Mr. R. E. Turner on Fossorial Hymenoptera. 439 



vespiformis, Sm., but differs conspicuously in the colouring 

 of the abdomen, in the much broader joints of the fore 

 tarsus, and in the acute spine of the eighth ventral segment. 



Bembex vespiformis, Sm. 



Bembcx vespiformis, Sm. Cat. Hym. B.M. iv. p. 327 (1856). $ d; 

 Haudl. Sitzber. Akad. Wiss. Wien, cii. p. 93 (1893). 



Hab. Adelaide {Smith), type $ ; Townsville, Q. (Dodd) ; 

 Kalamunda, W.A. (Turner); Waroona, W.A. (Berthoud). 



This species is easily distinguished by the broad band on 

 the basal dorsal segment, sometimes the second and third 

 dorsal segments also have narrow bauds, often interrupted, 

 the fourth always without a band ; scutellum with a spot on 

 each side, mesonotum immaculate. The male structural 

 characters are the very broad basal joint of the fore tarsus, 

 which has seven spines on the outer margin and is edged 

 with black near the apex ; the seventh joint of the flageilum 

 strongly excised beneath, with a strong spine at the base, 

 eighth joint with a minute spine at the base; second ventral 

 segment with a strong tubercle, sixth and seventh unarmed; 

 apical spine of the eighth stout, truncate or feebly bilobed 

 at the apex. West Australian males have the seventh dorsal 

 segment mostly, the sixth and the apex of the fifth entirely, 

 brownish yellow ; in Adelaide and Queensland specimens the 

 seventh and fifth are black, with two yellow spots on the 

 seventh in one Queensland specimen, the sixth sometimes with 

 a yellow apical band, sometimes without. It appears to me 

 that the stipes of the genitalia in the Adelaide form are 

 distinctly broader than in the West Australian specimens 

 and also somewhat different in sculpture. In Queensland 

 specimens the wings are iufuscate on the discoidal area. 



Bembex flavlfrons, Sm. 



Bembex Jlavifrons, Sm. Cat. Hym. B.M. iv. p. 324 (1856). £ . 

 Bembex saussurei, Handl. Sitzber. Akad. AYiss. YYien, cii. p. 873 

 (1893). $. 



Hab. Adelaide (Smith, Handlirsch) ; Mackay, Q. (Turner) ; 

 Port Denison, Q. (Handlirsch). 



The distinguishing characters are the deep, lateral, longi- 

 tudinal furrows on the labrum and clypeus ; the large 

 number of spines on the basal joint of the fore tarsus, eighteen 

 in the male, thirteen in the female ; the form of the seventh 

 tergite of the male, strongly produced at the apex and trun- 



