1924] 
Additions to the Phoridce of Formosa 
209 
than the other two together; third one-third as long as the 
second; second vein leaving the third at a very acute angle; 
third vein nearly straight, lying near to the costa; fourth vein 
arising at the fork, bent at the base, straight beyond; fifth bent 
just before the middle, but scarcely sinuate; seventh long, 
nearly straight. 
Type and four paratypes from Tainan, Formosa, April. 
This is a typical member of the genus with the long narrow 
front and biseriately setulose middle and hind tibise. Two species 
of Aphiochaeta known from Formosa, A. atridava Brues and A. 
flavidava may be distinguished at once by the shorter front. 
From Phalaczoto'phora jacohsoni Brues described from Java the 
present species differs most conspicuously by having the front 
punctate, not smooth and polished. 
Aphiochseta Brues. 
As in otlier parts of the world where Phoridae have been 
collected, this genus is represented by more species than all the 
other genera of the family combined, and on account of the large 
number of Formosan species, a key has been included to facili- 
tate their identification. 
Key to the Formosan Species of Aphioch^eta. 
1. Hind tibia with only a single row of setae, placed just 
inside the posterior edge 2 . 
Hind tibiae with a series of setae, sometimes only on the basal 
half, just outside the edge, in addition to the inner 
series 19 . 
2. Mesopleura bare 3 . 
Mesopleura above with a patch of bristly hairs which 
sometimes includes also a large bristle 16. 
3. Scutellum with two bristles 4. 
Scutellurn with four equal, or nearly equal bristles 14 . 
4. Costa about half as long as the wing or longer 5 . 
Costa very short, about one-third as long as the wing 
pygmcea Zett. 
