REPORT ON THE FORAMINIFERA. 
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In the fossil state it occurs in the Septaria-clays of North Germany (Reuss), in the 
Schlier of Lower Austria (Karrer), in the Subapennine Tertiaries of Italy, and in clays 
of similar age near Malaga (Soldani, Parker and Jones, &c.). 
Cristellciria orbicularis, d’Orbigny, sp. (PL LXIX. fig. 17). 
‘Nuclei conico rotunclciti ,” Soldani, 1798, Testaceograpliia, vol. ii. App. p. 138, pi. i. fig. 1 2, p. P. 
Robulina orbicularis, d’Orbigny, 1826, Ann. Sci. Nat., voL vii. p. 288, pi. xv. figs. 8, 9. 
,, imperatoria, Id. 1846, Eor. Eoss. Vien., p. 104, pi. v. figs. 5, 6. 
The chambers of Cristellaria orbicularis present the same general form and disposition 
as those of Cristellaria vortex, but the periphery of the test is extended so as to form a 
well-defined wing or keel. The two species in fact bear just the same relation to each 
other as Cristellaria rotulata and Cristellaria cultrata. 
The carinate form has been found at one Station in the North Atlantic, off Sombrero 
Island, West Indies, 450 fathoms ; and at five in the South Pacific, namely — off 
Kandavu, 210 fathoms ; off Tahiti, 420 fathoms ; off the west coast of New Zealand, 150 
fathoms ; off Sydney, New South Wales, 410 fathoms ; and oft’ East Moncceur Island, 
Bass Strait, 38 fathoms. 
As a fossil it occurs in the Subapennine formations of Central Italy, and in the 
Miocene of the Vienna Basin. 
Cristellaria crassa, d’Orbigny (PI. LXX. fig. 1 , a.b ). 
Cristellaria crassa, d’Orbigny, 1846, For. Foss. Vien., p. 90, pi. iv. figs. 1-3. 
Robulina deformis, Reuss, 1851, Zeitschr. d. deutsch. geol. Gesell., vol. iii. p. 70, pi. iv. fig. 30. 
This is a biconvex variety, very thick in proportion to its diameter, having only about 
three chambers visible externally, and furnished with a narrow marginal keel. 
Cristellaria crassa has been found living amongst allied forms, off Kandavu, 210 
fathoms, but not elsewhere. 
The locality given by d’Orbigny for his fossil specimens is the Miocene of Baden near 
Vienna ; that given by Reuss, the Septaria-clay of Hermsdorf near Berlin. 
Cristellaria nitida, d’Orbigny (PI. LXX. fig. 2, a.b). 
“Nautili Lituitati Soldani, 1789, Testaceograpliia, vol. i. pt. 1, p. 64, pi. lvi. figs. O. P. 
Cristellaria nitida, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 291, No. 5. 
Cristellaria cassis (pars), Parker, Jones, and Brady, 1871, Ann. and Mag. Nat. Hist., ser. 4, 
vol. viii. p. 244, pi. x. fig. 88. 
A feeble modification belonging to the “ cassis ” and “ mamilligera ” group. The 
shell is compressed and carinate and the earlier sutures Mhabate. It is a doubtful and 
unsatisfactory species. 
The recent specimens are from off the Philippines, 95 fathoms. 
(ZOOL. C ET ALL. EXP. — PAKT XXII. 1884.) 
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