THE PHORIDAE OF FORMOSA. 
549 
apparently not highly chitinized. Postocular cilia large and coarse, 
longer near the middle of the eye ; cheeks each with a pair of stout 
macrochætæ. Mesonotum somewhat shining and clothed with fine recum¬ 
bent brownish hairs, along each lateral margin with three stout bristles ; 
one pair of clearly differentiated dorsocentral macrochætæ and two 
scutellar bristles. Scut ellum long, rounded triangular in shape, much 
paler than the mesonotum. Mesopleura entirely bare, but the propleura 
bears a conspicuous tuft of small bristles below just above the fore 
coxa. Abdomen dull black, sparsely beset with short bristly hairs which 
become longer on the apical part of the abdomen; second segment on 
each side with several long bristly hairs, none of the segments elon¬ 
gated. External genitalia small, yellow. Legs long and slender, the 
femora and tarsi not thickened ; weak yellowish brown in color. Hind 
femora quite distinctly ciliate below toward the apex ; middle and 
posterior tibiæ weakly setulose, except at base and apex where the 
setulæ are obsolete ; the hind 
ones inside, near the tip, 
with several comb-like rows 
of short appressed bristles. 
Wings (fig. 12) large, with 
the third vein far from the 
costa ; costa distinctly, but 
not greatly longer than half 
the length of the wing, its 
bristles short, fine, and very closely placed. Tip of first vein as far from 
the humeral cross-vein as from the tip of the third vein ; second vein 
ending fully its own length before the third, thus forming a large cell 
by its furcation ; fourth vein but little curved, recurved at the apex and 
ending closer to the wing tip than does te fifth which is strongly bisi- 
nuate ; sixth bisinuate ; seventh straight, distinct. Halteres pale brown, 
concolorous with the thorax. 
Two females from Takao, 300 metres elevation; April 18, 1907. 
This is a very distinct species on account of the very broad front. 
Aphiochæta æmula n. sp. (Fig. 13.) 
Female. Length 2 mm. Black, the legs piceous or brownish, the 
palpi yellowish and the wings subhyaline. Front subshining, a little 
broader than long ; sparsely beset with fine black hairs ; with median 
line and a conspicuous ocellar tubercle. Lower four frontal bristles 
proclinate, of nearly equal size, the lower pair approximate, but the 
Fig. 12. Aphiochaeta latifrons , wing. 
