Mr. R. E. Turner on Fossorial IJymenoptera. 305 



tibiurum tarsorumque spinis albidis ; tegulis fuscis macula albida ; 



alis hyalinis, vcuis fuscis. 

 cJ . Femiiuc siiuilis. 

 Long., $ 10 mm., S 8 mm. 



? . Clyi)eus shilling, the a[)ic;il niar<^in transverse and de- 

 flexed ; the base ot" the cljpeus and die tront clothed witii short 

 silvery pubescence. iSecond joint ot" the fla^elhun equal to the 

 third, twice as long as the tirst; eyes separated on the vertex by 

 a distance almost equal to the combined length ot" the two 

 basal joints of the flagellum ; vertex behind the posterior ocelli 

 somewhat concave^ and divided by an obscure longitudinal 

 sulcus. Tliorax very minutely and closely punctured, sub- 

 opaque; median segment nearly twice as long as the scutellum, 

 broad, opaque, microscopically punctured, the dorsal surface 

 without a sulcus excej)t at the extreme apex. Abdominal 

 segments subopaque, microscopically punctured ; dorsal seg- 

 ments 1—4 with a narrow apical band ot" silver pubescence, 

 the margins of the segmenis under the pubescence fuscous. 

 Pygidial area broatl^ subtriangular, rounded at the apex, the 

 basal line a little shorter than tlie sides, the surface covered 

 with very coarse elongate punctures, from which spring very 

 short fusco-fcrruginous setse. Basal joint of fore tarsus with 

 five spines on the outer margin. Second abscissa of the 

 radius longer than the third ; first recurrent nervure nearer 

 to the second recurrent than to the first transverse cubital 

 nervure. 



The male is very similar to the female, but the antennal 

 joints are shorter, so that the distance between the eyes on 

 the vertex is nearly as great as the combined length of the 

 second and third joints of the flagellimi ; the seventh dorsal 

 segment is covered with silver pubescence. 



Jlab. Busselton, W.A. (T«r«er), (^ ?, January ; Cottesloe, 

 W.A. {Giles), S ? J December. 



The female is easily distinguished from other Australian 

 species by the coarse sculpture and very sparse setae of the 

 pygidial area. 



11. Tachytes tachyrrhostus^ Sauss. 



Tachytes tachi/rrhostus, Sauss. M^m. 80C. phys. & hist. uat. Geneve, 

 xiv. p. 18 (1854). (S; Sauss. Reise d. ' No vara,' Zool. ii., Hymen. 

 p. 73 (1867). 6] Schulz, Zool. Ann. iv. p. 189 (1911). cJ. 



I have been quite unable to identify this species, of which 

 the male only is described ; it is, however, certainly a 

 Tachytes, and may prove to be the male of T. fataiis, but 



