652 Di- H. Braun> on nev 



and its lateral margins nearly straight, not widened towards 

 clypeus ; the fuscous spot to wings sometimes absent. 



Synonymical Isote. 



Genus Tambusana. 



Tambusa, Dist. Insect. Transvaal, p. 216 (1908), nom. pr?eocc. 

 Tamhusana, n. nom. 



LXXII. — Two 7iew species o/ Palarus//-07?i S. Africa. 

 By Dr. H. Brauns. 



The following two PaJarus species form amongst the known 

 ISouth-African species, and together w'ith P. comheri, Turner, 

 a distinct group. 



Mr. Turner, in " Notes on Fossorial Hymenoptera. — IV.," 

 Ann. & Mag. Nat. Hist. ser. 8, vol. vii., May 1911, divides 

 the species of Palarus known to him witli certainty into five 

 groups, according to the apical abdominal segment of the 

 males. P. 2^entheri he assumes to form a sixth group. 



With the better knowledge of the females I think it will 

 be possible to form more natural groups than such prelimi- 

 narily based on males only. 



The affinities of the South-African species are, taking both 

 sexes into consideration : — 



1. Palarus o^neUi, Br., and Palarus pentheri, Br. 



2. Palarus latifrojis. Kohl. 



3. Palarus handlirschi^ Br., and Palarus turner}, Br. 



Group 3 is nearest related to P. latifrons, Kohl. The 

 main characters of this group are : — 



(J . — Seventh tergite broadly subtruncate or rounded at 

 apex and without spines. 



? c? • — Fiist tergite 7J0< sharply edged on the sides, without 

 sharp dentiform tubercle. Eyes on the vertex very narrowly 

 separated in both sexes. Abdomen hardly constricted, not 

 at all in the females. Cellula radialis of the fore wings 

 without appendix, the apex triangularly pointed or sub- 

 truncate. Habitus, especially the female, of Tac/i>/(es. 



? P. handlirsc/u', m. — Pygidium very sharply pointeil ; 

 surface of the pygidiul area finely and nearly regularly 



