352 Mil. K. E. TURNER OX THE [Feb. 15, 



with a longitudinal carina ; eighth segment with a well-developed 

 apical spine. Finely and closely punctured ; the head, thorax, 

 and base and sides of the abdomen covered with short grey 

 pubescence, the second ventral segment shining and more sparsely 

 punctured. 



Black ; the labrum (except on the sides and apex), the apical 

 half of the clypeus, an obscure curved line on each side of the 

 ocelli, the anterior and intermediate tarsi, tibiae above, femora at 

 the apex above, base of the posterior tibiae and the outer orbits 

 of the eyes very narrowly yellow ; a narrow curved band, broadly 

 interrupted in the middle on dorsal segments 2-5, and a spot on 

 each side of the second and third ventral segments whitish. 

 Wings hyaline, nervures fuscous. One very short vein springs 

 from the apex of the median cell of the hind wing. 



Length 12 mm. 



2 • Sixth dorsal segment very narrowly rounded at the apex, 

 sparsely punctured and without a median area. Clypeus black, 

 the apical margin very narrowly yellow ; labrum yellow, black at 

 the extreme apex ; scape beneath, posterior margin of the pro- 

 notum, propleurae, a spot on the mesopleurae, a short narrow line 

 on each side of the disc of the mesonotum, and a small spot on 

 each side of the scutellum yellow ; a transverse spot on each side 

 of the first abdominal segment and a minute one on each side 

 nearer the middle dull creamy white. Otherwise marked as in 

 the male, but the abdominal bands are broader. 



Hab. Mackay and Cairns, Q. (Turner). 3 J , 1 $ . October 

 and December. 



Very near tuberculiventris Turn., but in that species the 

 anterior tarsi have eight spines and the seventh ventral segment 

 is different. The colour also differs considerably, especially on 

 the ventral surface of the abdomen, which is black in the present 

 species. Also allied to jlavipes Sm. 



Bembex flavipes Sm. 



Bemhex Jlavipes Sm. Cat. Hym. B. M. iv. p. 325 (1856), $ . 



d . The seventh, eighth, ninth, and tenth joints of the flagellum 

 are slightly produced at the base beneath, the eleventh is 

 broadened and flattened above and produced into a tubercle 

 beneath, the apical joint is sharply curved and terminates in an 

 acute spine. The three basal joints of the anterior tarsi are 

 broadened, but not strongly so. The tubercle of the second 

 ventral segment is truncate at the apex, resembling that of 

 B. tuberculiventris Turn, in form, and the sixth ventral segment 

 is armed with a triangular plate. Intermediate femora not 

 serrate. The clypeus is white and is very prominent at the base, 

 then almost vertically truncate to the apex, the extreme base is 

 black. 



Hab. Mackay, Q. (Turner). S 2 • October. 



Allied to the group masca Hancll., and most nearly related to 

 Uiberculiventris Turn. 



