BY ROWLAND E. TURNER. 161 



extreme apex black; two small spots at base of antennse, a small 

 one on each side on posterior margin of head, behind apex of 

 eye, anterior margin of prothorax, tegulse, a small mark on 

 posterior margin of mesothorax, a spot on mesopleurse beneath 

 forewing, a short longitudinal line in middle of scutellum, a 

 transverse line on postscutellum, a semicircular spot near base 

 of median segment, and another very minute close to apex, a 

 small spot on either side near apex; a transverse band eniarginate 

 posteriorly near apical margin on each side of abdominal seg- 

 ments 1-5 interrupted in centre, apex of tubercle beneath basal 

 segment, a broad line, narrowly interrupted in centre near apical 

 margin of segments 2-4 beneath, a spot on each side of segment 5 

 beneath and a spot at apex of coxse pale creamy-yellow. Wings 

 hyaline, nervures black. Length 14 mm. 



Hob. — Swan River, W. A. Type in Oxford University Museum. 



91. T. (Agriomyia) marginilabris Guer. 



Agriomyia marginilabris Guer., Mag. de Zool. xii. p. 3, P. 100, 

 figs.5-7, 1842(5). 



Agriomyia affinis Guer., I.e. p.4, 1842(5). 



Thynnus (Agriomyia) consanguineus Sm., Cat. Hym. B.M. vii. 

 p.24, n.58, 1859(5). 



Thynnus (Agriomyia) moestus Sm., I.e. p. 36, n.93, 1859(5; ne c9). 



5- Guerin's figure of the head shows the strongly bilobed 

 labrum characteristic of Agriomyia. I think the name affinis 

 must sink as a synonym. The species may be distinguished from 

 T. luctuosus Sm., by the ferruginous legs. There does not appear 

 to be any other distinction, and I should have treated T. luctuosus 

 as a mere variety if I had not seen the females of both forms. 



2- Head much broader than long, strongly narrowed poste- 

 riorly, the angles not rounded, compressed and slightly concave 

 on sides, smooth and shining. Pronotum broader than long, 

 finely and very sparsely punctured, anterior margin almost 

 straight with prominent angles and a short median sulcus, strongly 

 narrowed posteriorly with a well defined tubercle on each side 

 14 



