Maskell. — On Coccidas. 69 



to be quite healthy, but I could not succeed in hatching any 

 larvae from them. 



Hab. In Australia, on Eucalyptus dumosa. Mr. French 

 sent me specimens from Mildura (Victoria). 



The blisters produced by this species are, I suppose, tech- 

 nically galls ; but really they are but nests in which the insect 

 shelters itself. The form of the female, the absence of anal 

 tubercles, and the simple anal ring sufficiently define its generic 

 position ; and it is clearly distinct from the other known 

 species. 



Sub-family MONOPHLEBIN^E. 



Genus Icerya. 



Icerya koebelei, Maskell. N.Z. Trans., vol. xxv., 1892, 



p. 215. 



I have received specimens of this insect from Mr. Froggatt, 

 which agree entirely with my former ones, except that the 

 dorsal pencil of cotton is yellow instead of white, and from 

 the margin of the body there spring a great number of long, 

 very slender, glassy, straight threads, while a few similar 

 threads spring from various regions of the dorsum. 



Genus Ccelostoma. 

 Ccelostoma immane, Maskell. N.Z. Trans., vol. xxiv., 1891, 



p. 49. 



I have received from Mr. Koebele two specimens, found 

 attached to Eucalyptus near Sydney, which seem to belong to 

 this species, and to be a rather more advanced stage than that 

 depicted in plate ix.. fig. 12, of my paper of 1891. They 

 resemble that figure in nearly every particular, but are larger, 

 and the abdomen is considerably more inflated ventrally. 

 The antennae have ten joints ; there is no rostrum ; and the 

 tarsi are much shorter than the tibiae : I am therefore con- 

 firmed in my opinion that these are early adult females of 

 C. immane, but more developed than the one shown in fig. 12 

 above mentioned. 



Mr. Newstead informs me that in the South Kensington 

 Museum there are some specimens apparently of this species, 

 labelled simply " from Australia," without any name. 



Coelostoma australe, Maskell. Proc. Linn. Soc. N.S.W., 



1890, p. 280. 



This species appears to be not uncommon in New South 

 Wales aud Queensland. Some specimens which I have 

 received have rather abundant white meal on the dorsum. 

 The early adult stage seems to have antennae of ten joints, 

 but possibly the first two are conjoined. The principal 

 feature by which the species can be distinguished (besides the 



