215 
1924] Additions to the Phoridce of Formosa 
Th ereduction of the abdominal tergites is somewhat similar to 
that of several European species, a character formerly overlooked, 
but recently described by Lundbeck and Schmitz. 
Aphiochaeta insulana Brues. 
Ann. Mus. Nat. Hungarici, vol. 9, p. 542 (1911). 
There are upwards of 150 females from Anping, Formosa, 
April to June, 1912. The species varies greatN in size, ranging 
from 1.4 to fully 2 mm. in length. 
This species resembles A. curtineura Brues from the Philip- 
pines, but there are four strong scutellar bristles, instead of two 
and the mesopleura is bare; the propleura bears a large, cons- 
picuous bristle at its posterior angle just below the spiracle. 
Six males in the collection, also from Anping, possibly rep- 
resent the other sex of this species. They are much darker with 
the thorax fuscous and the legs dull brown. The abdomen is 
black, with narrow apical whitish bands at the apices of all the 
tergites. The scutellum bears only two bristles. If these should 
prove to be the male, the species must be like a few other mem- 
bers of the genus dimorphic, the males having two and the 
females four scutellar bristles. 
Aphiochaeta brimnicans sp. nov. 
9 . Length 2 mm. Thorax above brownish yellow; front 
piceous, somewhat lighter below; abdomen black, with very 
narrow pale posterior borders on segments 1 to 4; antennae 
piceous; palpi pale yellow; pleurae fuscous, much paler below; 
legs light brownish yellow, tips of hind femora blackened; hal- 
teres pale brownish; wings distinctly tinged with brownish yel- 
low, the venation fuscous, the discal veins heavy. Front quadrate 
or barely wider than high; ocellar tubercle and median groove 
present. Only two proclinate postantennal bristles, but these are 
large and strong, set half as far from one another as from the 
eye-margin; inner bristle of lowest reclinate row on a level with 
the proclinate bristle and midway between it and the eye-margin. 
