No. 1.] Original Communication. 



8. Chionaspis vitis, Green. — Some leaves of an undetermined 

 jungle plant were affected by this species which occurs in Ceylon upon 

 Vitis and Loranthus. 



9. Chionaspis separata, n. sp. (plate 1, figs. 9-12).— On tea leaves 

 from Darjeeling, are numerous conspicuous white pyriform scales 

 (fig. 9) resembling in outward appearance those of the European 

 species Ch. vaccinii. But a microscopical examination of the female 

 insect proves it to belong to the group of which Ch. aspidistra? may 

 be taken as the type, and consequently to be allied to Ch. these, from 

 which, however, it is readily distinguishable by the snowy white pu- 

 parium of the female and its much larger size, besides other less 

 conspicuous though important points. As it will not agree with 

 any of the known species, I here describe the insect under the name 

 of Ch. separata ;■— the specific name being suggested by a peculiarity 

 of the circumgenital glands noted below. 



Female puparium (fig. 10) white, sometimes tinged with pale 

 brown, opaque. Pellicles pale straw colour. Form varying accord- 

 ing to position, normally pyriform, one side often restricted by 

 pressure against a prominent vein of the leaf. Length 3 mm. 

 Breadth averaging 1*50 mm. 



Male scale similar to that of Ch. these, snowy white, strongly 

 tricarinate. Grouped as in Ch. these. 



Adult ? . — Colour of dried insect reddish brown. Form oblong 

 (fig. 11) : abdominal segments well defined and produced into lateral 

 tubercles, 2nd and 3rd each with a marginal group of spiniform 

 squames. A small group of parastigmatic glands at each spiracle. 

 Pygidium (fig. 12) with the median lobes rather small; their inner 

 edges closely approximated ; the free edge with a single notch. First 

 lateral lobes duplex ; lobules dilated at extremity. Second lateral 

 lobes with single lobule only. Squames and spines normal. The 

 usual marginal dorsal pores, with stout cylindrical ducts. A single 

 dorsal pore situated between the lower lateral gland groups and the 

 margin, and a scattered series of pores across the basal area of the 

 pygidium. Circumgenital glands in five groups. The median group 

 (in every example examined*) more or less distinctly separated into 

 two parts together containing from 10 to 12 orifices. Upper lateral 

 and lower lateral groups each with from 20 to 23 orifices. Anal 



* It is very possible that examples from other colonies of the insect may not 

 exhibit this peculiarity which may be confined to the particular brood under 

 observation. — E. E G. 



