BY ROWLAND E. TURNER. 129 



apical margin of first segment depressed, with a transverse carina 

 before it; second segment with four transverse carinas, including 

 the raised apical margin; segments 3-5 with a feebly raised, 

 curved mark on each side before apical margin. Pygidium very 

 narrow, deflexed posteriorly and very slightly widened to apex. 

 Pale ferruginous-brown, posterior half of pronotum, mesonotum, 

 dorsal segments of abdomen, except the raised marks and carinas, 

 and tibiae pale testaceous-yellow. Length 4-5 mm. 

 Hob, — Mackay, Q. (Turner; ^9 in cop.). 



51. T. (Aeolothynnus) tasmaniensis Sauss. 



Thynnns (Agriomyia) tasmaniensis Sauss., Reise d. Nov. Zool. 

 ii. l,Hym. p.119, n.6, 1867( ( J). 



J. Saussure's description is sufficient. All specimens I have 

 seen from the mainland have yellow marks on the fifth segment 

 of the abdomen as well as on the four basal segments. 



9. Head subquadrate, very slightly narrowed behind eyes, 

 smooth and shining, with a depression on each side between eye 

 and base of antennas which are inserted very near together. 

 Thorax and median segment smooth and shining; pronotum a 

 little narrower than head, rather broader than long, depressed 

 anteriorly, centre raised and subtuberculate. Mesonotum very 

 narrow; median segment broadened from base, obliquely truncate 

 posteriorly, angles at base of truncation rounded, surface of the 

 truncation delicately punctured. First abdominal segment raised 

 on apical margin, with a groove before it, giving the appearance 

 of a transverse carina before apex; second segment with three 

 transverse carinas and apical margin raised; segments 3-5 delicately 

 aciculated at base, sparsely punctured at apex, with a slightly 

 raised curved mark on each side before apical margin. Pygidium 

 lanceolate, epipygium very narrow and deflexed to apex, margins 

 of hypopygium reflexed near apex, causing a slight widening of 

 pygidium. Ferruginous; abdomen stained with fuscous-brown. 

 Length 5-6 mm. 



Hob. — Tasmania (Saussure); Sydney, N. S.W. 



Type of 9 in Oxford University Museum. 

 12 



