Ceroplastodes 287 
CEROPLASTODES CHITON, sf. nov 
(PLATE CIX.) 
Test of adult female (jigs. 1, 2) oblong oval, narrower behind; strongly 
convex; glassy, brittle; dorsal surface with symmetrically disposed longi- 
tudinal series of irregularly polygonal waxy plates, each plate of a depressed 
conical form, with radiating ridges and striae and concentric corrugations, the 
apex sometimes submucronate ; margin closely studded with prominent conical 
points. Colourless or faintly tinged with green; the reddish brown colour of 
the shrunken insect showing through the thinner parts of the anterior half. 
Length 650mm. Breadth 350to4mm. Height 3 mm. 
Adult female differs from cajanz in the larger limbs and antennz, and in 
the proportional lengths of the joints of the latter (compare Plate CVIII. 
jig. 6 and Plate CIX. fig. 3, both being drawn to the same scale). Antennal 
formula 3, 1 (2, 4, 5), (6, 7, 8). Other characters as in cajanz. Length 3 to 
325 mm. Breadth 2 to 2°50 mm. 
In the earlier stages the plates are not so well defined, and have a granular 
surface. 
Male puparium as in cajanz. Length 2 mm. 
Adult male not observed. 
On Cassia sp. Maha Illuppalama, N.C. Province. September. 
Readily distinguishable from cajanz by its greater size, by the symmetrically 
disposed plates on the female test, and by the more elongate antenna. 
EXPLANATION OF PLATE CIX. 
CEROPLASTODES CHITON. 
Insects on twig of Cassza, nat. size. 
Test of adult female, dorsal view, x 38. 
Antenna, X 250. 
Foot, x 450. 
Stigmatic and marginal spines, x 250. 
Posterior extremity, with everted anal tube, x Ioo. 
DEEOD = 
