FROM THE DEEP BORING AT RICHMOND. Pia 
13. Punvinvtiva ELEGANS, D’Orb., var. TENELLA, nov. (PI. 
XXXIV. figs. 17 a, 176.) 
Only one specimen; small, depressed; deeply excavated on the 
upper face with the sunken tops of ten chambers; or, in other 
words, bearing their raised limbate coil and septa, which are not so 
symmetrical as in other varieties. ‘The opposite face is subconical 
and smooth. This kind of Pulvinulina is abundant in the blue 
clay obtained at second-hand from the gypsum-pits at Chellaston, 
near Derby, and described in the Quart. Journ. Geol. Soc. vol. xvi. 
p- 452. Prof. Reuss long ago pointed out that these Chellaston 
Foraminifera had a Liassic aspect ; and they were specially collated 
by Jones and Parker with those of the Lias and Oolites, at p. 456. 
As doubts were expressed about the geological stage whence the 
clay was derived, a search for the clay in place was made some 
time after, but without any good result, and the evidence is still 
what was stated at p. 452. /P. elegans is described and figured, 
op. cit. 1860, p. 455, pl. 20. fig. 46, as Rotalia elegans; but its 
true relationships were pointed out in the Phil. Trans. 1865, pp. 393, 
396, &c. Pulvinuline belonging to this type occur in the Trias 
(St.-Cassian beds), Lower Oolites, &c., and abound in the Gault. 
P. caracolla (Romer *) and P. reticulata (Reuss 7), from the Hils 
Clay, are the nearest to our specimen, but they are too thick and 
symmetrical. 
14, Asmall Mchola?, obscure ; and a small, white, sandy (?), convex 
disk— Webbina ? 
2. Enromostraca at 1205 feet. 
1-4. Barepim. (Pl. XXXIV. figs. 20, 21, 22.) 
Several specimens occured here, and of various outlines and shape. 
Bairdia Hilda, sp. nov. (fig. 20), is longer than either fig. 18 or 
fig. 19 (see p. 767) in proportion, and more oblong in shape, but 
rounded anteriorly and acute behind (downwards in the figure). 
Bairdia jurassica, sp. nov. (fig. 21), is a carapace with narrow 
valves, relatively long, and with outdrawn, but rather blunt, pos- 
terior angle. 
B. jurassica, var. tenuis, nov. (fig. 22), shows the left valve 
(largest) of a very narrow thin Bair dia; but perhaps it need not 
be separated from fig. 21, except as a variety. 
It is difficult to correlate these Bair die with known species. 
The differences in outline are often of trifling amount, but yet pos- 
sibly essential, as may be seen also with the Carboniferous Bairdie, 
in the Q. J. G.S. vol. xxxv. p. 565 &c., pls. 28 to 32; and in G. S. 
Brady’s ‘ Report on the Ostracoda collected in the “ Challenger ” 
Expedition,’ pls. 7 to 11; without referring to the many other 
published figures of Bairdie from all formations, even from the 
Silurian upwards. 
* Verst. Norddeutsch. Kreideb. 1841, pl. 15. fig. 22. 
+ Sitzungsb. k. Akad. Wiss. Wien, All xlvi. 1863, pi. 10. f. 4. 
