1928] Some Colombian Phoridce 13? 
long as the width of the tibia; in addition the anterior surface of 
the tibia is clothed with very minute short bristles, grouped 
more or less distinctly into transverse rows. 
Type and paratypes from Rio Frio, Magdalena, Colombia, 
October and November 1927 (George Salt); in nests of Trigona 
amalthea Olivier. 
Pseudohypocera Malloch 
Proc. U. S. Nat. Mus., vol. 43, p. 439. figs. (1912). 
Pseudohypocera nigrofascipes Borgmeier 
Zeits. Deutscher Ver. Wissensch. u. Kunst, Sao Paulo., Jahrg. 3, 
p. 132 (1922) 
Borgmeier, Arch. Mus., Nac. Rio Janeiro, vol. 25, p. 183 (1925) 
There are a number of specimens of both sexes. The apical 
abdominal segment of the female is usually retracted, but when 
exserted it is seen that although the sixth and seventh segments 
are soft and membranous, the eighth is heavily chitinied to form 
an ovipositor. This is about twice as long as wide, slightly nar- 
rowed apically. Below the surface is faintly longitudinally aci- 
culate, and above with a triangular smooth space basally and 
convergent aciculat|ions apically. It is considerably flattened in 
cross section. 
Rio Frio, Magd., Colombia; Sevilla, Magd., Colombia; 
August (George Salt), in nests of Trigona amalthea Olivier and 
Melipona interrupta Latr. 
Aphiochaeta scalaris Loew. 
This common and widespread species in the American 
tropics,-is represented by numerous specimens. Rio Frio, Magd., 
Colombia, June- July (George Salt). 
