidalgo: 24 miles north- 

 east of Jacala, June 22, 1953, University of Kansas expedition (UK). Veracruz: 

 38 miles northeast of C6rdoba, June 30, 1953, University of Kansas expedition 

 (UK). Mtdco: 7 miles south of Manzamitla, July 1, 1948, E. S. Ross (CAS); 

 Real de Arriba, Temescaltepec, June 11, 1933, 8,000 ft., E. Hinton and R. L. 

 Usinger (CAS). Distrito Federal: Guadalupe, H. F. Wickham (TLCC) ; in 

 string beans from Mexico City taken at Brownsville, Tex., Sept. 14, 1946 (USNM) ; 

 Atzcapotxalco, Aug. 16, 1921, on bean, H. F. Wickham (USNM); Tacuba, on 

 bean (USNM). 



Guatemala: Aceituno; Calderas; Quezaltenango, 7,800 ft., Volcdn de Agua; 

 Zapote (BMNH). 



Remarks: This species is a serious pest on bean crops near Mexico 

 City. 



Apion (Trichapion) griseuni Smith 



Figure 6,/ 



Apion (jriseviti Smith, Trans. Amer. Ent. Soc, vol. 11, p. 59, 1884. — Fall, Trans. 

 Amer. Ent. Soc, vol. 25, p. 147, 1898. — Kissinger, Proc, Ent. Soc. Wash- 

 ington, vol. 59, p. 40, 1957. 



Many refw'cnces in the Htevatm-e to this species actually refer to 

 Apion sayi Gyllenhal. These will be listed and reviewed under the 

 biology of the appropriate species. 



Description: Length, 2.00 to 2.35 mm.; width, 0.93 to 1.12 mm. 



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

 white, with yellowish tinge on dorsal surface, sparse, denser on sides 

 of mesothorax and metepisternum. Male beak equal to head and 

 prothorax in length, slightly, evenly curved, moderately expanded 

 laterally and slightly expanded ventrally at antennal insertion, 

 attenuate to apical third which is nearly cylindi'ical ; coarsely, spai-sely, 

 punctured, basal two-thirds with bristling pubescence, apex glabrous, 

 shining. Female beak about one-sixth longer than head and pro- 

 thorax, moderately, evenly cmwed, slightly angulate laterally at 

 antennal insertion, attenuate to middle, apical half nearly cylindrical; 

 basal third with coaree sparse punctures and short pubescence, apical 

 two-thirds smoother, dull, glabrous. Antennae inserted at distance 

 from eye slightly less than width of frons, of male at basal fourth, of 

 female at basal fifth; first segment as long as next two, second segment 

 slightly (female) to much (male) shorter than next two, club 0.21 by 

 0.10 mm. Eyes moderately prominent; frons moderately wide, with 

 deep, median sulcus and two lateral rows of fine, nearly or quite 



