440 Journal of the Asiatic Society of Bengal. [N.S., XIX, 
remarkably modified. They are longer than in females, the 
third pair reaching beyond the scale by one or two times the 
length of the dactylus. The merus and carpus resemble those 
of females and have the same external spines, but the pro- 
podus is very conspicuously dilated towards its distal end 
and the posterior border is still more thickly set with spinules. 
The propodus is only from 1°8 to 271 times the length of the 
dactylus and is only from 4°6 to 4°7 times as long as its 
greatest breadth. Thespinules of the dactylus vary in number 
from 20 to 29 and are conspicuously recurved near the apex. 
The fifth legs (text-fig. 2/) in both sexes reach a little 
beyond the end of the first antennular segment. The merus 
has one or two spines on its posterior border and one situated 
externally near the distal end; there is one externa! spine at 
the distal end of the carpus and sometimes a smaller spine in 
addition in the anterior part of the posterior border. The 
propodus is from 2°5 to 3-2 times the length of the dactylus 
and tends to be proportionately longest in females. The dac- 
tylus bears a series of 42 to 56 spinules. 
The branchial formula is normal and there are well devel- 
oped epipods at the base of the first four legs. 
The form of the endopod of the first pleopod of the male 
is shown in text-fig. 27. The appendix masculina of the 
second pleopod is very large and nearly as long as the 
endopod which bears it. 
The telson bears from 4 to 9 pairs of dorsal spinules and 
the apex, which is broadly rounded, is furnished with five 
pairs of rather stout setae between the spinules at the postero- 
lateral corners’ The spinules on the outer uropod vary in 
number from 9 to 11. 
Full grown females reach a length of about 30 mm. The 
eggs are very large, from 1:0 to 1:17 mm. in length and from 
0°65 to 0°85 mm.,in breadth. 
The species is described from a large number of specimens 
collected for Dr. J. W. Gregory by Mr. W. N. Ferguson at 
Tali-fu in Yunnan at an altitude of about 7,000 feet. A num- 
ber of the best specimens have been selected as types and are 
registered in the collections of the Zoological Survey of India 
under number C 688/1. 
_ Some years ago Mr. J. Coggin Brown of the Geological 
Survey of India brought back a large number of Caridina 
from Yunnan. He obtained them from a fisherman at Tali-fu 
who was taking them to market in a basket and it is probable 
that they came from Lake Tali. The condition of these speci- 
mens is exceedingly bad, for they were completely dry when 
purchased and appear to have been cooked. So far as can be 
seen they agree closely in general character with C. gregoriana, 
but the upper rostral teeth appear on the whole to be less 
numerous and no males with modified legs can be recognised. 
Se Seen ae 
