246 Journal of the Asiatic Society of Bengal. [June, 1913. 
is shown below, moves about freely in an open but well-like 
pool fed by a subterranean spring and not in direct communi- 
cation with any large mass of water above ground. It is prob- 
able therefore that Huryrhynchus resembles it in bionomics. 
Dr. Calman’s excellent account of the species leaves little to 
be said as regards its external characters, while Mr. Ekendra- 
nath Ghosh has, in the preceding paper of this series, described 
its internal anatomy in detail. 
e specimens before us indicate that the second peraeo- 
pod of the male mentioned by Calman, in which tbe immovable 
tinger is shorter than the dactylus, is, as he suggests, abnormal; 
but our specimens also show that there is normally a very 
ae ay dissimilarity between the two large chelae of the male 
g. A). 
In the female the two are similar in form, though not 
always equal (fig. B) and agree with Calman’s fig. 11, except that 
they are a little more slender and longer. In the leg of this 
though 
strikingl 
and not much more than half as long as the palm. The 
palm is distinctly flattened and its breadth is to its thickness 
as 10} to 7. The 
a th. The immobile finger is a little shorter than the dac- 
tylus and it i 
is obsolete. 
Dr, Ca. 
male specimen recently seen by him in which the same 
