192 REVISION OF THE THYNNID.E OF AUSTRALIA, II., 



Collection has the two basal abdominal segments wholly orange- 

 yellow, and the other segments wholly black. 



I have seen a large number of females, but hardly any with 

 accurate data as to locality, or taken in copula. They vary 

 much, most markedly in the number and development of the 

 carinse on the second abdominal segment, so much so that I should 

 have assigned the extreme forms to different species without any 

 doubt had I seen no intermediate gradations. A large series 

 with full data is much needed for a thorough knowledge of this 

 species. 



Hab.— Southern Australia from Albany, W.A., to Southern 

 Queensland. 



137. T. (LOPHOCHEILUS) HYALINATUS Westw. 



Thynnus hyalinatus Westw ., Arc. Ent. ii.2,p.l06, P. 74, figs.3,4 r 



1844(^2)- 



Thynnus wesiwoodi Lep., Hist. Nat. Insect. Hym. iii. p. 566, n.l,. 



P.35, fig.6, 1845(£). 



Thynnus graffii D.T., Cat. Hym. yiii. 107, 1897(<J). 

 Hemithynnus hyalinatus Ashm., Canad. Ent. xxxv. 1903(^2).. 



This species has the thorax of the male black, with the pos- 

 terior margin of the pronotum ferruginous. The limits of the 

 species in the direction of T. apterus Oliv., are extremely ill- 

 defined, and I fail to find any good point of distinction in the 

 female. 



The specimens I have seen are much smaller than T. apterus,. 

 of which it may prove to be a local variety. 



Hab. — Tasmania; Lambton, N. S.W. (Schneider). 



138. T. (Lophocheilus) maculosus Sm. 



Thynnus maculosus Sm., Cat. Hym. B.M. vii.p.l6,n.l8,1859((J). 



This species resembles T. apterus in appearance, but the 

 antennae are much shorter, and the scutellum is longer. The 

 nervure dividing the first cubital cell branches on the cubital 



