Vol. I, No. 3.] The genus Apus in Baluchistan. 33 
ENS] 
3. Occurrence of the genus Apus in Baliichistan.—By KE. VREvDEN- 
BURG, (Greological Survey of India. 
The following I was not 
is an extract from aware, till a few 
my diary: ‘“ Ko- days ago, that 
hian, 18th Febru- the matter was 
aay LOO. At of any interest 
Thalonk there whatever, and 
are some strange only drew _ the 
phyllopods.” The sketch in order 
above extract to- to be able to 
gether with a identify what ap- 
rough sketch of peared to me ‘a 
the animal, is all Wey 3s CmaOns 
that I have crustacean, not 
written in my thinking that I 
diary regarding could, thereby, 
these creatures, add any informa- 
but I am able to tion regarding’ 
supplement this its distribution. 
short notice from The circumstance 
memory, did not recur to 
my mind until a few days ago, when, on showing my sketch to 
Major Alcock and to Mr. Annandale at the Indian Museum, they 
recognised it as representing the fresh-water phyllopod crustacean 
Apus, and informed me that the genus has never yet been found 
within the limits of the Indian Empire. Although, in the absence 
of an actual specimen, it is not possible to determine the exact 
species, yet the occurrence of the genus within a region where it 
had not yet been known to exist appears sufficiently interesting 
to be worth bringing to the notice of the Society. 
Thalonk is situated in Latitude 28° 24’ N. and Longitude 64° 
43’ at the foot of an abrupt limestone range forming the northern 
border of the Kharan desert which constitutes a portion of the 
semi-independent State of Kharan in Western Baltchistan. I 
passed this locality while marching to Kohian, a camping place 
situated about three miles further east, and did not have any 
opportunity of again visiting it. Except for a few wells and 
springs this region is almost waterless. On the occasion of my 
visit in the winter of 1900-1901, there had been, however, quite 
an unusual amount of rainfall, Heavy showers fell on all the 
hill-ranges at the end of December and beginning of January. 
Considerable tracts in the desert were flooded, and pools of water 
rermained in many places for weeks and perhaps months. At 
Thalonk I came across what appeared to me a pool of this kind, 
occupying a shallow depression in the desert plain. It had 
dwindled to scarcely more than a yard in diameter, and, to me 1t 
seemed to be of a transitory nature. Perennial pools, fed by un- 
derground springs, do occur in certain parts of the desert, and I 
