REPORT ON THE FORAMINIFERA. 
729 
species is primarily characterised by the stellate sutural limbation, consisting of long, 
curved, or sometimes abruptly bent, raised lines of shell-substance, radiating from the 
umbilici — the rays broadest and most turgid near the centre, and tapering towards their 
peripheral ends. 
Well-marked specimens of Nonionina stelligera are not very abundant. They have 
been found in the Arctic Seas, — in Smith Sound, as far north as lat. 82° 33' N., and on 
the shores of Spitzbergen, Franz-Joseph Land, and Novaya Zemlya ; at three 
“Porcupine” Stations in the North Atlantic, depth 64 fathoms to 155 fathoms; and 
sparingly on the British and French coasts ; in shore-sand from the Canaries ; off 
Ascension Island, 420 fathoms ; in the Mediterranean ; and at three points on the west 
coast of Patagonia, at depths of 125 to 245 fathoms. 
The species has been observed amongst the fossil microzoa of the Eocene of Paris 
(Terquem) ; the later Italian Tertiaries (Parker and Jones) ; and the Post-tertiaries of 
the west of Scotland (Robertson). 
Nonionina boueana, d’Orbigny (PI. CIX. figs. 12 , 13). 
Nonionina boueana , d’Orbigny, 1864, For. Foss. Vien., p. 108, pi. v. figs. 11, 12. 
D’Orbigny’ s figure of Nonionina boueana represents a compressed shell, with broad oval 
outline and sharp peripheral edge, the segments being numerous, long, narrow, and con- 
siderably curved. The specific term is one very generally employed by Continental Rhizo- 
podists, and may be accepted as a name of convenience for a group of forms allied to 
Nonionina scapha, but differing from that species in their relatively compressed contour 
and larger number of chambers. 
Reuss treats the Nonionina communis of d’Orbigny (For. Foss. Vien., p. 108, pi. v. 
figs. 7, 8) as synonymous with Nonionina boueana (Sitzungsb. d. k. Ak. Wiss. Wien, 
1864, vol. 1. p. 479, No. 5); Parker and Jones, on the other hand, assign the former 
to Nonionina scapha, F. and M., sp. (Phil. Trans., vol. civ. p. 404). In point of 
fact, Nonionina communis forms an intermediate link almost equally related to both 
varieties. 
Notes have been kept of the occurrence of Nonionina boueana at the following points: — 
Vigo Bay, 11 fathoms; off Cezimbra, 50 fathoms; Bay of Biscay, 180 to 200 fathoms; 
Red Sea, 10 to 15 fathoms; off Amboyna, 15 to 20 fathoms; Hong Kong Harbour, 7 
fathoms; and west coast of Patagonia 125 fathoms. 
Fossil specimens are recorded from the Septaria-clay and Upper Oligocene formations 
of Germany (Reuss) ; and the Miocene of the Vienna Basin, and of Southern Italy 
(d’Orbigny, Seguenza). 
