* OSTRACODA. 
3 
‘Discovery’ nettings, but in one of these it was plentiful—lat. 56° 54' S., long. 
170° 28' E. The other stations in which it occurred less abundantly are lat. 49° 40' S. 
long. 172° 18' 30" E. (surface); lat. 59° 19'S., long. 120° 24' 30" E. (five fathoms); 
lat. 58° 49' 45" S., long. 154° 48' W. (five fathoms); and in Winter Quarters, No. 8 
hole (ten fathoms). 
The ‘ Discovery ’ specimens differed in all cases from the type in being almost 
destitute of colour and striation of the shell, and in the absence of marginal 
serrulations, which are usually very distinct. But, apart from these peculiarities, I 
cannot find any characters to distinguish them from the type. I propose to give them 
the varietal name Isevis. 
i<foy.y 
-2V3 
Cypridina glacialis. 
Shell, seen laterally, ovate, greatest height situated in the middle and equal to 
about two-thirds of the length ; anterior extremity rounded off, beak short and acutely 
Cypridina Glacialis. 
pointed, not at all prominent, subjacent sinus small and shallow, posterior extremity 
slightly produced below the middle ; dorsal margin boldly and evenly arcuate, ventral 
much flattened; seen from above the outline is elongated, ovate, more than twice as 
long as broad, widest in the middle, tapering gradually toward the anterior extremity, 
which is subacute, posterior extremity produced and mucronate. Substance of the shell 
thin but calcareous, surface smooth, destitute of markings or sculpture, colour yellowish. 
Length, 5 mm. 
One specimen only—a female—was seen in a netting consisting mainly of 
Pliilomedes assimilis. Winter Quarters, 11th Nov., 1902; Hut Point. Its nearest 
allies seem to be Cypridina gracilis, Brady, and, perhaps, C. luteola, Dana, with neither 
of which, however, can it be certainly identified. 
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