THE PHORIDAE OF FORMOSA. 
543 
between them very small ; fourth vein with an even, but very slight 
curve ; fifth nearly straight ; sixth weakly bisinuate ; seventh distinct, 
nearly straight. Halteres clear yellow. 
Three females, Takao ; April, May and November 1907. 
This little species is a near relative of A. pygmaea Zett. which 
it resembles in general ap¬ 
pearance. The scutellum 
bears four bristles, however, 
and the head is black, 
which is never the case in 
specimens of pygmaea in 
which the thorax is light 
colored. Among the species 
with four secutellar brist¬ 
les, such a short costal vein 
is very unusual, although an approach is seen in the Indian A. tibia¬ 
lis Brues, a form very different in other characters. 
Aphiochæta ochracea n. sp. (Fig. 8.) 
Female. Length 2 mm. Entirely brownish testaceous or ochre- 
yellow, with only the macrochætæ and tips of hind femora black. Front 
as broad as high, faintly dusted with a white bloom and sparsely beset 
with short black hairs. Ocellar tubercle and median frontal line well 
developed. Four anterior proclinate bristles placed in two well separa¬ 
ted pairs, the anterior one of each pair smaller than the upper one 
and placed almost below it slightly toward the median line ; next' row 
of four strongly curved, the median ones twice as far from each other 
as from the adjacent lateral bristle; next row of four equidistant, foi- 
ming almost a straight line ; ocellar row normal, large. Postocular cilia 
rather weak, of moderate size, not enlarged above or below. Antennae 
deep yellow, small, almost round, with a densely pubescent arista as 
long as the head-height. Palpi large and stout, strongly bristly at the 
tips. Cheeks each with a pair of stout, downwardly directed ma¬ 
crochætæ ; also a row T of smaller bristles extending from these to the 
base of the antennae. Mesonotum subshining densely covered with short 
bristly black hairs, and fringed along the sides with stout macrochætæ ; 
one pair of dorsocentral macrochætæ scarcely distinguishable from seve¬ 
ral pairs of other bristles along the posterior margin of the mesono¬ 
tum. Scutellum evenly rounded behind, less than half as long as broad ; 
with four almost equally strong marginal bristles, the lateral ones a 
