JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVIll. 
chanter; tarsal cligitules slender, knobbed ; ungual digitules (e) unequal, 
one slender, the other stouter and distally expanded into a circular disc. 
Rostrum large and conspicuous. Margin (/) with a close fringe of stout, 
acutely pointed spines. No stigmatic clefts ; stigmatic spines three, 
^cylindrical, truncate, the median spine about three times as long as either 
of the other two. Dorsum crowded with moderately large, irregularly poly- 
gonal and rounded dermal cells (e). At intervals along the submarginal 
area, and distributed irregularly over the dorsum, are some conspicuous, 
prominent, globular, tubular pores (d). Anal operculum large ; approxi- 
mately circular ; surrounded by a narrow, densely chitinous zone. Length 
'2‘7o to 3 mm. 
On the bark of an undetermined tree ; Vavuniya. Collected by Mr. .J. 
C. F. Fryer. 
Closely allied to Cten, cinnamomi ; but differing in the number of 
antennal joints, in the proportions of the tibia and tarsus, in the size of the 
dermal cells, and in the form of the tubular pores. (Compare figs, 
and 33.) 
Ctenchiton olivaceum. n. sp. (Fig. 34.) 
Flo. 34 . — Ctenochiton olivaceum. (a) Adult $ , dorsal view, X d 
{h) Posterior extremity, X 30. (c) Anterior leg, X 220. 
(d) Antenna, X 220. (e) Left valve of anal operculum, X 130. 
(r) Sockets of marginal spines, X 220. (y) Marginal spines, X 220. 
Adult female (a) with the dorsum completely covered with a confused 
mass of slender, translucent, waxy processes, most of which are directed 
backwards. There are three or four stouter, bluntly conical processes on 
the medio-thoracic area. Margin with a series of larger, tapering, broader 
and flatter processes interspersed with a few delicate, silky filaments. 
^Vhen placed in boiling potash the whole of this covering comes away, 
complete in one piece. Colour of secretionary covering olivaceous green, 
darker on the median area. The sublying insect is of a pale ^castaneous 
tint. Antennse (d) small and rudimentary, consisting of three or four 
confused joints. My single example has lost all but one anterior leg (e) 
which is small and wrinkled : femur iinusually short, with the trochanter 
much compressed ; tarsus about two-thirds as long as the tibia. The 
