THE WOMBAT. I 3 



beginning, so much so that a dozen or twenty prints may be 

 put in one after the other, and after they have been turned 

 over another dozen may be placed in the dish, thus toning 

 twenty to thirty prints at the same time, and the toning action 

 is continued comparatively evenly until the bath is exhausted. 

 To obtain warm or brown tones about i-J grains of gold (12 to 

 13 ounces of toning solution) will be sufficient for one sheet of 

 paper when the subjects are such as have light and shade in 

 about the average proportions. (It is obvious that when prints 

 showing a larger proportion of shadows or dark portions than 

 usual are dealt with, more gold will be required to obtain the 

 same colour). The prints shown were all toned with this bath. 



I find in my practice that this bath, though keeping well 

 when albuminised papers are used, will not keep well when 

 toning gelatine papers. 



[To be Continued). 



DESCRIPTION OF TWO NEW 

 AUSTRALIAN COCCIDS. 



By James Lidgett. 



The present paper contains a description of two species of 

 coccids which have come prominently under my notice during 

 the last few months, and after careful examination and com- 

 parison, I am unable to refer them to any species hitherto 

 described. I therefore propose to consider them as new 

 species. In the genus Aspidiotns the larval pellicles are 

 normally central, so that the species I have herein named 

 Aspidiotns myoporii presents a slight variation in the pellicles 

 occupying a position slightly anterior to the centre ; otherwise 

 I see no reason for doubting its generic position. The general 

 characters of the adult female are clearly diaspid. 



Order Homoptera. 

 Family Goccidce. 

 Sub-Family Diaspidince. 

 Genus Aspidiotns, Bouche. 



Characters of genus — Female puparium circular ; pellicles 

 in the centre. Male puparium elongated, pellicles at one end ; 

 not carinated ; adult temale peg-top shape ; several groups 

 of spinnerets. 



