PURPURINA. 85 
Yorkshire. Some of our Inferior Oolite species have very close representatives in 
the Callovian of Montreuil-Bellay in France. 
Since the diagnosis of the genus given above will scarcely cover some of the 
extreme forms about to be included it will be necessary to constitute two sections, 
of which the first may be regarded as the normal or typical Purpurina, to which 
the above diagnosis may be fairly applied. 
Section I.—Purevrina, sensu stricto. 
Bellona Group. 
1. Purpurina ELaBoRaTA, Lycett, 1850. Plate I, figs. la, 6b; le,d,e; 1f; 1g. 
1850. TurzBo eraporarus, Lycett. Ann. Nat. Hist., vol. vi, p. 416, pl. ii, fig. 1. 
1851-4. — — Bean. Morris, and Lycett, Gt. Ool. Moll., part 1, 
p- 64, pl. ix, fig. 27, and 
p. 116, pl. xv, fig. 2. 
1854. _ — — Morris, Catalogue, p. 282. 
1869. Purpurtya ELABORATA, Bean. Brauns, Mitl. Jura, p. 168. 
1882. — -- — var. Basocrensis, Hudleston. Geol. Mag., 
1882, p. 195, pl. v, fig. 2. 
Compare also Purpurina bellona of many Continental authors. 
> 
Bibliography, §c.—In addition to the above, “ Turbo elaboratus”’ was described 
as a new species by Lycett, in a paper entitled “‘ Tabular View of Fossil Shells 
from the Middle Division of the Inferior Oolite in Gloucestershire,” published, 
1853, in the ‘ Proceedings of the Cotteswold Naturalists’ Field Club,’ vol. i, 
p- 77.! There is certainly some difficulty in determining whether this species 
should be assigned to Lycett or to Bean, though it really makes very little differ- 
ence. Morris and Lycett provide us with two types. Oneis from the Great Oolite 
of Minchinhampton or Bussage. This isin a good state of preservation, and may be 
seen at the Jermyn-Street Museum. The Yorkshire specimen (Pl. XV, fig. 2) is 
from the Scarborough Limestone (Humphriesianus-zone), and is in the Bean 
1 N.B.—No notice is taken of this paper by Morris in his ‘Catalogue.’ About 106 species of 
Gasteropods are tabulated, including some 56 new species, which are noted or briefly described. Two 
figures of Inferior-Oolite Gasteropoda are given. Several of the Inferior-Oolite species therein 
named and partially described by Lycett are preserved in the Jermyn Street Museum ; some also have 
been described and figured in the “ Great Oolite Mollusca.” In those cases where the identification 
is certain, it will be convenient to adopt Lycett’s name. 
