FLIES OF THE TRIBE LESKIINI—JAMES | 109 
The above remarks were based on one female San Rafael, Veracruz, 
Mexico, March 8 (Townsend). 
5. Genus GENEA Rondani 
Genea RONDANI, Nuovi Ann. Sci. Nat. Bologna, ser. 3, vol. 2, pp. 172-174, 1850.— 
AwpricH, Ent. News, vol. 25, pp. 210-214, 1924.—Townsrenp, Rev. Mus. 
Paulista, vol. 15, p. 212, 1927; Manual of myiology, pt. 4, p. 65, 1986; pt. 9, 
pp. 218-219, 1939. (Genotype, Genea maculivenitris Rondani, monobasic.) 
Geneopsis TowNSEND, Rey. Mus. Paulista, vol. 15, p. 212, 1927; Manual of 
myiology, pt. 4, p. 65, 1936; pt. 9, pp. 221-222, 1939. (Genotype, Geneopsis 
major Townsend, monobasic. New synonymy.) 
Geneoglossa TOWNSEND, Rev. Hnt., vol. 5, p. 225, 1985; Manual of myiology, pt. 
4, p. 65, 1986; pt. 9, pp. 220-221, 1989. (Genotype, Geneoglossa glossata 
Townsend, monobasic, New synonymy.) 
A careful study of these three genera, including the holotypes of the 
type species of the two reduced to synonymy, reveals no differences 
that might be considered generic. In his key to the Leskiini, Townsend 
uses the length of the haustellum, the strength of the ocellars, and 
size of the squamae, the presence or absence of median marginals on 
the first abdominal segment, and the length of the front tarsus of the 
female, as bases for his separation. It is significant that these are all 
relative characters, and when they are measured with a micrometer the 
supposed differences become smaller or vanish. 
The following characters are shared by all members of the genus 
known to me: 
_ Front moderately convex; vertex one-fourth to two-sevenths head 
width in female, one-fifth to one-sixth in male; frontalia as wide as 
average width of a parafrontal; clypeus distinctly warped forward; 
cheek one-fifth to one-fourth eye height. Third antennal segment 
2.7 to 3.3 as long as second and 2.5 to 3.5 as long as its maximum width; 
hairs of arista somewhat longer than maximum aristal diameter. 
Lateral postscutellar plates bare. Tarsi longer than tibiae; claws in. 
female short, in male elongated. Cell R; narrowly open. Vein R, 
with setulae to apex, those on stigmatal area sometimes more closely 
set. 
Chaetotaxy.—Inner verticals decussate; outer verticals in female. 
(except in gracilis, new species) well-developed and one-half to 
two-thirds length of inner verticals, in male sometimes differentiated, 
but weak; ocellars weak, frontoorbitals lacking in male, two proclinate 
and one or two reclinate in female; six to nine frontals, the anterior 
two or three below antennal bases. Two presutural acrosticals; 
three presutural dorsocentrals; hind presutural intraalar sometimes: 
present, though weak; three humerals; two lateroscutellars; one to 
three discoscutellars, the hind pair placed well back and almost in the 
position of an apicoscutellar; no true apicoscutellars; one ptero- 
pleural; two to seven hypopleurals. 
