Chapter XI.--Fossil Testaceous Mollusks, or Shells, 374. Mollusca,

374. Acephala, 375. Encephala, 378. Fossil Bivalve Shells, 381. Shell-Rocks, 382. Fossil Brachiopoda, 388. Terebratula, 389. Spirifer, 390. Rhynchonella, 391. Pentamerus, 391. Orthis, Leptæna, and Productus, 392. Calceola, 392. Crania, 392. Orbicula, 392. Obolus, 392. Lingula, 393. Hippurites, 393. Fossil Shells of the Lamellibranchiates, 394. Monomyaria, 395. Ostrea, 395. Gryphæa, 396. Spondylus, 398. Plagiostoma, 399. Plicatula, 400. Pecten, 400. Inoceramus, 401. Avicula, 404. Dimyaria, 404. Venericardia, 405. Pectunculus, 405. Nucula, 406. Pinna, 406. Mytilus, 407. Modiola, 407. Pholadomya, 408. Pholas, 408. Teredo, 410. Trigonia, 412. Fossil Fresh-water Bivalves, 413. Unio, 414. Cyclas, 416. Fossil Pteropoda, 417. Fossil Gasteropoda, 417. Fresh-water Univalves, 421. Paludina, 421. Limnæus, 423. Planorbis, 423. Melanopsis, 424. Marine Univalves, 424. Fusus, 425. Pleurotoma, 425. Cerithium, 425. Potamides, 425. Rostellaria, 426. Dolium, 426. Trochus,426. Solarium, 426. Conus, 426. Pleurotomaria, 427. Euomphalus, 429. Murchisonia, 430. Sphærulites, 430. Molluskite, 432. Geological Distribution of Bivalve and Univalve Mollusks, 436. On the Collecting and Arranging Fossil Shells, 441. British Localities of Fossil Shells, 443.

CONTENTS OF VOL. II.

Description of Frontispiece (Plate II.)

List of Lignographs in Vol. II.

Table of Contents.