334 MR. R. K. TURNER ON THE [Feb. 15, 



eyes, posterior margin of the pronotum, a spot on the posterior 

 margin of the mesonotum, a spot on the tegulse, and a broad 

 transverse band at the base of the third dorsal segment of the 

 abdomen, ochreous yellow ; tibiae, tarsi, five basal joints of the 

 antennae, and the base of the mandibles dull ferruginous brown. 

 Wings subhyaline, slightly iridescent, broadly pale fuscous at the 

 apex of the anterior pair; nervures testaceous brown. First 

 dorsal segment clothed with greyish pubescence. 



Length 6-8 mm. 



ffab. Kuranda, Q. (Turner). January and February. 



Two specimens. 



Aporus cingulatus Fabr. 



Sphex cingulata Fabr. Syst. Ent. p. 250 (1775). 



Aporus cingulatus Sm. Oat. Hym. B. M. iii. p. 175 (1855). 



Hob. Mackay to Oooktown, Q. (Turner). 



The second abscissa of the radius is no longer than the first in 

 the typical Queensland form, but in specimens from Victoria and 

 South Australia it is much longer. As I cannot detect any other 

 appreciable difference I consider it better to treat this as a 

 geographical variation, though it is quite possible that it may 

 prove to be distinct. Southern specimens are usually larger than 

 the typical form. This is probably the species described by Kohl 

 as Pompilus apantelus, but his description is very poor. 



Aporus nigrocinerascens, sp. n. 



2 . Mandibles biclentate ; clypeus broadly truncate at the apex, 

 convex, nearly three times as broad as long, the labrum exposed. 

 Eyes almost parallel on the inner margin, a little nearer together 

 on the vertex than on the clypeus ; the ocelli in a very broad 

 triangle, the posterior pair rather further from each other than 

 from the eyes. Head very thin; pronotum not very short, 

 depressed and narrowed anteriorly. Median segment broader 

 than long, obliquely sloped posteriorly, slightly shining, with an 

 obscure median sulcus and a small triangular depression at the 

 base, the posterior angles bluntly produced. Abdomen subsessile ; 

 the first segment longer and narrower than the second, broadened 

 from the base ; apical segment elongate, pointed, sparsely punc- 

 tured. Second joint of the flagellum more than half as long again 

 as the third. Anterior tarsi with a long comb • posterior tibiae 

 spinose; tarsal ungues toothed but without a comb. Second 

 abscissa of the cubitus twice as long as the first ; radial cell broad, 

 not more than twice as long as broad ; first recurrent nervure 

 received a little before the middle of the second cubital cell, the 

 second near the apex ; cubitus of hind wing interstitial with the 

 transverse median nervure. 



Black, with short obscure cinereous pubescence on the front, 

 clypeus, margins of the pronotum very narrowly, posterior slope 

 of median segment and apical margin of two basal abdominal 



