77 
Genus PLAGIPROSPHERYSA Town. 
Plagiprospherysa Townsend, Trans. Amer. Ent. Soc, Vol. XIX, p. 113; May. 1892. 
Our species is black, the lirst two joints of the antennae, palpi, apex 
of scutellum and sometimes the front corners of the second and third 
segments of the abdomen, yellow; three postsutural and three sterno- 
pleural inacrochaetae, two on the front side of each middle tibia near its 
middle; length, (3 to 9 mm. Georgia; Organ .Mountains and Las Cruces, 
N. Mex., Colorado, Tenino, Wash., and southern California. (Biol. 
Cent.-Amer., Diptera, Vol. II, p. 124 ; May, 1890 : Prospherysa. Plagi- 
prospherysa valida Townsend, Trans. Amer. Ent Soc, Vol. XIX, p. 
1L'3; May, 1892. Plagiprospherysa floridensis Townsend. loe. cit., p. 
114.) parr I palp is v. d. W. 
Genus METAPLAGIA Coq. 
Metaplagia Coquillett, Journal N. V. Ent. Soc, Vol. Ill, p. 1<>2; September, 1895. 
Our species is black, the tirst two joints of the antenna' and the 
palpi, yellow; three postsutural and three sternoplenral macrochaetae; 
length, 7 mm. From the type specimen. San Diego County, Cal. 
( Loe. cit., p. 103.) occidentalis Coq. 
Genus PARAPLAGIA Br. and Berg. 
Paraplagia Brauer and Bergenstamm, Zweif. Kais. Mils. Wien, V, p. 354; 1891. 
Our two speeies are black, the first two joints of the antennae and 
palpi yellow; three postsutural and three sternoplenral macrochaetae : 
Third joint of antennae at most one and one-half times as long as the 
second, third vein bristly almost to tip of discal cell, first seg- 
ment of abdomen destitute of macrochaetae; length, 6 to 8 mm. 
District of Columbia; northern Illinois, and Colorado. (Ann ales 
Soc. Eritomol. France, p. 262; 1888: Heteropterina. Paraplagia 
cinerea Coquillett, Journal X. Y. Ent. Soc., Vol. Ill, p. 101; Sep- 
tember, 1895.) spinosula Bigot. 
Third joint of* antenna' three times as long as the second, third vein 
not bristly to the small crossvein, tirst segment of abdomen bear- 
ing a pair of long macrochaetae ; front of female one and one-fifth 
times as wide as either eye. three pairs of orbital bristles, the 
median pair small, frontal bristles descending to tip of second 
antennal joint, sides of face wholly covered with short hairs 
and each bearing a row of about six macrochaetae, cheeks nearly 
one-half as broad as the eye height, arista thickened on the basal 
two-thirds, the penultimate joint one and one-half times as long 
as broad; thorax thinly gray pollinose, marked with four black 
vittre; abdomen white pollinose on bases of last three segments, 
these bearing discal and marginal macrochaetae; wings hyaline, 
