456 



GEOLOGY OF THE 



Pillar-lip smooth, and not re- 

 flected. Spire with 10 volu- 

 tions; length 1£ inch. 

 6. monile. Brocchi, p. 432. t. 8. f. 15. 



TROCHUS. 



1. elegans. Gmelin's Linne, p. 3581. — Sehrce- 

 ter, Einl. i. p. 682. — Zorn Na- 

 turf. vii. p. 167. t. 2. f. D. 1. & 

 D. 2. 



TURBO. 



1. clathratu- 

 lus. 



2. clathrus. 



3. elegantissi- 



mus. 



4. eonoideus. 



5. aculeatus. 

 PI. X. f. 9. 



Montagu, Test. Br. p. 297. ; and 

 Supp. p. 124. — Pennant's Br. 

 Zool. iv. p. 129- t. 81. f. 111. A. 

 — Dillwyn's Conch, p. 854. 

 Linne, Syst. Nat. p. 1237.— Do- 

 novan/ Br. Sh. i. t. 28.— Dill- 

 wyn's Conch, p. 854. 

 Dillwyn's Conch, p. 856.— Do- 

 novan, Br. Sh. v. t. 179. f. 1. 

 Brocchi, p. 660. t. 16. f. 2. 

 Shell imperforate, turrited, with 

 sub-contiguous whirls, and thick 

 longitudinal distant rihs, crown- 

 ed with inflected spines. Vo- 



lutions seven; apex pointed. 

 This shell is very like the T. 

 clathrus, but may easily be dis- 

 tinguished, from the ribs being- 

 crowned with spines. 

 6. tenebrosus. Maton and Racket, in Linn. 

 Trans. VIII. p. 160.— Mon- 

 tagu, Test. Br. p. 303. Sup. 

 t. 20. f. 4. 

 HELIX. 



1. subulatus. Dillwyn's Conch, p. 881. — Dono- 



van's Br. Sh. V. t. 172. 



2. Haliotoi- Linne, Syst. Nat. p. 1250. — Lis- 



dea. ter's Conch, t. 570. f. 21.— Dill- 



wyn's Conch, p. 973. 

 NERITA. 

 1. Canrena. Linne, Syst. Nat. p. 1251. — Lis- 

 ter's Conch, t. 560. f. 4.— Dill- 

 wyn's Conch, p. 975. 

 DENTALIUM. 



1. Entalis. Linnaeus, Syst. Nat. p. 1263. — 



Dillwyn's Conch, p. I065.-Do- 

 novan, Br. Sh. p. 48. — Mon- 

 tagu, Test. Br. p. 494. 



2. coarctatum. Brocchi, p. 264. t. 1. f*. 4. 



II. 



Fossil Shells found in the Banks of Sand at La Trinite, and on the west side of the 



Plain of Nice. 



BIVALVE. 



vis. 



2. Trinitea. 

 PI. IX. f. 3. 



MY A. 



1. inaequival- Montagu's Test. Br. p. 38. t. 26. 

 f. 7. — Dillwyn's Conch, p. 55. 



Maton and Racket in Linn. 



Trans, viii. p. 40. t. 2. f. 6. 

 Shell ovate, depressed, umbo a 

 little turned to one side: pos- 

 terior slope somewhat truncat- 

 ed ; with strong regular con- 

 centric ridges, which terminate 

 with a serrated appearance on 

 the posterior slope. Hinge with 

 one strong elevated tooth, which 

 fits into a socket in the oppo- 

 site valve, with a lateral tooth 

 in the anterior slope, and a 

 groove in the posterior ; length 

 fths of an inch, breadth 2^ 

 eighths. 



3 striata. 

 PI. IX. f. 12. 



4. undulata. 

 PL IX. f. 13. 



Shell elliptical, with strong trans- 

 verse striae : hinge with an ob- 

 lique tooth and small socket. 

 Posterior end somewhat round- 

 ed ; anterior end more pointed : 

 inside smooth, with strong mus- 

 cular impressions. Length 1^ 

 eighth, breadth 2£. 



Shell sub-rotund, beak sharp, and 

 much turned to one side : hinge 

 with a deep groove, in which 

 the cartilage is fixed : posterior 

 slope somewhat pointed and an- 

 gular. Inside with strong lon- 

 gitudinal obsolete striae, which 

 terminate about an eighth of an 

 inch from the base : the mar- 

 gin is smooth, with a strong 

 transverse groove. Outside 

 smooth, 



