154 Memoirs of the Indian Museum. [VOTE 
Head flat, black, except the hinder edge touching the prothorax ; three pairs of 
clear glands are situated above; the first almost on the front, and the third at the 
level of the eyes. The latter is the largest and lies on the line terminating the black 
portion of the head. 
The glands have a chitinous ring surrounding them. 
Antennae resting directly on the head, black, sparingly hairy ; the spur is thick 
and large, about half the base of VI; first joint longer than second. 
Length proportions :— 
III. IV. VE Wale 
12 6 10 II+5 (16) 
Wengsths) 4.) 0120 0'IO . 0'I6 0'I9g+0'08 mm. 
There is one sensorium at the extremity of V. On article VI there is another 
associated with a group of smaller ones. Both-sensoria are strongly ciliated. 
Prothorax of the body colour; lateral sides dusky, the duskiness invading the 
dorsal parts as well. There are two glands about the middle and two depressions a 
little on their outside. | 
Meso- and metathorax similar to the abdominal segments, only their lateral 
glands are larger and they themselves are narrower. 
‘The abdominal pattern consists of six longitudinal rows of greenish to darkish 
glands; two are median, two latero-dorsal and two lateral. These dot-like glands are 
largest on the sides. On the ultimate segments there are only four; a pair on either 
side becomes confluent. A little below the carinae is a prominent row of black 
lateral tubercles, a pair for each segment.’ 
Anus semicircular and raised to the dorsal surface. 
The cauda is only a dark line, otherwise obsolete. 
Anal plate very conspicuous, rectangular, standing vertical; spiny along the mar- 
gins which are black. The central part, directed backwards, is occupied by a large 
gland which secrets the threads of flocculence, running into a tail. 
Genital plate thick, crescentic, black. 
The rudimentary gonapophyses are small and two in number. 
The cornicles are entirely wanting. 
Legs stout, black, including coxae; tibiae only about a quarter as long as femora ; 
tarsi only slightly smaller than third antennal joint. 
Rostrum short and stout, hardly reaches a little beyond the first coxae; all the 
three joints are subequal and black. 
Measurements :— 
Length ve se .. 175—2'00 mm. 
Breadth + 2% ... 0'95—I'I5 ,, 
Antennae 12 és .. O‘80—0'95 ,, 
Alate viviparous female.—Winged insects are very rare; during two years that 
they were kept under observation it was possible only to secure a few in the last week 
! [Very likely the presence of lateral tubercles, as stated by Mr. Das, is only an error. P. v. d. G.]. 
