LAMARCKIAN ARRANGEMENT. vii 
Pedum. Ost. 75. 
Lima. Ost. 50 to 57: Ost. Sup. 5.—Apx. xxiv. 41, 42. 
Pecten (including Hinnites). Ost. 1 to 49; Ost. Sup. 1 to 4. (Hin- 
nites 7).—APX. xxiv. 43, 
Plicatula. Spo. 3.—Apx. xxiv. 44. 
Spondylus. Spo. 1, 2, 4?—Apx. xxiv. 45, 46. 
Ostrea. Ost. 61 to 74, 762: Myt. 1, 2, 3: Ost. Sup. 8.—Apx. xxiv. 
47, 48. 
Vulsella. Ost. 84.—Apx. xxiv. 49. 
Placuna. Ano. 29, 30.—Apx. xxiv. 50. 
Anomia. Ano. 3 to 13, 31.—Apx. xxiv. 51, 52. 
Crania. Ano. 1, 2. 
Orbicula. Ano. Sup. 2.—Apx. xxiv. 53, 54. 
Terebratula. Ano. 14 to 27,322: Ano. Sup. 1, 3, 4.—Apx. xxiv. 55 
to 59. 
Lingula. Myt. 45, 46.—Apx. xxiv. 60. 
Ifyalea. Ano. 28. 
Spirialis. Hel. 115. 
Limacina. Arg. 9. 
Chitonellus. Chi. 40. 
Chiton. Chi. 1 to 39: Chi. Sup.1 to 12. 
Patella. Pat. 14 to 16, 18 to 38, 40, 52, 53, 55?, 58 to 62, 64, 65 ?, 
66, 68 to 75, 79, 80, 83. 
Acmea. Pat. 17, 48, 50, 63, 76, 78, 81, 82. 
Siphonaria. Pat. 49: Pat. Sup. 1. 
Pleurobranchus. Bul. 16. 
Umbrella, Pat. 85. 
Parmophorus. Pat. 84. 
Emarginula. Pat. 39, 77, 86 to 88: Pat. Sup. 6, 8. 
Fissurella. Pat. 90 to 102: Pat. Sup. 7. 
Pileopsis. Pat. 41 to 47, 51. 
Calyptrea. Pat. 1 to 7: Pat. Sup. 2 to 5. 
Crepidula. Pat. 9 to 13. 
Ancylus. Pat. 56, 57. 
Bullea. Bul. 14, 15, 22. 
Bulla. Bul. 12, 56 to 60: Vol. 21: Bul. Sup. 1, 2. 
Helix (including Carocolla). Tro. 73, 74, 119: Hel. 3 to 6, 9 to 21, 
27 to 39, 43, 44, 45, 51, 54, 57 to 69, 76 to 84, 86 to 96, 99, 105, 
117, 118, 123 to 133, 189: Ser. 29: Hel. Sup. 1 to 8, 10, 11, 14, 
15, 16, 32 tu 59, 61, 62, 74, 79, 60? to 85. 
Anostoma. Hel. 26, 
