P. G. Sanford—Analysis of Fullers Earth. 455 
nomenclature of the group. In recording the occurrence of the 
genus in the English Jurassic, it must therefore suffice to remark 
that the British Museum possesses characteristic remains of a 
species as large as T. Heckeli, Thioll.,! from the Kimmeridge Clay of 
Dorsetshire (B.M. Nos. P. 922, P. 3686, P. 6031); while a nearly 
complete example of a much smaller species has been obtained from 
the Portland Stone of the Isle of Portland (B.M. No. P. 5538). 
8. Browneichthys ornatus, gen. et sp. nov. 
In the series of vertebrate fossils from the Lower Lias of 
Barrow-on-Soar, recently obtained for the Leicester Museum by 
Mr. Montagu Browne, F.Z.S., is an interesting small fish, apparently 
of a new generic type, which the present writer has been favoured 
with the privilege of examining. The specimen is only about 
0:06 in length, displaying portions of the head and trunk; but, 
notwithstanding its imperfections, it seems worthy of brief notice as 
being so different from anything hitherto known. The fish must 
have been originally elongated in form; and the hinder portion of 
the head, preserved as far forwards as the front margin of the orbit, 
suggests the attenuation of the snout. The space occupied by the 
notochord is vacant, indicating its persistence, but the neural and 
heemal arches are well ossified superficially, and there is no evidence 
of elongated, well-developed ribs. The bones of the head are 
invested with ganoine, and ornamented with large tuberculations ; 
and at least the front portion of the trunk is covered with thin, 
deeply-overlapping scales, oval or round in shape, with prominent 
concentric lines of growth, and externally ornamented with large 
ganoine tubercles. Three or four relatively large, narrow, pointed 
ridge-scales, above and below, also indicate a partial or continuous 
armature of the dorsal and ventral margins. Of the dentition and 
the fins, nothing can be ascertained from the fossil now described ; 
and although a series of eight slender bones shortly behind the 
occiput may possibly be the interspinous bones of a dorsal fin, it 
will be well to await the discovery of other specimens before 
attempting their interpretation. 
So far as can be determined, the new Barrow fossil thus most 
nearly approaches the early Mesozoic Ganoids, Belonorhynchus and 
Saurichthys. From these, however, and from other types with a 
persistent notochord, it is generically distinguished by the squama- 
tion; and employing the discoverer’s name, the new form may 
be termed Browneichthys. The type-species may be known as J. 
ornatus. 
IV.—An Awnatysts oF THe Futuers Harta or NutFieLp. 
By P. Greraup Sanrorp, F.I.C., F.C.S., 
Royal School of Mines, London. 
URING June last I visited the Fullers Earth Pits at Nutfield, 
near Redhill, Surrey, with the London Geological Field Class, 
when Professor Seeley suggested to me that I should make an 
1 VY. Thiolliére, ‘‘ Poiss, Foss. Bugey,”’ pt. i. (1854), p. 27, pl. x. fig. 1. 
