108 
Psyche 
[Sept. 
mens. The wasps recorded as 0. b r achy g aster from 
Cuba, by H. Lucas and Gundlach, were also P. nasidens. 
I have never seen the true P. brachygaster (de Saussure, 
1853) from any of the Antilles. P. nasidens is widely 
distributed throughout most of Central and South Amer- 
ica and is at present spreading outside the New World. 
It is common in Cuba, Hispaniola, Jamaica and Puerto 
Pico. In the Bahamas it has only been taken thus far in 
New Providence. I have seen a specimen labelled Miami, 
Florida, no doubt an accidental introduction. Whether 
Pachodynerus acuticarinatus (Cameron), of Texas and 
Arizona, and P. pulverulentus (Viereck), of Arizona and 
Southern California, are specifically or racially distinct 
from P. nasidens is as yet undecided. 
2. Pachodynerus jamaicensis Bequaert and Salt, 1931. 
This species is restricted to Jamaica. It includes the 
wasps recorded from there by Fox, Ashmead, and Gowdey 
as 0. tibialis, and by Gowdey as 0. guadulpensis, two 
species I have never seen from Jamaica. 
3a. Pachodynerus guadulpensis (de Saussure, 1853), 
typical form. Originally described from Guadeloupe, 
this form of the species is found in most of the Lesser An- 
tilles. I have seen it from Antigua, Montserrat, Dominica, 
Martinique, St. Lucia, the Grenadines (Canouan I.), 
Grenada, and Barbados. Published records from Ja- 
maica and Trinidad were based on misidentifications. 
Odynerus guadelupensis Dalla Torre (1904) is an emen- 
dation of 0. guadulpensis. According to the types, at 
British Museum and U. S. National Museum, Odynerus 
grenadensis Ashmead (1900) is not separable from gua- 
dulpensis; the structural characters are the same, while 
the apical bands are not actually absent on the tergites 
behind the second, as implied in the original description, 
but are dirty orange or ferruginous, instead of yellow, 
evidently an artificial discoloration. Similar discolora- 
tion may be seen in some specimens from the other is- 
lands. The dorsal face of the pronotum is sometimes 
wholly yellow, as stressed by de Saussure ; more often it 
bears on each side a small discal, triangular black spot. 
3b. Pachodynerus guadulpensis var. sancti-vincenti 
