18 
Psyche 
[March 
fore the apex. Wings preserved as vestiges; neither fore 
wing present in the type, but one very small hind wing re- 
mains attached as an oval, apparently complete wing with 
a costal vein-like thickening, this wing reaching about to the 
tip of the propodeum. 
Type from Eastern Tennessee, collected in a nest of Pre- 
nolepis parvula Mayr, by Professor Clyde Dennis. The type 
is in the collection of the Ohio State University, Columbus, 
Ohio. 
There is another genus in North America which is very 
similar to Solenopsia. This is Auxopsedeutes first discov- 
ered by Professor W. M. Wheeler as a guest of Solenopsis 
molesta near Austin, Texas and described by the present 
writer in 1903. 2 Later, I found a second species in Eastern 
Massachusetts also in a nest of Solenopsis molesta . 3 Auxo- 
psedeutes differs from Solenopsia in having twelve joints in 
the antennse and by the less modified petiolar segment of the 
abdomen. The latter is slightly raised dorsally, but does not 
rise scale-like as in Solenopsia and its rounded dorsal boss 
lies under and not between the propodeal processes. In both 
species of Auxopsedeutes the wings are completely absent 
and not represented by vestiges. 
Still another genus, Trimicrops Kieffer should be com- 
pared with Solenopsia. Kieffer placed this in the Callicera- 
tidse 4 although it differs from all members of that family in 
the form of the head and insertion of the antennse on a shelf 
far above the clypeus as in the Diapriidse. I have never seen 
specimens of Trimicrops, but suspect very strongly that it 
also is a diapriid, quite similar to the genera discussed above. 
2 Trans. American Entom. Soc., vol. 29, p. 126. 
3 Bull. Wisconsin Nat. Hist. Soc., vol. 8, p. 82 (1910). 
4 Ann. Soc. Sci. Bruxelles, vol. 30, p. 16 (1906) and also Das Tier- 
reich, Lief, 42, p. 127 (1914). 
