10 
RICHARD HOLLAND. 
(Schwed. Südpolar-Exp. 
Truncatulina refulgens, (Montfort). 
Plate IL Figs, i and 7. 
Cibicides refulgens, Montfort, 1808, Conchjd. Syst., vol. I, p. 122, 3ire genre. 
Truncatulina refulgens, d'Orbigny, 1826. Ann. Sei. Nat., vol VII, p. 279, No. 5, pl. XIII, figs. 8 to li. 
> » Brady. Rep. Chall. 1884. p. 659, pl. XCII, figs. 7 — 9. 
» > Jones, Parker, Brady etc. 1897, Monogr. Forain. Crag, p. 302, pl. V, figs. 31 a and b. 
Test free or adherent, regular, conical or plano-convex. Oral surface conical 
or domeshaped, aboral surface flat or slightly concave; chambers long and some- 
what inflated; foramina not very pronounced. 
This is but a variety of the common Truncatulina lobatiila in which the con- 
vexity of the oral surface is more pronounced and the sutures and peripheral margins 
of the chambers on the aboral surface are more distinctly emphasized. 
Truncatulina refulgens, according to the »Challenger» Report, is confined to 
temperate seas, and occurs at depths of from 45 to 2,400 fathoms. 
Egger in the »Gazelle» Memoir records specimens from off Mauritius and North 
Australia at depths of 74 and 194 fathoms respectively. 
In the fossil condition the »species» is recorded from several Tertiary and Post- 
tertiary deposits. In the Pecten-conglomerate this form is not so numerous as the 
ordinary form T. lobatula. 
Truncatulina lobatula, (Walker). 
Nautilus lobatuhis, Walker, 1784, Test. Min., p. 20, pl. Ill, figs. 71. 
Truncatuluia lobatula, Brady, 1884, Rep. Chall., p. 660, pl. XCII, fig. lo etc. 
Several rather indifferently preserved specimens of this ubiquitous form occur 
in the material from the Pecten-conglomerate . 
T. lobatula is common • in all recent seas and at all depths down to 3,000 
fathoms. Its geological range is also very great. It has been recorded from the 
Carboniferous rocks and in all later deposits. 
Truncatulina ungeriana, (d’Orbigny). 
Plate II. Fig. 10. 
Rotalina ungeriana, d’Orbigny, 1846, For. Foss. Vienne, p. 157, pl. VIII, figs. 16 — 18. 
» » BRADY, 1884, Report. Chall., p. 664, pl. XCIV, fig. 9. 
Test tree, orbicular, depressed; oral side only slightly convex and depressed at 
the centre; aboral side nearly flat; periphery only slightly rounded. Foramina rather 
conspicuous. 
