18 
Psyche 
[February 
worker of boliviensis is discovered it will be necessary to separate 
the two species generically, but the female of the latter resembles 
fiUformis so closely, even to the curious Platythyrea-like sculpture, 
that had it been taken in South Africa, instead of South America, 
one would be tempted to regard it merely as the female of Mayr’s 
species. 
A NEW GENUS OF MYRMECOPHILOUS PHORID.E, 
WITH NOTES ON SOME RELATED FORMS.“ 
By Charles T. Brues. 
Among the insects obtained by Dr. William M. Mann while 
a member of the Mulford Exploration in South America, are 
several species of wingless and subapterous Phoridse. With the 
exception of a single species, all were taken in the nests of ants 
and are undoubtedly myrmecophilous. One, which proves to 
represent a new genus, occurs with Tranopelta, a hypogseic ant 
not hitherto known to harbor any phorid myrmecophiles, while 
the others are ecitophiles previously described from other parts 
of the South American continent. 
The type of the new species is deposited in the United 
States National Museum. 
Tranopeltoxenos gen. nov. (Fig. 1). 
Entirely wingless. Head seen from above wide, twice as 
broad as long; antennae widely separated, nearly round, their 
cavities separated; arista very short and thick, indistinctly 
pubescent; palpi strongly bristled; front with a series of six 
small, slightly proclinate, bristles along the anterior margin 
between the antennae, and with eight macrochaetae disposed in 
two transverse rows; of these, the anterior row curves forward 
medially, with its lateral bristle behind the eye and the posterior 
row lies close to the occipital margin. Eyes very small; ocelli 
iResults Mulford Biological Exploration. — Entomology. 
2Contribution from the Entomological Laboratory of the Bussey Institution, Harvard 
University. No. 215. 
