286 NOTES 0\ THE LIFE-HISTORY OP CERTAIN SAW-FLIES, 



tibia aiid tarsi, with theexceptionof base of first tarsal joint, black ; 

 a large irregular white mark on the side of the mesothorax ; meta- 

 thorax shining blue black ; scutellum white, bisected in the centre 

 by a black impressed line; abdomen brightshining blue, secondand 

 following segments marked on the outer margin with triangular 

 white marks, anal segment white, under side luteous grey ; wings 

 vitreous, costa, stigma, and nervures ochreous. Exp. fore-wings 

 1 2 lines ; corp. 7 lines. 



Hah. — S. Australia (one ^ specimen in Macleay Museum) ; 

 Nundle, N.S.W. (laivse). 



This species comes near P. dahlhomii, Westw., and belongs 

 to Section ii. of Kirby's Classi6cation. 



Larvce : black, densely covered with white hairs, the legs and 

 tip of abdomen yellow. Length \^ inches. 



The larvae were received at the same time and from the same 

 locality as in the preceding case. They constructed the same sort 

 of cocoons as the previous species, and were about the same time 

 undergoing their metamorphosis. Five specimens all males. 



4. Perga lewisii. 



Perga lewisii, West. Trans. Ent. Soc. Lond. I. p. 234, and Pro- 

 ceedings II. p. XLiv. ; Arcan. Ent. I. p. 23, pi. 7, fig. 1 ; P.Z.S. 

 1880, p. 374. 



An interesting account of this species is given by Professor 

 Westwood from information supplied by Mr. R. H. Lewis, who 

 noticed the remarkable habit of the female's watching over her 

 young for a month or six weeks after they are hatched ; but he 

 did not record much about their metamorphosis. 



Larvae. : dirty brown, covered with short brown hairs, the legs 

 and last segment of abdomen pale yellow. Length 17 lines. 



My specimens of larvse all came from Nundle. They were said 

 to live on saplings of the " stringy bark," but fed freely on our 

 common gum leaves. They cast their skins twice, and on 10th 



