324 Records of the Indian Museum. [Mor Vit 
ever, only been able to obtain three definite growth stages in 
either sex and although these follow ‘‘ Brooks’ Law ” closely yet, 
as regards the female stages, this species differs in one respect 
from those of the other species measured. 
The actual measurements are plotted out in text-figure IV, 
but owing to insufficient numbers the last stage of the female and 
the first of the male do not form very distinct groups. 
The average sizes of each group, as found from the actual 
measurements and those calculated from the smallest stage ob- 
tained, are given below :— 
Q 
Observed size. anaes Growth-factor. 
min. | mm. 
Stage 4 I‘QgQI 1°99 | 1°29 
ee 2°575 257 | 1-29 
ees e % 3°34 | S31 1'29 
ag Rael ae S6 Unknown | 4°27 
As in the case of the other species only specimens from stage 2 
were sexually mature. A peculiarity of the growth of this species 
is that there is no diminution of the growth-factor for the last 
two moults. 
In the case of all the other species that I have examined the 
growth-factor drops when stage 3 has been reached, and the last 
two sexual moults are characterized by a smaller increase in size, 
but here there is no indication of such a change. 
In the case of the male also only the penultimate form was 
obtained. The table below shows the actual and calculated sizes 
of the various moult-stages. 
+ 
| Observed size. | Calculated size. Growth-factor. 
| | 
| mi. mm. 
Stage 4 ate 36 : 1°825 | 1°825 129 OL IeG7 
eS 2°343 | 2°354 1°57 
see 52 ae 2°859 | 2°865 
Av ae : Unknown 
