Maskell. — Oil Cocciclidae. 17 



Genus Poliaspis, Maskell. 



In my paper of last year I offered certain reasons for the 

 retention of this as a separate genus, and I see no reason now 

 to alter the opinion therein expressed. At that time only two 

 species were known — P. media, in New Zealand, and P. 

 cycadis, in America. I have now to record an Australian 

 insect so clearly belonging to this genus that at least one of 

 the objections brought against my classification can exist no 

 longer. 



Poliaspis exocarpi, sp. nov. 



Female puparium white, elongated, usually nearly straight, 

 slightly dilated posteriorly : pellicles vellow\ Length about 



Male puparium white, similar to that of the female but 

 smaller ; very obscurely carinated, if at all. Length about 



Adult female brown, darkening with age : elongated, seg- 

 mented : length about y^^n. Abdomen ending in two very 

 minute and scarcely perceptible median lobes ; the margin 

 irregular and bearing at each side only four or five spiny hairs 

 set rather far apart. Pygidium exhibiting a double set of 

 spinneret-groups : the lower set composed of five groups, the 

 median having one orifice, upper laterals 18-21, lower laterals 

 25-35 : the upper set forms an arch over the other, sometimes 

 almost continuous, but usually separated into four groups, of 

 which the two outer ones have 8-12 orifices, the two inner 

 ones one or two. Many single dorsal spinnerets. 



Adult male unknown. 



Hah. In Australia, on Exocarpus ctiprcssiformis : sent by 

 Mr. French, who informs me that he has only found it in one 

 locality — Mordialloc, near Melbourne — and that the plant 

 seem.s usually to be free from scale. 



I am unable to add more plates to my paper of this year, 

 and defer a figure of this insect to a future occasion. 



^o^ 



Group LECANIDINiE. 



Subdivision LECANODIASPIDiE. 



Genus Ctenochiton, Maskell. 



Ctenochiton elssocarpi, Maskell. N.Z. Trans., vol. xvii., 

 p. 26; Scale-Ins. of N.Z., p. 67. 



The test of the male pupa of this insect is white and 



glassy. It resembles somewhat that of the second stage 



female, but is rather larger and has a longer fringe, and the 



dorsal portion is more solid, with the waxy plates almost 



2 



