Mr. H. B. Brady on some Arctic Horaminifera. 415 
69. Nonionina orbicularis, sp. nov. (Pl. XXI. fig. 5 a, 6.) 
Test symmetrical, nautiloid, subglobular, somewhat com- 
pressed, convex or slightly umbonate at the umbilici; peri- 
pheral margin more or less lobulate. Segments numerous, 
about ten in the final convolution; sutural lines somewhat 
excavated, especially near the umbilici. Aperture arcuate, 
either simple or divided by projections from the upper margin. 
Diameter 0°5 millim. 
This species resembles N. pompitliotdes in its subspherical 
contour, but may be distinguished by its larger number of seg- 
ments and their less regular disposition, as well as by the 
thickened umbilici. The aperture is frequently subdivided 
by cross bars of shell, suggesting its affinity with the weaker 
forms of Polystomella. 
Nonionina orbicularis only occurs in one of the soundings, 
No. 502 (C); but a number of specimens, of somewhat larger 
size than those now described (0°75 millim.), have been ob- 
tained from the ‘ Porcupine’ dredgings in the North Atlantic. 
POLYSTOMELLA, Lamarck. 
70. Polystomella arctica, Parker & Jones. 
Polystomella crispa, var. arctica, Parker & Jones, 1865, Phil. Trans. 
vol. cly. p. 401, pl. xiv. figs. 25-30. 
Widely distributed ; the specimens large and abundant in 
many of the soundings. 
71. Polystomella striatopunctata, Fichtel & Moll, sp. 
Nautilus striatopunctatus, Fichtel & Moll, 1803, Testac. Micr. p. 61, 
pl. ix. figs. a—e. 
Abundant over the whole area. 
In addition to the species which have been enumerated, 
there are a few specimens concerning which it is impossible 
to speak with certainty. One of these is a minute or young 
Cristellaria ; anotherns probably a worn example of Lagena 
hispida. But in the absence of well-defined examples these 
and other doubtful forms have been excluded from the list. 
Supplementary Note on some Foraminifera from Soundings 
obtained by Capt. A. H. Markham, R.N., on the Shores 
of Novaya Zemlya in 1879. 
From a region so difficult of access, and on a subject con- 
cerning which so little has hitherto been known, every addi- 
