104 THE BLOWFLIES oF NortH AMERICA 
showed that macellaria is not congeneric with any European or 
Asiatic species. Coquillett (1910, p. 526) designated Musca dux 
Escholtz as genotype for Compsomyia. 
Brauer and Bergenstamm (1894, p. 12) erected the genus 
Pycnosoma for the reception of Musca marginalis Wiedemann. 
This name is a synonym of Chrysomya through synonymy of the 
genotypes. According to Bezzi (1907, p. 543), Paracompsomyia 
Hough is also a synonym of Chrysomya. 
HEMILUCILIA BRAUER 
Hemilucilia Brauer, Akad. der Wiss. Wien. Math-Nat. Kl. Sitz- 
ber. (1) 104:598, 1895; Surcouf, Paris Mus. d’Hist. Nat. 
Nouvelle Arch. (5) 6:54, 1919; Aldrich, U. S. Natl. Mus. 
Proe. 62 (11) :6, 1922; Seguy, Paris Mus. d’Hist. Nat. Bul. 
31:440, 1925; Townsend, Rev. Mus. Paul. 15:213, 1926; 
Shannon, Wash. Ent. Soc. Proc. 28 (6) :125, 1926; Curran, 
Amer. Mus. Nat. Hist. Bull. 66:473, 1934; Townsend, Manual 
of Myiology, vol. 2, p. 163, 19384; Cushing and Hall, Wash. 
Ent. Soe. Proce. 39 (7) :196, 1937; Townsend, Manual of My- | 
iology, vol. 5, p. 128, 1987. Genotype. Musca segmentaria 
Fabricius. Monotypiec. 
Male and female. Head (pl. 1, C) with short epistoma which 
is nearly as wide as clypeus and warped forward into horizontal 
plane but not strongly curved downward after the warp; meta- 
cephalon rather flattened in profile; eye large and slightly 
oblique; frontale almost obsolete 2.0 units anterior of foremost 
ocellus; parafrontale nearly obsolete toward middle and posteri- 
orly; frontal rows of bristles obsolete at narrowest portion of 
frontale but extending anteriorly to the base of the second an- 
tennal segment and moderately diverging as they follow the 
margins of the frontale; outer vertical bristles absent in male; 
postvertical bristles weak, proclinate; female with one reclinate 
and two proclinate frontoorbital bristles; ocellar bristles of mod- 
erate size, proclinate in male, divaricate in female which also has 
two or three lesser accessory ocellar bristles posteriorly; elypeus 
almost twice as long as wide, sunken, deep, narrow, rather box- 
like; facial carina absent; parafaciale narrowed above; faciale 
rather rounded, steep, with small setae in three or four rows 
_ which ascend nearly three-fourths the distance to the antennal 
base; vibrissa only slightly above the oral margin; proboscis 
10.0 in length; haustellum 5.0; palpus long clavate; antennal 
base near eye middle when head is viewed in profile, antennae 
with bases approximated; arista with long plumosity above and 
