THE PHORIDAE OF FORMOSA. 
545 
reddish brown, clothed with very fine black pubescence ; with one pair 
of dorsocentral macrochætæ placed very far apart, the posterior.margin 
without other bristles, although there are about five stout ones along 
each lateral margin ; scutellum sharply narrowed at the sides, with four 
marginal bristles of which the median pair are the largest and placed 
twice as far from each other as from the adjacent lateral ones. Pleura.* 
paler brown than the mesonotum, the mesopleuræ entirely bare trough- 
out. Abdomen subopaque, dull ochre or brownish yellow, except for 
black markings as follows ; all of the second and third segments except 
a median anterior spot ; lateral spots on the fourth and fifth segments, 
and all of the sixth segment. Venter yellow, but more or less infusea- 
ted. None of the abdominal segments elongated, but the second bears 
on each side a tuft of bristly black hairs. Legs slender, dull brownish, 
the tips of the posterior femora not blackened ; middle tibiæ not or 
very obsoletely setulose ; 
hind ones with a series of 
large, sparsely placed setulæ 
along the back, just inside 
the posterior edge. Tarsi all 
long and slender. Wings 
(fig. 9) large and ample, 
tinged with brown, especially 
between the costa and third 
vein which are widely sepa¬ 
rated. Costa extending slightly but distinctly beyond the middle of the 
wing, its bristles very short and densely placed ; nrst vein ending midway 
between the humeral cross-vein and the tip of the third ; second ente¬ 
ring the costa almost perpendicularly and forming a rather large cell; 
fourth vein weakly and evenly curved ; fifth and sixth faintly bisinuate ; 
seventh distinct and a little curved. Halteres dull yellow, concolorous 
with the pleuræ. 
Three specimens Takao. Type dated March 22, 1907; another 
May 15, and a third from 300 metres altitude, April 21. 
The amount of black upon the abdomen varies soméwhat and may 
exceed or fall short of the amount mentioned for the type specimen. 
Aphiochseta atriclava n. sp. (Fig. 10.) 
Female. Length 2—3 mm. Dull brownish-yellow, the abdomen 
black, except on the margins of the segments, the hind femora tipped 
with black, and the wings slightly brown anteriorly. Head supplied with 
35 
Annales Musei Nationalis Hungarici. IX. 
