5. sirex. 383 



C. Indian Species. 



41. Sirex imperialis. 

 (Plate XY. fig. 5.) 



Exp. al. 1 poll. 10 lin., long. corp. 1 poll. 2 lin. 



Uniform steel-blue, shining ; wings fusco-hyaline, with black 

 nervures, and strongly iridescent ; second brachial cell with com- 

 plete inner cross line. 



Hab. India. 

 a. 2 • (Type.) North India. Capt. Boyes. 



42. Sirex xantlms. 

 (Plate XY. fig. 7.) 



Sirex xanthus, Cameron, Trans. Ent. Soc. Loud. 1876, p. 471. 



Exp. al. 1 poll. 10 lin., long. corp. 1 poll. 3 lin. 



Testaceous yellow ; antennae and abdomen rufo-testaceous ; ocelli, 

 an impressed line on the vertex behind them, a spot between the 

 antennae, tips of mandibles, the front and sides of the mesothorax, 

 the metathorax, and the pectus black, with a large yellowish spot 

 on the sides in front. Sides of abdomen brown, visible above on the 

 sides of the terminal segment in front. Wings deep yellowish hya- 

 line, with reddish-brown nervures ; second brachial cell with no inner 

 cross line. 



Hab. India. 

 a. 2 • (Type.) Nargund. Capt. Laing. 



D. Australian Species. 



43, Sirex australis. 

 (Plate XY. fig. 12.) 



Exp. al. 1 poll. 4 lin., long. corp. 11 lin. 



Head blue, thorax and first segment of the abdomen greenish 

 blue, remainder of abdomen bronzy violet. Head and basal seg- 

 ment of abdomen finely punctured, thorax more coarsely so ; protho- 

 rax and cheeks densely hairy ; antennas with the basal half luteous, 

 and the terminal half piceous, the division between the colours not 

 sharply defined ; under surface of body duller blue ; base of ovipo- 

 sitor luteous ; coxae violet ; legs luteous. Wings hyaline, yellowish 

 hyaline beyond the middle ; second radial cell with the transverse 

 nervure only extending half across. 



Allied to S. juvencus. 

 Hab. Australia. 

 a. 2 • (Type.) Australia. J. Macgillivray. 



