THE PHORIDAE OF FORMOSA. 
531 
Phora mordax n. sp. (Fig. 1.) 
Male. Length L5—2 mm. Black; antennæ, palpi, legs, pleuræ, 
and bands on first, second and sixth abdominal segments, yellow or 
brownish. Head rather thick antero-posteriorly ; front transverse, one 
half broader than high, its surface opaque and very finely and sparsely 
punctate, each puncture bearing a minute hair ; lower pair of frontal 
bristles at the median edge ; next row above of four forming a line 
that curves down a little medially, its median pair farther apart and 
the lateral one closer to the eye than to the adjacent median one ; 
next row high up, closer to the occipital row than to the row below, 
of four bristles, arranged in a nearly straight line, with the lateral 
bristle close to the eye ; occipital row of four ; all bristles stout, but 
not very long. Ocellar region simple, the ocelli in a triangle with the 
lateral ones equidistant from each other and the eye margin. Antennæ 
fuscous, third joint obovate, rounded at the tip. Arista somewhat longer 
than the head height, pubescent ; thickened basally. Palpi deep yellow, 
of medium size, with rather small apical bristles. Proboscis very short. 
Postocular cilia small, somewhat. lengthened toward the upper third of 
the eye ; cheeks each with two stout downwardly directed macrochætæ. 
Thorax above subshining, piceous black, very sparsely pubescent. One 
pair of dorsocentral macrochætæ, and two marginal scutellar bristles. 
Scutellum transverse, nearly four times as broad as long and of equal 
width to very near the lateral edge. Sides of mesonotum with few brist¬ 
les, but the bristly hairs descend upon the pleuræ one-third of the 
way to the coxa. Pleuræ yellow, except the large upper part of the 
propleura which is concolorous with the thorax. Abdomen dull black, 
except the first segment, a band (widest medially) on the second seg¬ 
ment and the basal half of the sixth segment which are ochre-yellow. 
Second and sixth segments elongated, each twice as long as the inter¬ 
mediate ones ; the former without any bristles at the sides. Hypopygium 
not exposed except the lamella which is yellow, clothed with fine black 
hairs. Venter yellow. Legs uniformly brownish testaceous ; stout, but 
with the posterior femora but little broadened. Anterior tibiæ with a 
series of four to six short bristles on the outer side, beginning at the 
basal third and extending to the tip ; longest basally. Middle tibiæ each 
with a pair of bristles on the hind side near the base and another 
externally just before the tip ; the black line along the hind edge is 
interrupted beyond the middle and the outer apical third of the tibia 
bears a number of overlapping rows of short comb-like bristles. Poste¬ 
rior tibiæ simple, bare with two apical spurs and a single weak bristle 
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