BY W. W. FROGGATT. 285 



hatched out ten were females and two males. All the measure- 

 ments of the larva; and perfect sawfly agree with those given by 

 Messrs. Bennett and Scott of their P. PAicalypti, and I have not 

 the least doubt that Professor Westwood is right about its being 

 only a synonym. 



1. Perga polita. 



Perga polita, Leach, Zool. Misc. III. p. 115 ; Westw. P.Z.S. 

 1880, p. 363. 



This species has been taken at Tasmania, Melbourne, Hunter 

 River, and Moreton Bay, and has no doubt a wider range. 

 Leach's type is in the Macleay Museum. 



LarvK : black, covered with short white hairs, the legs, 

 shoulders, and tip of abdomen yellow. Length, 1^ inches. 



I received the larvte of this species from my father, who sent 

 tliem by post from Nundle, N.S.W. ; they arrived in good con- 

 dition on September 23rd. Taken on a eucalypt, locally known 

 as the " white gum ;'' they readily devoured the leaves of E. 

 corymhosa ; and on the 10th October betook themselves to the 

 sand, burrowing down to the bottom of the jar, where they 

 formed isolated cocoons, which, covered with particles of sand, 

 were easily overlooked unless the sand was carefully examined. 

 A solitary individual came out on the 20th December, but no 

 more emerged until 5th January, when two more made their 

 appearance, all these being males. No more coming out I 

 examined the remaining cocoons, and found them all tenanted by 

 dipterous larvae (Fam. Tacliinidce). 



3. Perga chalybea, n.sp. 



Head : antennal tubercule, two marks between the antennae, 

 labrum and outer margins of eyes yellow; jaws, eyes, and vertex 

 black ; thorax black, rugose, densely punctured, pronotum yellow, 

 fore and middle legs yellow, hind legs with apical half of femora. 



