NERINyEA. 71 



" striae " of the type), bending very slightly towards the aperture, sixteen in a 

 whorl at last — stronger and fewer near the apex. Also " with good eyes " 1 the 

 excessively minute spiral strige may be noted near the posterior suture, if not all 

 over. There are no Nerinaean processes, but the characters of the base and aper- 

 ture are not here shown at all. 



Distribution and Relations. — This specimen is at present imique and comes from 

 Shipton-on-Oherwell, and is in the collection of Mr. W. H. Hudleston. It is 

 identified with Piette's figures 17 and 18 only — perhaps his figures 16 and 20 may 

 be different. This species is abundant in the Cornbrash at Le Waast as well as in 

 the underlying beds {fide Rigaux, ' Bas Boulonnais,' p. 3(3). 



family Nerin.eiiu-:. 



First named by Defrance (' Diet. Sci. Nat.'), but first defined by Deshayes (' Coq. 

 Char, des Terrains,' p. 203). According to the definition there given the shells 

 have the aperture subquadrangular and canaliculated, a broad umbilicated columella 

 with strong spiral folds and one or more folds in the interior of the inner lip. 

 According to this the interior folds and the umbilicated columella would be alike 

 essential to the name, but we, nevertheless, call those with solid columellas Nerinxa, 

 while those without the folds are distinguished as Aptyxiella. In this case there 

 are also other reasons for separation. 



Genus NERINiEA, Defrance. 



The records of Nerinsea in the Cornbrash are 



*N. cingenda (28, 43). *.Y. granulata (5, 6, 15, 28, 34, 43, 50). 



*N. fasciata (50). *N. goodhalli (29). 



With regard to N. cingenda, which is an Inferior Oolite species characteristic of 

 the Dogger of Yorkshire, it is once recorded by Wright (and after him by 

 Etheridge) from an examination of Leckenby's collection. But the only Nerinsea 

 in that collection is the one now called N. fasciata (q. v.). 



The specimen in the Leckenby collection bearing the name N. fasciata has not 

 exactly been recorded, since Hudleston (loc. cit.) only mentions the name to reject 

 it. He figures it, however, as "Nerinsea sp." and states that "the matrix is a 

 little peculiar, but on the whole resembles thai of the Scarborough Cornbrash 

 more than any other." This resemblance, I think, is misleading. 



3 They were not, in fact, noticed till Piette's description had been read. 



