538 Mr. R. E. Turner on Fossorial Ilymenoptera. 



Family Thynnidae. 

 Subfamily Diamminm. 



Diamrna hicolor, Westw. 



Dianima bicolor, Westw, Proc. Zool. Soc. London, iii. p. 53 (1835). $ . 

 Psammatha chalybea, Shuck. Trans. Ent. Soc, London, ii. 1, p, 69 



(1837), S- 

 Tachypterus fasciatus, Guer. Voy. Coq., Zool. ii, 2, p. 217 (1839). cJ. 



Not uncommon in Northern Tasmania, but I did not take 

 specimens in the south. Also common in the south-eastern 

 portions of Australia from Adelaide to Sydney. 



Subfamily Rraqigastbbin^, Ashm. 



Rhagigaster pitgionatus, Sauss. 



Rhagigaster pngionatus, Sauss. Reise Nov. Zool, ii,, Hym, p. 113 



(1867) ; Turn, Proc, Linn, Soc. N.S.W, xxxii. p. 234 (1907). $ . 



Common on Leptosjjei'mum blossom at Eaglehawk Neck in 

 February. I have had a specimen of this species from 

 Cumberland, N.S.W., but it is certainly not common on the 

 mainland. I do not know that any other species of the 

 genus occurs in Tasmania, though forms of R. unicolor, Guer., 

 are so plentiful on the mainland. Westwood, however, 

 mentions a specimen of R. unicolor sent to him as coming 

 from Tasmania. I therefore include it as Tasmanian, thougli 

 with doubt. 



Rhagigaster unicolor, Guer. 



Wiagigaster unicolor, Guer. Voy, Coq., Zool. ii. 2, p. 214 (1839), S- 

 JRhagigastei- binotaUis, Westw. Arc. Ent. ii. p. 105 (1844). $ . 



If any form of this occurs in Tasmania, it would probably 

 be the Victorian subspecies Igelli, Turn. 



Genus Eirone, Westw. 



Key to the Tasmanian Species. 



6 6. 



1. Clypeus without an apical depression or 



triangular truncation ; legs black . . , . 2, 

 Clypeus with an apical depression or tri- 

 angular truncation ; legs ferruginous 

 or bright testaceous brown ........ 3, 



2. Pronotum entirely black E. dispar, Westw. 



