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



cate, deeply sinuate at the sides and slightly serrate above 

 the sinuation ; the anterior tibiae of the male are produced 

 at the outer apical angle and furnished with two long spines ; 

 the intermediate femora are feebly serrate beneath ; the 

 eighth joint of the flagellum is strongly thickened at the 

 base and excavated. The lahrum of the male has a distinct 

 longitudinal groove from the base, which is also visible but 

 less distinct in the female. 



Bembex pectinipes, Handl. 



Bembex palmata, Sm. Ann. & Mag. Nat. Hist. (4) xii. p. 298 (1873). 



J (nee Smith, 1856). 

 Bembex pectinipes, Handl. Sitzber. Akad. Wiss. Wien, cii. p. 875 



(1893). 2- 



I am not quite sure that my identification of pectinipes is 

 correct. The type of palmata is identical with Townsville 

 specimens, and differs from <£ flavifrons from Mackay in 

 the less produced and less sinuate seventh tergite, in the 

 absence of a longitudinal groove on the middle of the labrum, 

 and in the greater development of the pale markings, espe- 

 cially in the presence of a large mark on the seventh tergite 

 and of a large U-shaped mark on the mesonotum. The 

 female differs in the more convex clypeus, in which the 

 lateral grooves are almost obsolete, and in the total absence 

 of grooves on the labrum ; the pygidium has a better-defined 

 pygidial area and is less closely punctured, and the pale 

 markings are more strongly developed, especially on the 

 scutellnm, which has a transverse band, not merely lateral 

 spots as in tvpical flavifrons. 



Hab. Townsville, Q. ; Port Darwin, N.T. 



The differences between the two forms are so small com- 

 pared with the many features in common, especially in the 

 male, that I doubt if they should be treated as more than 

 local races. 



Bembex trepida, Handl. 



Bembex trepida, Handl. Sitzber. Akad. Wiss. Wien, cii. p. 759 (1893). 

 J. 



Hab. Adelaide, S.A. 



I only know the male of this species. It is very near 

 atrifrons and funebris, differing from the former in the serra- 

 tion of the intermediate femora, which reaches the apex, in 

 the yellow colour of the labrum, clypeus, and underside 



