6 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
Florida and Mexico. It is wholly unlike Bengalia, being a small 
Tachinid with bare arista; it is honey yellow in color, the epaulet at 
base of costa strikingly black and the small cross vein clouded; the 
prosternum is greatly swollen in both sexes, as in the Indian Therobia 
abdominalis, which is related. The male has an enormous thicken- 
ing of the costa beyond the middle, and another in the second vein 
just behind it. There are probably two or three other species of 
Ormia in America, not at present well known. 
Genus HEMILUCILIA Brauer. 
Hemilucilia Braver, Sitzungsber. Kais. Akad. Wien, vol. 104, 1895, p. 104.— 
Surcour, Revis. Musc. Test., 1919, p. 54. 
The type is Musca segmentaria Fabricius, the sole species included. 
It is much more closely related to Chrysomyia than to Bengalia, and 
is out of place in Surcouf’s group. The face is vertical and the lower 
part of head strongly developed as in Chrysomyia, from which it 
differs chiefly in having the facial ridges very high and sharp, inclos- 
ing the antennae in a deep groove; the third antennal joint is very 
long, and the vibrissae are at the oral margin, only a little approxi- 
mated to each other. The stem vein of the wing is ciliated behind, 
as in Chrysomyia, a character of decided generic value except appar- 
ently in Mesembrinella.t. Both species have the wings infuscated 
except a paler area in the middle third which does not reach the hind 
margin. Both Hemilucilia and Cochliomyia Townsend (type ma- 
cellaria Fabricius) differ from Chrysomyia in having the lower calypter 
bare above except at base, it being hairy to the edge in marginalis 
Wiedemann, the type of Chrysomyia. 
TABLE OF SPECIES. 
Humeri, postalar callosities and anterior part of mesopleura yellow; legs yellow; 
both thoracic spiracles pale yellow............-------.-- segmentaria Fabricius. 
Humeri, etc., green or blue; legs mostly black; in female the front narrowing near 
the antennae; the metathoracic spiracle blackish....... fuscanipennis Macquart. 
HEMILUCILIA SEGMENTARIA Fabricius. 
Musca segmentaria Fasrictus, Syst. Antl., 1805, p. 292.—WieDEMANN, Auss. 
Zweifl. Ins., vol. 2, 1830, p. 401. 
Chrysomyia hyacinthia RoptnEAU-DEsvorpy, Myiodaires, 1830, p. 450. 
4This character, first mentioned by Pandellé (Revue Ent., 1896, p. 213), afterwards by Villeneuve 
(Bull. Soe. Ent. France, 1913, p. 163, ete.), and later on by Rodhain and Bequaert (Bull. Sci. France et 
Belg., ser. 7, vol. 49, 1916, p. 244) is a very important one. The cilia are found on the large vein at the 
base of the wing behind the costa and basad of the humeral cross vein. I have found them in the follow - 
ing out of many genera examined: Phormia in the widesense; Chrysomyia in the wide sense; all Rhiniinae 
of Townsend’s 1917 Revision except Pollenia, which probably does not belong to the tribe; Nitellia 
vespillo Fabricius; Sarconesia chloropyga Wiedemann; Phrissopodia splendens Macquart; Sarconesiopsis 
caerulea Townsend; Chlorobrachycoma splendida Townsend; Hemilucilia and Chloroprocta. They uever 
occur in Lucilia and Calliphora. 
