1932 ] Phoridse Associated with Ants and Termites 137 
The female possesses a most remarkable asymetrical ovi- 
positor that shows such striking similarity to the hypopy- 
gium of the males of certain other Diptera that specimens 
of this sex were first mistaken for males. Borgmeier has, 
however, more recently found the male (Arch. Biol. Sao 
Paulo, vol. 1, 1928) and thus shown conclusively that this 
organ is in fact an ovipositor of very unique type. 
Cremersia minor sp. nov. 
$ . Length 1.4 mm., including ovipositor. Black or pi- 
ceous, lighter on the mesonotum, pleurse and legs. Front, 
abdomen above and ovipositor black ; antennae and mesono- 
tum fuscous ; palpi and legs testaceous, the pleurae consider- 
ably stained with brown ; halteres piceous, with paler stalk. 
Wings hyaline, heavy veins piceous, light ones strongly 
colored, but very delicate. Lowest pair of frontal bristles 
separated by one-fourth the width of the front, stout and 
but little divergent; second row of two large bristles set 
very close to the eyes ; third row of four equidistant, curved 
downward medially, placed high on the front, with the lat- 
eral bristles but little below the level of the lower ocellus. 
Antennae small, bluntly oval, the arista short, stout and 
scarcely pubescent. Palpi very small, with four weak bris- 
tles at the tip ; cheeks each with two rather strong bristles 
below the lower corner of the eye. Mesonotum long and 
narrow, with one pair of small dorsocentral bristles placed 
close to the hind margin ; surface clothed with conspicuous 
fine hairs, and side margins with several conspicuous 
bristles just before the base of the wing as well as a large 
one on the scapula. Scutellum about semi-circular, with 
one pair of very short bristles and an extremely minute 
bristle in front of each of these. Propleura with two bristles 
next to the spiracle ^and another near the insertion of the 
fore coxa. Mesopleurse entirely bare. Second segment of 
abdomen lengthened, the three following subequal, not 
greatly narrowed. Fourth tergite with a subapical series of 
delicate bristles, growing stronger laterally; fifth tergite 
on the margin with a series of four large bristles on each 
side and a series of about four small, delicate ones between. 
Sixth tergite much narrower than the fifth, convex and 
