16 THE VICTORIAN NATURALIST. 



Hah. — Both sexes on leaves of Acacia melanoxylon, R. Brown, 

 on Mount Difficult, (kampians, Victoria, at a height of about 

 3,700 feet. Allied to P. thompsoni, Mask., from Tasmania. 



For the more exact determination of P. jyaradelpha, the 

 following measurements in micromillimetres may be found 

 useful : — 



Antennal segments : (i) 59 ; (2) 56 ; (3) 93 ; (4) 37 to 45 ; 

 (5) 37 to 42 ; (6) 25 ; (7) 25 ; (8) 51 to 54. 



Legs: Coxa, 116; ferriur with trochanter, 232; tibia, 149; 

 tarsus, 99. 



Further specimens have been found at Myrniong by Mr. Jas. 

 Lidgett on a somewhat stunted specimen of the same tree grow- 

 ing on the edge of a creek bank which showed undisputed 

 signs of being submerged during flood times. The tree was 

 literally covered with both males and females, the snow-white 

 ovisacs of the latter being fully half an inch in length, giving 

 the appearance as if partly covered by snow. A perpendicular 

 rod-like fungus was noticed growing on some of the females 

 after gestation. 



Nests and Eggs of Australian Birds. — We have received 

 the prospectus of Mr. A. J. Campbell's proposed work on the 

 " Nests and Eggs of Australian Birds." As an author Mr. 

 Campbell is well known to members of the Field Naturalists' 

 Club and readers of the Naturalist, and to a wider circle of 

 readers by his popular articles on the same subject in the Aus- 

 tralasian. The manuscript, which is the result of thirty years' 

 personal observations in various parts of the Australian continent, 

 has now been completed, and some 200 coloured illustrations of 

 eggs have been prepared by Mr. C. C. Brittlebank. The book is 

 .to be published by subscription, and lovers of natural history 

 should not fail to enter their names for a copy of a work which 

 will, no doubt, reflect great credit both on the author and the 

 artist. 



The Power of an Insect. — " But for the Tsetse-fly the whole 

 history of South-Central Africa would be diff"erent. It would have 

 been rapidly traversed by mounted men, not nearly so much ill- 

 health would have pursued explorers and pioneers forced to travel 

 on foot, and the whole question of transport would be rendered 

 infinitely more easy, as coaches and waggons could run, and huge 

 numbers of pack animals — horses, mules, and oxen — might convey 

 goods which at present are carried on men's heads. Undoubtedly 

 the Tsetse-fly has checked the southward range of Muhammadan 

 raiders from the north." — From " British Central Africa," by Sir 

 Harry H. Johnston, K.C.B. — a book containing much information 

 of interest to lovers of nature. 



