1932 ] 
Notes on Tropical Phoridse 
143 
half as wide as the second, without a slit, but with a slight 
transverse impression at the base ; sixth very small. Abdo- 
men slightly, but not greatly flattened, the membranous 
segments (1-6) visible at the sides, slightly on second, but 
broadly behind, with scattered hairs set in minute black 
spots; anal tube very pale and soft. Eye in lateral view 
about half as high as the head. Antenna smaller than the 
eye, with strongly pubescent arista; palpi small, with sev- 
eral long, but delicate bristles, directed mainly laterally. 
Proboscis as long as the head, rather thick and not heavily 
chitinized. Legs rather stout, of the usual form. 
Described from two females from a nest of Atta insularis 
Guer. at Santiago de las Vegas, Havana, Cuba (S. W. 
Bromley) . 
This species differs from H. reichenspergeri Borgm. by 
the brown, not black, abdominal tergites and comparatively 
larger second tergite; also the outer bristle on the hind 
margin of the mesonotum is not weaker than the inner one. 
Since the size of the abdomen varies, the greater extension 
of the membrane cannot be regarded as a specific character. 
Ptochomyia Silvestri 
Boll. Zool. Gen. Agr., Portici, vol. 14, p. 272 (1920). 
Ibid., 1. c., p. 275 (1920). 
This most remarkable form was described from Came- 
run, Nigeria and French Guinea where it lives in the nests 
of Ancistrotermes. I have a single female specimen sent to 
me some time ago by Dr. Alfred Emerson, who received 
it with the termites of the American Museum Congo Ex- 
pedition, 1909-1915. It was collected at Niangara, Belgian 
Congo, May 20, 1913 by Herbert Lang, in a nest of Macro- 
termes (Bellicositermes) natalensis Haviland. 
Ptychomyia is clearly related to Termitoxenia and Termi- 
tomyia, especially the latter, differing in the form of the 
proboscis in which the labium is greatly enlarged and swol- 
len. The present specimen agrees closely with Silvestri’s 
description and figures although the abdominal bristles are 
much weaker than they are shown in his figures. However, 
in the description these are referred to as u setis minimis” 
which suggests that their size may have become accentuated 
