F goo-1901.] Prize Collection of Fresh-water Crustacea. 257 
OsTRACODA. 
a. 
29, C. ophthalmica, Jurine. 
St Margaret’s Loch, Aug. 18, 1900. Common. Easily recognised 
by the very compressed reniform valves. An unusually transparent 
; species. Conspicuously punctate. 
Cyclocypris. 
30, C. serena, Koch. 
Lower Elf Loch, Nov. 24, 1900. Very common. Recognised 
hiefly by its small size. 
8 
31, C. fuscata, Jurine. 
Elf Loch, Jan. 26, 1901. Uncommon. Distinguished from C. 
incongruens by the reticulation on the shell, the duller brown colour, 
the absence of the crenate border on the anterior margin of the right 
valve, and by the slenderer caudal rami. 
32, C. incongruens, Ramdohr. 
Pond, House-of-Hill Farm, Aug. 21, 1900. Common. Has no 
reticulation on the shell; is of a bright brown colour ; has crenate 
border on anterior margin of right valve. 
33, C. virens, Jurine. 
Marchfield Pond, July 7, 1900. Very common. Generally of a 
decided green colour. 
34, C. obliqua, Brady. 
Craigleith Quarry, Feb. 2, 1901. Rare. Only one specimen found. 
In general appearance resembles C. fuscata, but the brown colouring is 
in places tinged with green. There is no reticulation, and the caudal 
rami are different. 
— 
peer cane 
_ 365, I. biplicata, Koch. 
Elf Loch, Sept. 15, 1900. Rare. Easily recognised by the general 
shape and the well-marked punctation of the shell. Light brown 
colour. 
Herpetocypris. 
_ 36, H. reptans, Baird. 
, Mar! pit, Davidson’s Mains, June 5, 1900. Very common. 
Cypridopsis, 
37, C. aculeata, Lilljeborg. 
Cramond Island, July 6,1901. As regards frequency, see remark to 
Cyclops zquoreus. One specimen, however, was got from a pond at 
pris. 
38, P. vidua, Miiller. 
Granton Quarry, July 26, 1900. Very common. Easily recognised 
by its inflated ovoid form and by the three black bands on the white 
; shell. 
Candona. 
39, C. candida, Miiller. 
Low pond, Penicuik, Dec. 1, 1900. Very common, but does not 
leave the bottom of the pond. ’ 
% CLADOCERA, 
Diaphanosoma. 
40, D. brachyurum, Liévin. 
Marfield Loch, Sept. 21, 1901. Rare. All the specimens found 
were males. 
