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THE VOYAGE OF H.M.S. CHALLENGER. 
Nonionina orbicularis has been dredged on the west coast of Novaya Zemlya, 55 
fathoms ; on the shores of Spitzbergen, 7 fathoms ; in the Faroe Channel, 632 fathoms ; 
on the west of Scotland, 25 fathoms ; and off Yalentia, 112 fathoms. 
Fossil specimens have been identified amongst the microzoa from a Post-tertiary clay 
occurring on the coast of Fifeshire. 
Nonionina asterizans, Fichtel and Moll, sp. (PI. CIX. figs. 1, 2). 
Nautilus asterizans , Fichtel and Moll, 1803, Test. Micr., p. 37, pL iii. figs. e-h. 
Florilus stellatus, Mont fort, 1808, ConcbyL Syst4m., vol. i. p. 135, xxxiv e genre. 
Pulvinulus asterizans, Lamarck, 1816, Tab. Encycl. et Method., pt. xxiii. pi. 466, fig. 10, a-d. 
Placentula asterizans , Id. 1822, Anim. s. Vert., p. 621, No. 2. 
Nonionina asterizans , Parker and Jones, 1860, Ann. and Mag. Nat. Hist., ser. 3, vol. v. p. 101, 
No. 1. 
Polystomella crispa , var. ( Nonionina ) asterizans, Id., 1865, PhiL Trans., voL civ. p. 403, pi. xiv. 
fig. 35, pi. xvii. fig. 54. 
The Nautilus asterizans of Fichtel and Moll has been selected by Parker and Jones 
as the type of the Nonionine section of the Polystomellince. The original figure is that 
of a regularly nautiloid shell, the sutural limbation of which is well marked but confined 
to a small area immediately encircling the umbilicus, the umbilicus itself being slightly 
excavated. 
Characteristic specimens of this sort have been obtained from sands dredged off 
Kanclavu, Fiji Islands, at depths of 210 fathoms and 255 fathoms, and off Raine Island, 
155 fathoms. The species is recorded by Parker and Jones from the Red Sea, the Indian 
Ocean, the coast of Australia and elsewhere. 
The same authors report its occurrence in the later Tertiaries of Italy, and in the 
Fen-clays of Lincolnshire and Cambridgeshire. It has also been found by Crosskey and 
Robertson in the Post-tertiaries of Norway and the west of Scotland, and by Shone in 
the Glacial-clays of Cheshire. 
Nonionina stelligera, d’Orbigny (PI. CIX. figs. 3-5). 
Nonionina stelligera, d’Orbigny, 1839, Foram. Canaries, p. 128, pi. iii. figs. 1, 2 (“ stellifera ” 
on plate). 
„ „ Brady, 1864, Trans. Linn. Soc. Lond., vol. xxiv. p. 471, pi. xlviii. fig. 19. 
Polystomella crispa, var. ( Nonionina ) stelligera, Parker and Jones, 1865, Pbil. Trans., vol. civ. 
p. 404, pi. xiv. figs. 40, 41. 
Nonionina stellifera, Fiscber, 1870, Actes Soc. Linn. Bordeaux, vol. xxvii. p. 397, No. 46. 
„ stellata, Terquem, 1882, Mem. Soc. gbol. France, ser. 3, vol. ii. Mem. IH. p. 43, pi. i. 
fig. 11, a.b. 
The general form of the test of Nonionina stelligera is similar to that of Nonionina 
depressula, with which it also agrees as to the shape and disposition of the segments. The 
