136 



REPOET — 1888. 



Pleurotoma (var. Ulideana.) 



„ turricula. 



Tropbon muricatns. 

 ,, clathratus. 

 „ truncatus. 

 ,, craticulatus. 

 Turritella incrassata. 



„ terebra 



Astarte borealis. 

 „ compressa. 

 „ elliptica. 

 ,, (var. sulcata.) 

 Cardium edule 



„ cchinatum. 

 „ rusticum. 

 Cyprina islandica. 

 Mactra .siibtruncata. 

 Mya areiiaria. 



AncT several other forms still undetermined. 



j\Iya truncata. 

 Mytilus edulis. 



„ modiolus. 

 Nucula Cobboldiag ? 

 Ostrea edulis. 

 Pinna. 



Pectuncnlus glycimeris. 

 Pecten pusio. 



„ opercularis. 



„ maximus. 

 Solen marginatus. 

 Tapes decussatus. 

 Tellina Balthica. 



„ crassa. 

 Venus casina. 



„ verrucosa. 

 Cliona. 

 Balanus. 



(2) Species recorded by Captain James ' not found ly A. Bell. 



Aporrhais pes pelicani. 

 Cyprseca ? sp. 

 Fusus crispns ? 

 Lacuna putcolus. 

 Littorina nidis. 



„ littorea. 

 Mitra ( ? cornea) ? 

 Melampus pyramidata. 

 Nassa semistriata. 

 Patella vulgata. 

 I'leurotoma. 

 Scalaria Trevelyana. 

 „ greenlandica. 



Trochus exasperatus. 

 Trichotropis borealis. 

 Trophon Barvicensis. 

 Anomia ephippium. 

 Leda pusio 1 



„ pcrnula. 



,, oblongoides ? 

 Mactra solida. 

 Nucula nucleus. 



„ prosiuia? 

 Pholas crispata. 

 Saxicava arctica. 

 Venus exoleta. 



Of these a number are either extinct or only found in seas north or 

 south of Britain, and such an association in the same area needs some 

 explanation. The species are: 



North — Astarte borealis, *Leda oblongoides, L. pernula, *N"ucula 

 Cobboldia), *N. proxima, Scalaria greenlandica. Purpura incrassata, 

 Pleurotoma pyramidalis, Trophon clathratus, T. craticulatus, Meyeria 

 pusilla. 



South — *Leda pusio, *Cypr£ea sp., Turritella incrassata, *Nassa 

 pemistriata, *Mitra sp., * Pleurotoma, 2 sp. 



Habitat unknown. Fusus (Menapii M.S.), F. n. sp., or allied to *F. 

 crispus, Melam|ius pyramidata. 



Those marked * are uncertain ascriptions according to Professor 

 Forbes, and the Mitra, Nassa, Fusus, and Ledas, like Cajjtain James* 

 notes, are no longer in evidence, being either lost or mislaid. Of Nncula 

 Cobboldice, a living Japanese species, I have a rolled fragment, which 

 seems to exhibit the peculiar sculpture of the shell. The Cyprsea now 

 (with Melampus) in the Museum of Practical Geology, London, requires 

 confirmation. 



The Mitre, according to Forbes, was an imperfect specimen, too 



' Journ. Buhlin Gcol. Soc, vol. iii. Some of these may have been obtained from 

 the marls and not from the gravels. 



