16 
Psyche 
Nests of Polistes cuhensis from Guabairo, 
Central Soledad 
[March 
Nest 
Nest 
Ndst 
Nest 
Nest 
Length of comb 
No. 1 
No. 2 
No. 3 
No. 4 
No. 5 
in cms. 
Width of comb 
19.5 
14.5 
8.0 
11.5 
19.0 
in cms. 
7.5 
9.0 
4.5 
4.0 
9.0 
No. of cells 
573 
447 
130 
197 
570 
Date collected 
Aug. 20 
Aug. 20 
Sept. 7 
Sept. 7 
Sept. 7 
No. of wasps 
64 $ $ 
912 9» 
Nest 
? (all 
? (all 
taken with nest 
9 $ $ 
empty 
5 2 ) 
2 2 ) 
No. of wasps 
which emerged 
before Sept. 17 1 
80 2 $ 
3? 2 , 
15 $ $ 
6 ? 9 
IO 9 2 , 
18 3 3 
It is interesting to note that nest No. 1 failed to produce 
any males, though it was probably the oldest nest. Five 
females from nest No. 1 and four males from nest No. 2 
were stylopized. Each contained a single parasite as fol- 
lows: 3 $ $ with a parasite under the right side of the 
third tergite, and 2 $ $ with a parasite under the left 
side of the third tergite ; 2 $ $ with a parasite under the 
left side of the third tergite, one $ with a parasite under 
the right side of the third tergite, and one $ with a para- 
site under the left side of the third sternite. Two of the 
females from nests Nos. 4 and 5 (the wasps which I cap- 
tured with these nests were not kept separate) had ap- 
parently been stylopized, and the parasites had emerged. 
Nests Nos. 2, 4, and 5 were parasitized by Polistiphaga 
fulvescens (Cress.) [R. A. Cushman], originally described 
in the genus Mesostenus. One specimen emerged from 
nest No. 2 on August 21, and on September 16 two speci- 
mens emerged from nest No. 4, and seven specimens from 
nest No. 5. Polistiphaga fulva (Cress.) [J. Bequaert], a 
North American species of this genus, is parasitic on 
Polistes fuscatus (Fabr.) var. pallipes (Lep.) [J. Be- 
quaert]. When collecting a nest of this wasp at Cold 
Spring Harbor, Long Island, New York, on September 6, 
1929, I caught a single female of the parasite. Another 
