260 Memoirs of the Indian Museum. [Vor. VI, 
MORPHOLOGICAL DESCRIPTION. 
Apterous viviparous female.—Body ovate or pyriform, in fat specimens somewhat 
flask-like ; thick and rounded behind about the region of the cornicles, gradually 
narrowing towards the head. 
The prevailing colour is variegated black and white. 
Head quite black, bearing one white spot about the middle of the posterior 
edge; twice as broad as long. On either side of the median line there are two slight 
elevations with radiating hairs placed upon small tubercles. The front is flat and 
hairy. 
Eyes black, with very small ocular tubercles. 
The antennae rest directly upon the head; the basal two articles concolorous 
with the head ; the proximal halves of articles III, IV and sometimes of V reddish- 
brown, the rest black. There is a slight curvature beyond the basal two joints; the 
last segment is swollen and bears the nail-like spur. On the whole the antennae 
are short, about one quarter the length of the body ; tuberculate hairs are scattered 
over the surface. 
Length proportions :—- 
IIL.- IV VE | Vi: 
30 105) 14 | Dar 
Lengths .. 0:50 0°25 OFZ i 0-12 +0°07(=0'19) mm. 
Sensoria.—From 3 to 5 large sensoria are found on the distal quarter of the 3rd 
article and from I to 3 on the 4th. One primary sensorium on the 5th and another 
with a few more scattered around it on the 6th. The hair-rims are not distinct in 
any. 
Prothorax well defined, somewhat rectangular; it bears two |_-shaped broad 
bands, the transverse limbs on which are longer and meet at their ends a black 
rounded elevation beset with hairs, near the posterior angles; the other limbs are 
shorter, slightly converging towards the middle of the anterior border. Between them 
they enclose a mealy triangular spot, the base of which is the middle of the posterior 
border; the latter bears two more smaller white spots. 
In the angles of these bands, which face outwards, there is one white spot, the 
centre of which is occupied by another black hairy spot. On the pleurae, :.e. the 
lateral side just above the coxae which are ventral, there is a distinct lateral tubercle. 
Mesothorax separated from the prothorax by a black line extending over the 
anterior border; at its ends near the lateral edge it bends at right angles into an 
elongated, hairy black spot on either side. There is a very large pair of black dorsal 
tubercles, somewhat flattish and hairy ; each bears in front one black spot and another 
on the dorsal space which is grayish-white. The pleurae are very dark black and even 
encroach upon the dorsal surface. On the groove behind there is another spot behind 
the latero-dorsal one on each side. 
Metathorax similar to the mesothorax, so far as the tubercles and spots are 
concerned. The dorsal tubercles, one on each side of the median line, are smaller ; 
