Vinsonia. 281 
moderately dilated. Stigmatic cleft (/g. 14) with a group of stout, somewhat 
fusiform spines, of which two or three are considerably longer than the others. 
Marginal hairs small, simple, widely separate. Dormal pores minute and 
inconspicuous. Valves of anal operculum (/g. 15) elongate ; base about one- 
third length of inner edge. Length 150 to 1°75 mm. Breadth 1:25 to 
1°50 mm. 
Adult male observed by Newstead, whose description shows it to be of 
typical Lecaniid form. 
The male puparium is described by the same author as ‘formed of the same 
glassy, cereous matter as the test of the female, and like it also as having an 
anterior and three lateral rays or arms; but there are two additional short 
posterior rays, each furnished at the extremity with three snow-white append- 
ages. Outline much more elongate. Length 1°75 to 2 mm.’ 
Nymphal test of female (jigs. 4, 5) similar in form to that of adult, but 
smaller and flatter ; the median dorsal pad and the terminal processes of the 
Yays proportionately larger (these parts remaining actually of the same size 
throughout the development of the test). Insect pale green. 
Larval test (figs. 2, 3) exhibiting nine opaque white waxy rays, the posterior 
being smaller and more slender. There are besides a pair of small, rounded, 
waxy processes on the extreme posterior margin, and a small waxy point on 
each side of the anterior ray. Dorsum covered by an opaque white pad of wax. 
All the processes of this larval covering persist throughout the subsequent 
development, and appear in the fully formed test of the adult female'as the 
terminal processes of the rays and the apical boss of the dorsum. 
Habitat (in Ceylon), on leaves of manzo, cocoanut, Garcinia spicata, Antz- 
desma bunius, Alstonia scholaris, Glycomis pentaphylla, and probably upon 
numerous other plants. 
~ Wideiy distributed throughout the tropical regions, and occurring in Europe 
in plant-houses. 
EXPLANATION OF PLATE CVI. 
VINSONIA STELLIFERA. 
a 
Ge 
. Mango leaf, with insects 272 sz/z, nat. size. 
Larva, ventral view, Xx 25. 
» dorsal view, x 25. 
. Nymphal female, ventral view, x 20. 
% dorsal view, X 20. 
. Adult female, dorsal view, x I5. 
% ventral view, X I5. 
. Early adult female, denuded of wax, dorsal view, x 15. 
. Older female, denuded of wax, dorsal view, x I5. 
5 ) 4 side view, X 15. 
Cephalic lobe, from below, x 7o. 
12. Antenna, X 250. 
13. Anterior leg, x 250. 
14. Stigmatic cleft and spines, from below, x 450. 
15. Valves of anal operculum, x 250. 
BH SQ aI AVAYD 
