ON FORAMINIFERA AND OSTRACODA FROM RICHMOND. 765 
49. Nores on the Foraminirera and Osrracopa from the Durzp 
Borine at Ricumonp. By T. Rupert Jonzs, Esq., F.R.S., 
F.G.S8. (Read June 25, 1884.) 
[Puatre XXXTV. | 
§ I. Specimens 1-8 came from 1145’ 9" to 1146’ 6”. 
§ IL. Specimens 11-19 came from 1151’ to 1151' 6". 
§ III. Specimens 21-57 came from 1205’. 
They have all been carefully mounted, and will be deposited in the British 
Museum and elsewhere. The numbers here indicated are the numbers of the 
specimens as mounted and preserved, and have no reference to the order of the 
species as described in this paper. 
§ I. Depth of 1145 feet 9 inches to 1146 feet 6 inches. 
From the bed, 9 inches thick, at the depth above mentioned, there 
were obtained seven specimens of Foraminifera, and several Ento- 
mostracan valves. 
1. FoRAMINIFERA. 
These comprise six specimens of Cristellaria and one Lituola. 
The latter may be regarded as LZ. nautiloidea, var., and is small, 
discoidal, depressed (slightly biconcave), with blunt or rounded edge. 
It belongs to the Haplophragmium division, is much like the recent 
H. emaciatum, H. B. Brady, ‘ Report on the Foraminifera obtained 
during the Voyage of the “ Challenger,”’ p. 305, pl. 33. f. 27, and 
is not far removed from H. nanum, H. B. B., and H. acutidor- 
satum, Hantken; but the last is involute, instead of evolute, in 
its growth. 
The specimen before us may be termed Lituola nautiloidea, Lam., 
var. (Haplophragmium) depressa, nov., or, for convenience, L. de- 
pressad. It looks so smooth and worn that it is possibly a derived 
fossil. Pl. XXXIV. fig. 2. 
Of the Cristellaric, which are all of small size, and some minute, 
there are the following species or varieties :— 
(1) Cristellaria rotulata (Lamarck), thin-edged, with convex um- 
bilicus, and raised septal lines; the chambers are rather small, very 
oblique and subfalcate, about nine in the last whorl (Pl. XXXIV. 
fig. 9). There is also a very small, ill-grown C. rotulata, with the 
posterior angle of some of the chambers projecting from the circular 
edge; not an uncommon condition. 
(2) Cristellaria cultrata (Montfort), with keel, central boss, thick 
and raised septa, and about 7 chambers in the last whorl, Pl. 
XXXIV: fig. 11. 
(3) A less circular (more elliptical) variety of the last-mentioned 
form, with 6 chambers visible, the last of which projects slightly 
forwards, Pl. XXXIV. fig. 10. 
(4) Cristellaria rotulata (Lamarck). A somewhat Marginuline 
