72 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XIII. 
the tissues of the plant. Iam inclined, with Prof, Cockerell, to consider 
that the characters of the group are of a nature to warrant generic rank. 
The structure of the puparium conforms to that of Aspidiotus, though the 
male scale is usvally rather more elongate, with the pellicle quite at the 
anterior extremity. The female has often a horny derm, the margin of the 
pygidium being particularly dense, There are no squames and, instead of 
the normal lobes, there are usually chitinous expansions of the margin. 
The adult male has not yet been observed. 
The genus at present contains secretus, Ckll,, inusitatus, Green, and 
bambusarum, Ckll. I have now to adda fourth species, also occurring on 
bamboo, 
ODONASPIS CANALICULATUS, n. sp. (PI. B, figs, 6,7, 8, and Pl. C, fig. 9.) 
Female puparium (fig. 6) very dense and compact: irregularly circular: 
black : pellicles yellowish, the second often concealed beneath the black 
secretionary layer. From the surface proceed numerous curling white 
filaments, which give to the scale a slightly hoary appearance. Diameter 
1°50 to 1°75 mm. 
Male puparium (fig. 7) elongate : outline often sinuous : both pellicle and 
secretionary area black, the pellicle situated at anterior margin Length 
150 mm, Breadth 0°50 mm. 
Adult female of normal form: broadest across metathorax, . 
Early adult (fig. 8) pale yellow, with reddish pygidium. Older examples 
more uniformly suffused with reddish-fulvous, and strongly chitinised, 
Spiracles each with a crowded group of parastigmatic glands. Segments 
well defined. Pygidium (fig. 9) without definite lobes, but with a 
continuous irregularly serrate or dentate chitinous expansion of the 
margin. A broad median cleft, and deep indentations at the junctions of 
the suppressed segments, The marginal expansion is marked off from the 
body of the pygidium by a narrow denser zone which follows the outline 
and extends inwards at the junctions of the segments, Squames absent, A 
fine but rather long spine, situated dorsally, on each side of the median cleft, 
Other spines at intervals, placed ventrally. From the median cleft proceeds 
a conspicuous cylindrical canal, extending upwards almost to the centre of 
the pygidium, where it terminates in a brush of small tubular ducts. No 
cirsumgenital glands, Both surfaces closely dotted with minute circular 
pores with thickened rims. Anal aperture near the base of the pygidium. 
Length 1 t0 150mm. Breadth 0°87 to 1mm. 
Adult male unknown, 
Habitat.—Concealed beneath the sheathing bracts at base of branches of 
various kinds of bamboo. Pundaluoya: Nuwara Eliya, This species is well 
marked by the median canal opening on to the extremity of the pygidium: 
a character which I have not seen in any other member of the subfamily, and 
which had suggested the specific name of the insect. 
