106 THe BLOWFLIES OF NortH AMERICA 
long, pilose on upper basal surface; lower squamal lobe of mod- 
erate size, ovate, bare. 
Abdomen with discal bristles only in scattered erect hair on 
fourth segment; second, third and fourth segments each with 
a marginal row of weak short recumbent bristles; female with 
ventral membrane widely exposed. 
Male genital segments slightly flattened and situated ven- 
trally when in repose; first segment large, globose; second seg- 
ment of moderate size and rather flattened. 
Hemilucilia flavifacies (Engel), new combination 
Strongyloneura flavifacies Engel, Konowia 10 :138, 1931. (Type, 
female from ‘‘Nord-Chiquitos,’’ Bolivia, in the collection of 
Dr. E. O. Engel, Stuttgart). 
Hemilucilia fuscanipennis Aldrich (nee Macquart), U. 8. Natl. 
Mus. Proce. 62 (11) :7, 1922; Shannon, Wash.Ent. Soc. Proce. 
28 (6) :126, 1926; Curran, Amer. Mus. Nat. Hist. Bull. 66: 
473, 1934; Cushing and Hall, Wash. Ent. Soc. Proc. 39 
Geiicn i ire 
This species is usually determined as Hemilucilia fuscanipennis 
(Macquart) but is not that species. Dr. Engel’s name is ap- 
parently the correct name for this well-known and abundant 
tropical species. 
Brown species with metallic yellow-green body, orange to 
orange-brown appendages and mottled wings. 
Male. Similar in most respects to segmentaria but head with 
eight or nine frontal bristles, the rows becoming obsolete about 
half way to the ocellar triangle, the upper bristles very short and 
hairlike; front at lunule 0.24 of head width and 0.12 at vertex; 
upper posterior margin of vertex more convex; third antennal 
segment about five times as long as second. 
Thorax bright yellow green but appearing metallic bluish 
in certain lights, the humerus, postalar callosity, anterior part 
of mesopleuron greenish or bluish black; greater ampulla and 
lesser ampulla dark brown with a greenish luster; mesothoracic 
spiracle with whitish hair; metathoracic spiracle with dark 
brown hair. 
Wing (pl. 8, K) with remigium basally below without cilia. 
Legs orange brown, the color increasingly darker apically. 
Genital segments (pl. 15 A, B, C and D) as illustrated. 
Female. Similar to male except for wide front, which is black 
almost to lunule, where the color abruptly changes to bright 
orange yellow and for normal sexual differences. 
