Ostrea frons. Park. Pl. II. fig. 4 × Sow. M. C. tab. 365, page 89. (In the collection of Mr. Wetherell.) O. vesicularis, Lam. Pl. II. fig. 5 × Sow. M. C. tab. 392, page 127. (In the collection of the Author.) O. Normaniana × D'Orb. tab. 488, fig. 1-3, page 746. (In the collection of Mr. Rose.) Pecten Beaveri × Sow. M. C. tab. 158, page 131. (In the collection of Mr. Rose.) Spondylus latus × × Sow. M. C. tab. 80, fig. 2, page 184. (In the collection of Mr. Rose and Author.) Ammonites alternatus ? × Woodward, Geol. Norfolk, tab. 6, fig. 23. Ammonites complanatus × Sow. M. C. tab. 567, fig. 1. (In the collection of Mr. Rose.) A. rostratus × Sow. M. C. tab. 173, page 163. (In the collection of Mr. Rose.) A. serratus, Parkinson × Sow. M. C. tab. 308, page 3. (In the collection of Mr. Rose.) Belemnites attenuatus. Pl. IV. fig. 5 × Sow. M. C. tab. 598, fig. 2, page 176. (In the collection of Author.) B. minimus. Pl. IV. fig. 8 × × × Sow. M. C. tab. 598, fig. 1, page 175. (In the collections of Messrs. Bowerbank, Bean, Rose, Wetherell, and Author.) Belemnites Listeri. Pl. IV. fig. 6 × Phil. Geol. York. tab. 1, fig. 18. (In the collection of Author.) B. ultimus, D'Orb. Pl. IV. fig. 7 × Sharpe, Chalk Moll. tab. 1, fig. 17. (In the collections of Mr. Bean and Author.) Nautilus simplex. Pl. I. fig. 3 × × Sow. M. C. tab. 122, page 122. (In the collections of Mr. Rose, Mr. Wetherell, and Author.) Otodus appendiculatus × Ag. vol. iii., page 270, tab. 32. (In the collection of Mr. Wetherell.) Tooth of Saurian × (In the collection of Mr. Bean.) Vertebra of Polyptychodon (?) × (In the collection of Author.) Siphonia pyriformis is probably the head of Spongia paradoxica. In the cabinet of Mr. Rose is a mass of the latter, to which a head similar to the one figured is attached.