PLATE XXIX. 



MM 



Fig. 61. SOLEN (HYPOGELLA) CUNEATUS. Natural size. 175 



Pig. 62. CORBULA HORNII. Natural size. 176 



62. Left valve. 



62 a. Eight valve. 



62 b. Anterior end. 



Fig. 63. %2/^d^_ T&r AL^EFORMIS. Natural size. 177 



Fig. 64. ANATINA QUADRATA. Natural size. 177 



Fig. 65. * PHOLADOMYA OREGONENSIS. Natural size. 178 



Fig. 66. PLEUROMTA PAPYRACEA. Natural size. 178 



Fig. 67. ARCOMYA UNDULATA. Natural size. 179 



Fig. C8. ? MACTRA TENTJISSIMA. Natural size. 179 



Fig. 69. 69 a. Hinge of CYMBOPHORA ASHBURNERII. 180 



69. Eight valve. 69 a. Left valve. 



Fig. 70. ASAPHIS MULTICOSTATA. Magnified. 181 



Fig. 71. TBLLIKA EEMONDII. Natural size. 182 



Fig. 73. T. ^EQUALIS Natural size. 182 



