66 
SUPPLEMENTARY NOTES ON THE COCCID 4 OF CHYLON. 
By E. Eryest Green, F.E.S., GoverNMENT ENTOMOLOGIST. 
WITH PLATES A-—G. 
(Read before the Bombay Natural History Society on 16th 
January, 1899.) 
Since the publication of the first part of my work on the “‘ Coccipm oF 
CEYLON,” new species have come to light, belonging to genera already dealt 
with in that earlier part. I propose to notice these additions in a series of 
supplementary papers to be published, from time to time, in the Journal of 
the Bombay Natural History Society. 
Before commencing a description of the newly discovered species, I wish 
to draw attention to my earlier remarks on the preparation of specimens for 
the microscope, (vide “ Coccide of Ceylon,” Part I,p. 11), I have there advocat- 
ed the use of glycerine media in the place of canada balsam. Later experience 
shows several serious disadvantages attending the use of glycerine in any form. 
Slides mounted and sealed in England, when taken to Ceylon, were completely 
spoiled. The contents of the cells expanded and burst their bonds ; the 
medium exuding over the slide and collecting dust and dirt, from which it is 
impossible to free the mount without injury to the specimen, the cover glass 
being now quite loose. A further disadvantage is that the stain will not 
remain fixed in this medium, but is gradually dissipated, leaving the object 
practically colourless. _My present plan, which I have found entirely 
satisfactory, is to stain the object deeply, in an aqueous solution of Weigert’s 
Fuchsin (acid) : destain to required intensity in alcohol : remove the object to 
Oil of Cloves, which arrests any further loss of stain, The object is now 
mounted in canada balsam, the colour counteracting the high diffractive 
effect of this medium. When once the balsam is dry the slides can be 
repeatedly cleaned without fear of shifting either the object or the cover 
glass, 
A question of etymology may be also briefly noted here, The late 
Mr, W. M. Maskell, shortly tefere his regrettable death, remarked to me 
that the construction of the terms CoNCHASPIN® and DIaspINZ was wrong, 
He held that the roots being CHONCHAsPIs and Diaspis the derivatives should 
be CHONCHASPIDINS! and DIAsPIDIN®, respectively. The distinction may 
appear to be purely academical, but a proper grammatical formation of the 
terms used in nomenclature should always be considered, 
Genus ASPIDIOTUS. 
ASPIDIOTUS TRILOBITIFORMIS, Green, (PI. A, fig. 1.) 
Male puparium smaller and narrower than that of the female. Colour 
clear brown to brownish-white: usually situated on upper surface of leaf, 
Length 2mm, 
