CHARLES P. ALEXANDER 19 
Pronotum dark brown, whitish laterally. Mesonotal praescutum dark 
brown, thinly dusted with gray, the i)seudosutural foveae very prominent, 
elongate; scutum light gray; scutellum very pale grayish white; postnotum 
grayish medially, broadly and abruptly whitish on the sides. Pleura brownish 
gray with a very broad white band extending from behind the fore coxa to the 
base of the abdomen. Halteres In-ownish. Legs with the coxae brownish, 
more yellow at the base; trochanters dull yellow; femora dull yellow, a little 
darkened at the tip; tibiae dull yellow, the tip narrowly brown; tarsi brown. 
Wings light gray to brownish subhyaline, usually with distinct brown clouds 
as follows: stigmal, base of Rs, along the cord, cross-vein m, middle of cell M, 
above the tip of Snd A. Venation: (see plate II, figs. 9, 10) Sc varying in 
length, the distance beyond the base of Rs sometimes one-half the length of 
Rs, at other times only about one-quarter of this length. 
Abdominal tergites yellowish brown; sternites dull lirownish yellow. 
Habitat. — Peru. Holotype, cf, Matucana, Peru, altitude 
7700 feet, April 22, 1913 (C. H. T. Townsend coll.). Allotype, 
9, topotypic, altitude 7788 feet, June 14, 1914 (Parish coll.). 
Paratypes, 2(f, 19, topotypic, same data as for the allotype but 
taken June 15, 1914. 
This species agrees quite closely with (j07iomyia (Goriomyia) 
slossonae Alexander -'' but the gray head, different thoracic color- 
ation and the spotted wings will serve to separate the two forms. 
Genus MOLOPHILUS Curtis 
Molophilus capricornis sp. n. 
Color medium brown; antennae short; wings with a brown lilotch at the 
cord; ventral pleural appendage of the male hypopygium almost straight, 
pointed at its tip, the iiuier margin with obscure teeth. 
Male. — Length, 4.2 mm.; wing, 5.1 mm. 
Female. — Length, 3.9-4 mm.; wing, 4.3 mm. 
Rostrum and palpi dark brownish black. Antennae short, the segments oval, 
clothed with long, pale hairs, the organ black throughout. Head dark col- 
ored with a gray bloom. 
Mesonotal praescutum light brown; a row of hairs on either side, just inside 
the proximal end of the pseudosutural foveae ; the region anterior to the pseu- 
dosutural foveae is light yellow; ends of the pronotal scutellum light shiny 
yellow. Pleura plumbeous. Halteres pale, the elongate knob only a little 
darker. Legs with the coxae light yellowish brown; trochanters light brown; 
remainder of the legs dark brown. Wings light brown, a darker coloration 
amounting to a spot in the vicinity of the cord and caused by the abimdance 
of hairs at that place. Venation as in plate I, fig. 9. 
Abdomen dark brown. Male hypopygium with the ventral pleural append- 
age (see plate IV, fig. 3) heavily chitinized, almost straight, or the tij") directed 
" Proc. Acad. Nat. Sci. Phila., 1914, p. 588, pi. XXVII, fig. 26. 
TRANS. AM. ENT. SOC, XLII. 
