SlJPPLEMElSTARY NOTES ON COCCIDAl OF CEYLON. 1031 
Adult female (a) superficially resembling Lecanium olece, but without 
conspicuous carinse. Sub-circular or broadly ovoid ; strongly convex, apex 
flattened, sides sloping steeply ; margins of anal cleft prominent. Colour 
dark purplish brown, closely studded with irregular, colourless, glassy 
granules, giving the insect a frosted appearance. Margin densely chiti- 
iious ; irregularly indented and WTinkled. Antenna either 6 or 7- jointed ; 
in the 6-jointed form ( /") the 3rd equals or exceeds the length of the three 
terminal joints together ; in the 7- jointed form (c) the 3rd and 4th are 
elongated. Legs ( g) rather slender ; the tarsus approximately equal to 
the tibia ; tibia and tarsus together markedly longer than femur and 
trochanter ; tarsal digitules slender, knobbed ; ungual digitules unequal, 
one slender and the other broadly dilated at the extremity (A). Anal 
operculum (6) approximately circular, the base and outer margin of each 
valve forming an even curve ; surrounded by a narrow, densely chitinized 
zone. Margin with a close fringe of stout, acute spines (c, d). No 
stigmatic clefts ; but opposite each spiracle is a group of three slender, 
cylindrical, truncate spines (f), of which the median is more than twice as 
long as either of the other two. Derm with large, irregularly polygonal 
cells (c). There is a distant, submarginal series of large, prominent, 
tulenlar pores (j), and a few similar pores scattered over the dorsolateral 
area. Length (under compression) 3 to 4*5 min. 
On Cinnamomum sp., Colombo ; and on an undetermined tree, Chilaw. 
Ctenochiton fryeri, n. sp. (Fig. 33.) 
Fig. 33 — Ctenochiton fryeri. (a) Antenna, X 130. (6) Mid leg, X 130. 
(c) Foot, X 150. (d) Tubular pore, X 450. (e) Dermal cells, 
X 220. ( f ) Marginal and stigmatic spines, X 450. 
Adult female ovate, depressed or moderately convex. Colour pale 
castaneous ; the dorsum studded with irregular, colourless waxy granules ; 
the granule^ projecting, on the margin, in the form of irregular delnticues. 
Antennae (a) 8-jointed ; the 5th longest and with an imperfect division 
which — if complete — would add a ninth joint ; 6th and 7th shortest. Limbs 
(h) rather small, but well developed ; tarsus approximately three quarters 
the length of the tibia ; there is a false joint in the tarsus, shortly behind 
the digitules ; tibia and tarsus together of same length as femur and tro- 
27 
