170 Mr. R. E. Turner on the 



that this is a very variable character, so I conclude that there 

 is only one species ot* Discolia in Australia with a transverse 

 oran2;e band on tiie vertex. The tuliercle at the base of the 

 second ventral segment is always well marked in this species. 



4. ScoHa commixta, sp. n. 



? Scolia soror, Sauss. et Sich. Spec. gen. Scolia, p. 126 (1864) (nee 

 Smith), 



(J. Clypeus convex, sparsely punctured, truncate at the 

 apex. Scape finely punctured ; antennae about as long as the 

 thorax and median segment combined, mucli siiorter than in 

 soror. Hi ad sparsely punctured; the front below the 

 anterior ocellus raised, smooth and opaque immediately below 

 the ocellus, then closely punctured, longitudinally and very 

 finely striated 1 etween the antennae, the striated portion 

 divided by a longitudinal sulcus which extends on to the 

 punctured portion. Tliorax sparsely and not very coarsely 

 punctuied, the mesonotum smouth in the middle and to the 

 posterior margin.; the median segment more closely and 

 coarsely punctured at the apex. Abdomen closely punctured, 

 more sparsely in the ndddle of the segments than on the sides ; 

 the first segment very broad, not constricted or depressed ati 

 the apex, tlie second ventral segment with a tubercle in the 

 middle at the base. 



Shining black, with black pubescence. ^V ings very dark 

 fuscou?, with strong blue and purple gloss. 



Length 18 mm. 



Hob. Port Dai win (J.J. Walker). 



Easily distinguished from soror by the short antennas and 

 the tubercle on the second ventral segment. 



Genus Oampsomeris, Lepel. 



Subgenus Trielis, Sauss. et Sich. 



1. Campsomeris anthracina, Burm. 



Scolia anthracina, Burm. Abh. naturf. Ges. Halle, i. pt. 4, p. 16 



(ia5:3), c?$. 

 Elis ( Trtelis) conmnguinea, Sauss. M^m. Soc. phys. ethist. nat. Geneve, 



xiv. p. 50 (1854), 6- 

 Scolia bimaculata, Sm. Cat. Hym. B. M. iii. p. 115 (1855), (S . 



1 cannot see that consanguinea is more than an aberration 

 in wdiich there is an orange spot on each side of tlie third 

 dorsal segment. This is the usual form of the male : speci- 

 mens which are wholly black seem to be rare; but the female 

 is very rarely marked with the orange spots. All the males 



