1 56 Mr. Smith on the Tertiary Deposits of the Basin of the Clyde. 



12. Mactra striata, Wern. Mem. vol. viii. p. 106, PI. I. f. 22. 



13. Saxicava sulcata, Wern. Mem., vol. viii. p. 97, Note ; Phil. Trans., 1835, PI. II. fig. 25 — Closely 



allied to the S. rugosa, but much larger and more regular in the transverse striae or ridges. It 

 occurs in a fossil state at Udevalla. 



14. Panopaa BivoncB, Wern. Mem., vol. viii. p. 107, PI. 11. f. 4 ; Philippi Mollusc. Sicil., PI. II. f. 1 



Fossil in the crag and Sicily ; a single specimen has been dredged on the east coast of England, 

 now in the possession of Mr. Jeffries (vide Nat. Hist. Mag., v. viii. p. 582), which Mr. Sowerby 

 considers to be the same species. 



15. Natica clausa, Wern. Mem., v. viii. p. 103, PI. I. f. 16 ; Phil. Trans., 1835, PI. II. f. 7.— Recent in 



the Arctic seas and fossil at Udevalla. 



16. Natica glaucinoides, Min. Con., p. 479, f. 5. — Found also in the crag. 



17. Natica fragilis.— This shell is smaller and more fragile than the N. glaucinoides, and has no callus 



or tooth over the umbilicus. 



18. Nassa Mo?iensis. — Found by Mr. E. Forbes in an elevated deposit in the Isle of Man. It differs 



from the N macula in having the spire less produced ; the body-whorl much more ventricose 

 and the longitudinal ribs fewer. It appears intermediate between the N. macula and N. ambigua. 



19. Buccinum granulatum, Min. Con., PI. CX. f. 4. — Found in the brick earth of the Nar, which I con- 



sider a newer pliocene deposit (Woodward's Geol. of Norfolk, p. 36). It is also a crag fossil. 



20. Buccinum striatum, Wern. Mem., v. viii. p. 100, PI. I. f. 9. 



21. Trochus inflatus, Wern. Mem., v. viii. p. 1. f. 10. — This appears to be the same as one found fossil 



at Udevalla, figured by Hisinger, Lethcca Suecica, PI. XXX. f. 3, and erroneously supposed to 

 be the T. tumidus of Montagu. Recent in the Arctic seas, in Mr. Bunbury's collection. 



22. I'urbo expansus, Wern. Mem., v. viii. p. 101, PI. I. f. 12. — "Common in the Arctic seas." — Des- 



hayes. 



23. Velutina unduta, Wern. Mem., v. viii. p. 101, PI. I. f. 15. — This shell is also said by M. Deshayes 



to be an Arctic species. 



24. Fusus Peruvianus, Murex, Sow. Min. Con., PI. CCCCXXXIV. f. 1. ; Wern. Mem., v. viii. p. 100, 



PI. II. f. 5 and 9, Lethcea Suecica, PI. XXX. f. 7. — It is also found fossil in the crag and at 

 Udevalla, and recent in the Arctic seas. 



25. Fusus imbricatus, Wern. Mem., p. 100, pi. I, f. 5, 6, and II. f. 7. — In my catalogue in the Wer- 



nerian Memoirs this is considered as the young of F. Peruvianus, but as no such change takes 

 place in its analogues from the crag and Arctic seas, I am now satisfied it is a distinct species. 



26. Fusus curtus. 



27. Bulbus Smithii, Wern, Mem., v. viii. p. 103, PI. I, f. 18. — Resembles a Natica, but is destitute of 



an umbilicus or cavity on the pillar lip ; there is an unnamed shell from the Sicilian Pleistocene 

 in the Collection of the Geological Society, which I consider to be identical with it. 



As this catalogue diiFers considerably from that published in the Wernerian 

 Memoirs, I think it right to explain that the new shells have been discovered 

 since it was printed, and that I omit the following for the reasons assigned. 



1. Rissoa Fallax, Wern. Mem., PI. I. f. 7, 8 — Considered by Mr. Sowerby to be Cingula cingilla, H. 



2. Area papulosa, lb., PI. I. f. 19. Since discovered recent by Capt. Portlock. 



3. Turritella cingulata, lb., PI. I. f. 23. Want of evidence. See Memoir, p. 101. 



4. Bulla Ampulla. 



5. Oliva. These two last were found in the elevated marine beds, described by Mr. Murchison in his 



Silurian System ; but till the testaceous fauna be more thoroughly investigated, it is impossible 

 to say whether they belong to the same period as the Clyde shells or not. 



