280 ON A NEW AUSTRALIAN COCCID, 



ON A NEW AUSTRALIAN COCCID. 



By W. M. Maskell, F.R.M.S., 

 Core. Memb. Roy. Soc. South Australia. 



(Communicated by A. Sidney Olliff, F.E.S.) 



(Plate XV.) 



Group MONOPHLEBID^. 



Genus Ccelostoma, Maskell. 



Adult female with antennae of eleven joints : body segmented : 

 rostrum and mentum entirely absent in adult stage : anal tuber- 

 cles absent or inconspicuous : feet not fossorial. 



Adult male with facetted eyes. Abdomen without lateral tassels. 



This genus differs from Porphyrojohora, Brandt, in having eleven 

 joints in the female antenna and in the form of the feet : from 

 Monophlehus, Leach, in the absence of a rostrum in the female and 

 of abdominal tassels in the male. 



The following character has hitherto been given to the genus 

 (see Scale-insects of Neiv Zealand, p. 107) : — "adult female naked 

 active." This must now be abandoned on account of the discovery 

 in New Zealand of a species, C. assimile, in which the adult female 

 does not leave the waxy test of the second stage, but remains in 

 it and fills it with her eggs. 



The following is the first species of the genus reported outside 



New Zealand. 



Ccelostoma australe, sp.no v. 



(Plate XV., figs. 1-8.)^ 



Adult female of a dull blue-black or very dark purple colour, 

 elongated, distinctly segmented, convex : length apparently aver- 

 aging ^ inch, but some specimens observed i-each to f inch : before 



