220 Mr. G.S. Brady on Marine Ostracoda from Tenedos. 
XXIV.— Contributions to the Study of the Entomostraca. 
By GEORGE STEWARDSON Brapy, C.M.Z.S. Ke. 
No. III. Marine Ostracoda from Tenedos. 
[Plates XIV. & XV.] 
In this gathering, for which I am indebted to my friend Mr. 
Thomas Blain, of Sunderland, the chief point of interest is the 
occurrence of two British species, Cythere antiquata (Baird), 
and Pontocypris(?) angusta, Brady. The shells of the second 
are empty, and I am not yet able to state with certainty whe- 
ther the generic position assigned to it is correct. The first- 
named occurs abundantly, and is very finely developed; I 
have noticed it also in other collections from the shores of the 
Levant and Grecian Archipelago. The prevailing species in 
the gathering are Cythere tarentina, Baird, C. Speyer7, Brady, 
C. favoides, Brady, and Loxoconcha affinis, Brady. 
List of Species. 
Cyprip™. Cythere prava (Baird). 
fistulosa (Baird) 
(?=runcinata, Baird). 
senticosa, Baird 
(= hystrix, Reuss). 
antiquata (Baird). 
Loxoconcha affinis, Brady *. 
PAglaia pulchella, Brady. 
Pontocypris (?) angusta, Brady. 
intermedia, nov. sp. 
Bairdia formosa, nov. sp. 
CYTHERID2. 
alata, nov. sp. 
Cythere favoides, nov. sp. Xestoleberis margaritea, Bradyt. 
—— Speyeri, nov. sp. Cytherura acris, nov. sp. 
tarentina, Baird. Sclerochilus (?) segzeus, nov. sp. 
—— crispata, nov. sp. Paradoxostoma(?) reniforme, nov. 
dissimilis, nov. sp. | Sp. 
Pontocypris intermedia, nov. sp. (Plate XIV. figs. 1, 2.) 
Shell, viewed from the side, subtriangular; greatest height a 
little in front of the middle, and equal to half the length: 
anterior extremity broad and well rounded, posterior nar- 
rowed, almost angulated: superior margin forming an ob- 
tuse angle a little in front of the middle, thence sloping 
with a gentle curve to the front, but much more steeply 
backward ; inferior margin scarcely sinuated. Outline, seen 
from above, ovate, with pointed extremities; greatest width 
situated in front of the middle, much less than the height. 
Colour white ; surface smooth, granular. Length #, inch. 
This presents characters intermediate between those of the 
* Normanna affinis, Brady, Trans. Zool. Soe. vol. vy. p. 382. 
+ Cytheridea margaritea, Brady, ibid. p. 370. 
