226 Transactions.— Zoology. 
which was it likely to have come. Whether it is a new species, or identical 
with one in Europe, it seems probable that it has not been introduced here 
first in the out-of-the-way locality where I found it. 
Planchonia would seem to link the Lecanide to the Coccide even better 
than Kermes. 
2nd Subsection.—MonopsLesip2. 
(Trans., vol. xii., p. 294). 
Antenne of eleven joints in the adult female. 
1st Genus, Icerya, Signoret. 
(Trans., vol. xi., p. 220). 
Mr. Comstock informs me that a species, which he takes to be my Icerya 
purchasi (Trans., vol. xi., p. 221), is committing great ravages in California, 
on limes, oranges, etc., and he has some suspicion that it arrived there from 
Australia. This, I think, is not at all unlikely. In describing the species 
in 1878 I mentioned that it had only lately appeared in Auckland, and : 
found it on an Australian plant, the kangaroo acacia. When in Australia 
a few months ago, I observed at Ballaarat an insect certainly an Teerya but 
I think not J. purchasi: but I had no opportunity of bringing away @ single 
specimen. As mentioned in my first paper, the Mauritian Icerya differs 0 
some particulars from ours: probably also in Australia the genus may have 
several representatives, of which one has travelled to California and New 
Zealand.* 
2nd Genus, Ccoelostoma, mihi. 
Celostoma zealandicum, mihi. 
(Trans., vol. xii., p. 294.) ag 
The young insect, adult female and adult male of this species, 
correctly described in my paper in vol. xii.; but the second stage of the 
female is incorrect. At p. 297 of that volume I mention that Calostoma 
was found at Lyttelton “interspersed with another curious Coceid :”” this 
other turns out to be the second stage of the female Calostoma. If, however 
Thad not actually extracted a fullgrown Celostoma from this stage, S¢e? it, 
that is, actually emerge, I should not have imagined the possibility that the 
two were really one and the same insect at different ages, so much do they 
differ from each other. : 
In the second stage, the female is torpid, stationary, enclosed in @ solid, 
hard, round test or shell of thick yellow wax. Some of these tests (fig- 23) : 
attain the size of a large pea; they are very strong and thick ; the wax 15 
not soluble in alcohol. Often from an orifice at one end a long white seta 
* Since writing this paper I have received from Dr. Hector specimens of Pe ree 
from Napier. It had evidently travelled thither either from Auckland or 
was greatly damaging Acacia decurrens. il 
