550 
CHARLES T. ERUES. 
upper slightly farther from each other than from the eye margin ; next 
row of four forming a pair at each side near the anterior angle of the 
front, placed almost one above the other and close to the eye ; middle 
frontal row but little curved downward medially, its four bristles equi¬ 
distant, with the lateral bristle close to the eye margin ; ocellar row as 
usual. Postocular cilia large and stout, of even length; each cheek with 
two stout downwardly directed macrochætæ. Facial excavation deep, 
reaching from eye to eye, the antennæ small, rounded, black; with a 
moderately pubescent arista as long as the width of the head. Palpi 
small, deep yellow, with fine bristles below and long, stout ones at the 
tips. Proboscis small, pointed, somewhat porrect. Mesonotum shining, 
clothed with fine piceous hairs ; one pair of rather small dorsocentral 
macrochætæ. Scutellum short, more than twice as broad as long, with 
one pair of large marginal bristles. Sides of mesonotum with a series 
of long appressed bristles ; 
mesopleura clothed with 
fine bristles above and 
with one strong macro- 
chæta ; propleure bare 
above the fore coxa ex¬ 
cept for two bristles. Ab¬ 
domen dull black, seg- 
Fig. 13. Aphiochaeta aemula, wing. ments one to four nar¬ 
rowly margined behind 
with yellowish white, genitalia pale yellow. All segments of approxi¬ 
mately equal length, the second without any bristles laterally, although 
the sides of the entire abdomen are clothed with delicate bristly hairs. 
Legs moderately slender, the anterior tarsi quite distinctly broadened 
and shortened ; fore legs brownish yellow, the middle and posterior 
pairs piceous. Middle tibiæ with a series of moderately long setulæ just 
inside the posterior edge, the posterior ones with a similar row of rather 
large setulæ nearly as long as the width of the tibia. Wings (fig. 13). 
of moderate size, broader than usual near the base and narrowed to 
the apex; costal vein just attaining the middle of the wing, its cilia 
moderately short and not very closely placed; first vein ending midway 
between the humeral cross-vein and the tip of the third vein ; second 
vein not very strongly divergent from the third and thus forming a 
narrow cell at the furcation; fourth vein evenly curved, far from the 
fifth at its tip, but the two are equidistant from the wing tip ; fifth 
vein straight; sixth and seventh slightly sinuate, the latter distinct, 
but not very strong. Halteres black, piceous on the pedicel. 
