EXPLANATION OF PLATES, 
PLATE 116. 
FIGURE. 
68, 69. Cypricardia rostrata, Lam. Australia, 
70. Cardium costatum, Linn. China, - é 
71. Cardium (Bueardium) ringens, Chemn. Gambia, 
72-714. Cardium (Trachycardium) muricatum, Linn, W.L., 
75. Cardium (Acanthocardia) aculeatum, Linn. Europe, . 
76. Cardium (Cerastoderma) edule, Linn. Hurope,. 
77. Cardium (Papyridea) hiulea, Reeve. Hab. ? 
78. Cardium (Fulvia) bullata, Linn. West Indies, 
79-81. Aphrodita Greenlandica, Chemn. Greenland, 
82. Levicardium (Protocardium) lyratum, Sowb. Mada- 
gascar, . f : 
83. Levicardium serratum, Linn. West Indies, 
84. Adacna edentulum, Pallas. Caspian Sea, - 
85. Adacna (Monodacna) Caspicum, Eichw. Caspian 
Sea, 
86. Adacna(Didaena)Donaciformis, Schroeter. Philippines, 
87. Hemicardium cardissa, Linn. Philippines, . 
88. Hemicardium hemicardium, Linn. Philippines, . 
89. Hemicardium (Fragum) unedo, Linn. Philippines, 
90, 91. Hemicardium (Ctenocardia) hystrix, Linn. 
ippines, 
Phil- 
92. Hemicardium ‘(Lunulicardia) retusa, Linn. “China, 
93. Conocardium aliforme, Sowb. Carboniferous ; Ireland, 
94. Cardiola cornucopie, Goldfuss Paleozoic ; Europe, 
95. Cardiopsis radiata, Meek and Worthen. Carbonifer- 
ous; Llls., ; ; - 
98. Chama lazarus, Linn. Mauritius, 
99. Chama (Arcinella) arcinella, Linn. West Indies, 
PLATE }1T. 
Ireland, 
. Conocardium ea Sowb. Koha eater 
Il Lithocardium aviculare, Lam, Hocene ; Paris Basin, 
2. Monopleura Urgonensis, Matheron. Cret. ; Europe, 
3, 4. Animal of Chama. 3. Right side, with the umbonal 
portion of themantleremoved. 4. Left side, showing 
the relative extent of the liver and ovarium. 
a, a, 
adductors; m, pallial line; e, excurrent orifice; |, 
branchial ; Ef foot and pedal. orifice; p, posterior 
pedal muscle ; t, palpi; g, gills (contracted); J, liver ; 
0, ovarium ; d dental lobes: 
5, 6. Diceras arietinum, aoe Coral oolite ; France, 
1. Diceras. Internal cast. , point of attachment ; 
casts of dental pits; f, e furrows produced by aad 
i e : : . 199 
ridges, : é - : C 
« 19S 
199 
