SUBFAMILY POLLENIINAE 343 
6(3), p. 91, 1893; Hough, Ent. News 10:63, 1899; Zool. 
Bull. 2(6) :283, 1899; Williston, Manual of North American 
Diptera, p. 342, 1908; Townsend, Indian Mus. Ree. 13:200, 
1917; Senior-White, Indian Mus. Ree. 27:88, 1925; Shannon,, 
Ent. Soe. Wash. Proce. 28(6) :136, 1926; Malloch, Linn. Soe. 
N. 8S. Wales Proce. 52 :318, 1927; Lundbeck, Diptera Danica, 
vol. 7, p. 183, 1927; Séguy, Ztschr. f. angew. Ent: 14:374, 
1928; Eneyel. Ent. (A) 9:170, 1928; Malloch, Ree. Cant. 
Mus. 4(5) :318, 1930; Townsend, Manual of Myiology, vol. 2, 
p. 159, 1935; ibid., vol. 5, p. 118, 1987; Senior-White, Fauna 
of British India, Diptera, vol. 6, p. 115, 1940. Genotype. 
Musca rudis Fabricius. Original designation. 
Cephysa Robineau-Desvoidy, Histoire Naturelle des Diptéres des 
Environs de Paris, vol. 2, p. 677, 1863. Genotype. Musca 
rudis F. (= Cephysa muscidea R. D.). Sole species. 
Orizia Robineau-Desvoidy, Histoire Naturelle des Diptéres, vol. 
2, p. 678, 1863. Genotype. Musca rudis F. (= Orizta con- 
juncta R. D.). Designation by Townsend (Insecutor In- 
scitiae Menstruus 4:8, 1916). 
Male and female. Head (pl. 7, C) length at antenna slightly 
greater than at vibrissa; bucca high, nearly half eye height; epis- 
toma elongate, narrowed at vibrissa, widening below, and warped 
slightly from elypeal plane; frontale nearly obliterated in male, 
wide in female; frontal row consisting of eight or nine bristles, 
which are weak posteriorly, the rows obsolete from near the 
middle in male, diverging anteriorly as they follow the margins 
of frontale; inner vertical bristles present; frontoorbital bristles, 
two proclinate and one reclinate in female; clypeus twice as long 
as wide; facial carina apparent only between basal antennal seg- 
ments, short, narrow, low, sharp; parafaciale narrowed above 
and setose on upper half; faciale slightly convex in profile and 
rounded, almost bare; vibrissa strong, slightly above oral margin 
and separated by a distance equal to width of parafaciale op- 
posite lunule in male, slightly less in female; palpus as long as 
haustellum, stout, clavate; antennal bases slightly below. middle 
of eye seen in profile; third segment reaching four-fifths the 
distance to the vibrissa; arista thickened on basal third, with 
long cilia above to apex, and on basal half below; back of head 
with two or three rows of postocular cilia. 
Thorax with preintraalar bristles two, the posterior one 
close to suture; preacrostichal, predorsocentral and presupra- 
alar bristles two in each row, strong; pteropleuron with 
thick-set hair; postalar declivity posteriorly with a tuft of hair; 
