Mr. H. B. Brady on some Arctic Foraminifera. 411 
51. Nedosaria (Dentalina) mucronata, Neugeboren. 
Dentulina mucronata, Neugeboren, 1856, Denkschr. k. Akad. Wiss. 
Wien, vol. xii. p. 83, pl. iii. figs. 8-11. 
A single broken specimen of this species was found in the 
sounding No. 514 a, off Franz-Josef Land. 
PoLymorPHINA, D’Orbigny. 
52. Polymorphina lactea, Walker & Jacob, sp. 
Serpula lactea, Walker & Jacob, 1798, Adams’s Essays, 2nd ed. 
p- 634, pl. xxiv. fig, 4. 
Novaya-Zemlya Sea; very rare, specimens minute. 
53. Polymorphina oblonga, D’Orbigny. 
Polymorphina oblonga, D’Orbigny, 1846, For. Foss. Vien. p. 232, pl. xii. 
figs. 29-31. 
A single characteristic specimen and one or two fragments 
from the Novaya-Zemlya Sea. 
54. Polymorphina compressa, D’Orbigny. 
Polymorphina compressa, D’Orbigny, 1846, For. Foss. Vien. p. 238, 
pl. xii. figs. 32-34. 
One specimen from the Matyushin Shar. 
ees 
Uvigerina, D’Orbigny. 
55. Uvigerina pygmea, D’Orbigny (var.). 
Uvigerina pyymea, D’Orbigny, 1826, Ann. Sci. Nat. vol. vii. p. 269, 
pl. xii. figs. 8,9; Modeéles, no. 67. 
Sparingly distributed over the whole area; very rare off 
Franz-Josef Land. All the specimens are of the Arctic 
variety (vide Ann. & Mag. Nat. Hist. ser. 5, vol. 1. p. 435, 
pl. xx. fig. 7 a,b), an intermediate form partaking more or 
less of the characters of U. angulosa, Will. ‘They differ from 
the typical U. pygmea in the partial nature of the surface- 
ornamentation, and in their tendency to assume a more 
elongate and subangular shape. These, however, are very 
variable characters, indicating rather the different life-condi- 
tions of a polar climate than any specific distinction ; and as 
we proceed southwards the specimens gradually assume the 
normal form. 
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