NOTKS AND KXHIBITS. 237 



Australia, in the British Museum. Also three specimens giving 

 a definite locality for this rare species of butterfly. An examina- 

 tion of these specimens sIkjws that the males are without a stigma 

 on the fore\vin<,% and that the hind tibiie are without middle 

 spurs; these characters, combined with blunt tips of the antennae, 

 place the species in the genus Mesodina Meyrick. A male from 

 Carnarvon, W.A., has the forewing much more pointed than in 

 the female; the markings above are very similar, but the orange 

 band of the hindwing is broader; beneath, the forewing is as in 

 the female, but on the hindwing there is a brown spot in the cell, 

 and a discal series of circular brown spots that are barely indi- 

 cated in the drawing of the female. A pair from Pindar, VV.A., 

 in July, are both paler above, the orange baud of the hindwing 

 reduced in size, and the cilia more uniform in colour. Beneath, 

 while the fore wings agree very well with the Carnarvon specimen, 

 the hind wings are pale yellow, with only faint traces of markings. 



Dr. H. G. Chapman shewed some living larvse of mosquitos in 

 sea-water. On April ■21st, he noticed the larvae in deep holes in 

 the rocks on the eastern side of Bradley's Head. The holes were 

 awash at high tides, but were so deep that the larva; were not 

 washed out as they passed down to the sand at the bottom of the; 

 iioles. On April 28th, the sample exhibited was collected. On 

 Mav 6th, a mosquito hatched out, and was identified by the Pre- 

 sident as Culex vigilax Skuse. In order to be certain that the 

 water was sea-water, it was analysed. Its specific gravity at 4''C. 

 was 1'0273. It contained 4-486 parts of solid matter, 2-43 parts 

 of chlorine, and 0-52 parts of sulphate pei- centum. Its freezing 

 point was - 2'38T'. These figures showed the water to be normal 

 sea-water. 



Mr. A. R. McCulloch gave notice of motion at the next 

 Monthly Meeting — " That it is desirable to call a Special General 

 Meeting of the Society, to discuss the advisableness of framing a 

 Rule to fix a time-limit for the reading of any papei- contributed 

 by a Member." 



