430 EXPLANATION OF PLATES. 
FIGURE, : PAGE. 
35,36. Segmentina (Planorbula) armigera, Say. U.S., . 107 
37. Aneylus concentricus, d’Orb. South America, . LOT 
38. Ancylus (Acroloxus) lacustris, Linn. Europe, . ae Ay 
39. Latia neritoides, Gray. New Zealand, ‘ : . 108 
40. Gundlachia ancyliformis, Pfr. Cuba, ; - 108 
Al. Amphibola nux-avellana, Chemn. New Zealand, - ES 
42. Amphibola (Ampullarina) fragilis, Quoy. New Zea- 
land, . : : 5 : f : : ; . 109 
PLATE 104. 
43. Aspergillum (Warnea) vaginiferum, Lam. Red Sea, 118 
44, Humphreya Strangei, A. Ad. New South Wales, . 118 
45. Clavagella (Bryopa) aperta, Sowb. Mediterranean Sea. 119 
46. Rocellaria hians, Chemn. West Indies, : : . 120 
47. Rocellaria (Spengleria) rostrata, Spengler. W. Indies, 120 
48. Teredo navalis, Linn. Tuberemoved. U.S., Europe, 120 
49. Uperotis clava, Gmel. Tranquebar, . : : . 123 
50-52. Kuphus arenarius, Linn. Philippines, . . 123 
53,54: Teredina personata, Lam. Eocene; Europe, . 123 
55-57. Pholas costata, Linn. Atlantic coast of U. 8. ¥ . 124 
58,59. Dactylina dactylus, Linn. England, . : . 125 
60. Monothyra orientalis, Gmel. India, ; ~ Ae 
61. Zirphza crispata, Liin. Atlantic’ coast of U. g.. 
Europe, : : «126 
62. Talona explanata, Gray. West Africa, : : . 126 
63. Jouannetia (Pholadopsis) pectinata, "Conrad. Cali- 
fornia, : ; : : 3 2 2T 
64. Parapholas Californica, Conr. Dorsal valves removed. 
California, : : : : ey 
65. Penitella penita, Conrad. California, : ; . 128 
66. Martesia striata, Linn. West Indies, - : » 128 
PLATE 105. 
67, 68. Gastrochzna mumia, Spengler. Philippines, bro 
69. Cucurbitula cymbia, Spengler. Hong Kong, . 7120 
70-13. Teredo Norvegica, Spengler. Europe, U.S., . 120 
74. Xylotrya palmulata, Lam. East Indies, . : . 123 
75. Turnus plenus,Gabb. Cretaceous ; California, i . 126 
76. Turnus (Xylophagella) elegantulus, Meek. Cret.; Id., 126 
77-19. Xylophaga dorsalis, Turton. England, A . 125 
80, 81. Navea subglobosa, Gray. California, . 3 . 126 
82, 83. Pholadidea papyracea, Solander. Europe, . . 126 
84. Talona explanata, Gray. West Africa, . 2 ae 
85. Solenopsis minor, M’Coy. Carboniferous ; Ireland, » Toe 
86. Pharella Javanica, Lam.’ Java, . : . tsi 
87. Solecurtus Dombeyi, Lam. W. Coast of 8. ne : . 133 
