CRUSTACEA. 
PART V.-OSTRACODA. 
BY R. W. BARNEY, B.A. 
(Lecturer in Biology, University of Hong Kong). 
WITH SIX FIGURES IN THE TEXT. 
I.—Introduction 175 
II.—Methods . . • • • • 175 
III. —List of Species ......... 176 
IV. —List of Stations at which Ostracoda were obtained . . . 176 
V. —Systematic Account . • • • • • • 178 
VI.—Distribution .......... 186 
VII.—List of References • . • • • • • 188 
Index.189 
I—INTRODUCTION. 
The material collected by the “ Terra Nova ” Expedition was received in fifty-one tubes 
of various sizes, some containing only one or two, others many hundreds of specimens. 
It was entirely preserved in formalin. Many of the plankton jars were also examined, 
and yielded ten additional species. Altogether twenty-two species, representing six 
genera, have been identified. 
The examination of the collection was carried out in the laboratory of Prof. 
E. W. Mac-Bride, F.R.S., in the Imperial College of Science and Technology. South 
Kensington. 
II.—METHODS. 
The specimen was placed in four per cent, formalin in a watch glass, and the entire 
animal removed from its shell by means of fine needles. To accomplish this, the 
occlusor muscle was cut through on one side, and the valve thus freed was turned back. 
Next the muscles attached along the hinge-line were cut, and lastly the occlusor muscle 
on the other side. The shell was usually none the worse for this operation, and 
frequently the shape of the rostral tooth and notch and occasionally the sculpture could 
