REPORT ON THE FORAMINIFERA. 
685 
little or no umbilical depression, and with an angular, somewhat limbate or bordered 
periphery. The segmentation of the superior side is not apparent, otherwise the specimen 
is very similar to that portrayed in PL CIV. fig. 18. 
The typical Pulvinulina repanda is a shallow-water Foraminifer, tolerably common 
in almost every part of the world except the Arctic seas, most abundant in tropical 
and subtropical latitudes. Its home extends from the littoral zone down to about 200 
fathoms; but it has been found sparingly at two Stations in the North Atlantic with 
depths of 435 fathoms and 1000 fathoms respectively. 
As a fossil it has been identified in the middle and later Tertiary formations of Italy 
(Parker and Jones, Seguenza). 
Pulvinulina repanda, var. concamerata, Montagu, var. (PL CIV. fig. 19, a.b.c.). 
Serpnla concamerata, Montagu, 1808, Test. Brit., Suppl., p. 160 ( fide Williamson). 
Rotatina concamerata (“mature”), Williamson, 1858, Rec. For. Gt. Br., p. 52, pi. iv. 
figs. 102, 103. 
Pulvinulina repanda, Parker and Jones, 1862, Introd. Foram., Appendix, p. 311. 
The specimens figured by Williamson under the name Rotalina concamerata, are 
referrible to two distinct species of Foraminifera. One of them, supposed to be the 
“ young ” condition, is the common Discorbina globularis ; the other, the “ mature ” shell, 
is a variety of Pulvinidina repanda, distinguished from the type by the comparatively 
slight convexity of the inferior side, and the more conspicuous limbation of the sutures 
on the superior face. 
Pulvinulina repanda ^ var. concamerata is not uncommon at depths of 20 to 150 
fathoms, on the shores of Great Britain, Belgium, and France, and is found as far 
north as the Faroe Channel. 
Pulvinulina punctulata, d’Orbigny, sp. (Pl. CIV. fig. 17, a.b.c.). 
Rotalia pundulata, d’Orbigny, 1826, Ann. Soi. Natl, vol. vii. p. 273, No. 25; — Module, 
No. 12. 
Rosalina vesicularis (pars), Parker and Jones, 1857, Ann. and Mag. Nat. Hist., ser. 2, vol. xix. 
p. 292, pl. x. figs. 22-24. 
Pulvinidina repanda, var. punctulata, Parker and Jones, 1865, Phil. Trans., vol. civ. p. 394, 
pl. xiv. figs. 12, 13. 
„ punchdata, Parker, Jones, and Brady, 1865, Ann. and Mag. Nat. Hist., ser. 3, 
vol. xvi. p. 20, pl. iii. fig. 82. 
,, repanda, Jones, Parker, and Brady, 1866, Monogr. Foram. Crag, pl. ii. figs. 22—24. 
A depressed modification of Pidvimdina repanda, with more or less inflated 
segments and excavated non-limbate sutures ; the inferior umbilical region somewhat 
(ZOOL. CHALL. EXP. — PART XXII. — 1884.) 5- S7 
