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. — Purpukina, sensu stricto. 



Bellona Group. 



1. Purpurina elaborata, Lycett, 1850. Plate I, figs, la, b ; 1 c, d, e ; If; la. 



1850. Ttjebo elaboeatus, Lycett. Ann. Nat. Hist., vol. vi, p. 4L6, pi. ii, fig. 1. 

 1851-4. — — Bean. Morris, and Lycett, Gt. Ool. Moll., part 1, 



p. 64, pi. ix, fig. 27, and 

 p. 116, pi. xv, fig. 2. 

 1854. — — Morris, Catalogue, p. 282. 



1869. PimpuiirNA elaborata, Bean. Brauns, Mitl. Jura, p. 168. 

 1882. — — — var. Bajocensis, Hudieston. Geol. Mag., 



1882, p. 195, pi. v, fig. 2. 

 Compare also Purpurina bellona of many Continental authors. 



Bibliography, Sfc. — 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. 1 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. One is from the Great Oolite 

 of Minchinhampton or Bussage. This is in a good state of preservation, and may be 

 seen at the Jermyn-Street Museum. The Yorkshire specimen (PI. 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 aud figured in the " Great Oolite Mollusca." In those cases where the identification 

 is certnin, it will be con\enient to adopt Lvcett's name. 



