152 THE LIFE OF THE MOLLUSCA 



Malleus vulgaris, xvii. 



Mandibles, 9 



Mangilia tmiiata, xii. 



Mantle, 2 



Mantle cavity, 36 



Mantle opening in bivalves, 27, 



IV. 



Margarita, 63 



Margaritana margaritijera (Fresh- 

 water Pearl Mussel), 140 



Marginella, 63, 125 



Marine forms on land, 59 



Marisa comu-arietis, v. 



Martesia acuminata, xx. 



Medicine, Snails used in, 140 



Megalodontidse, 46 



Megaspira elatior, xiii. 



Melampus, 116 



Mel and a, 48, 52, 88, 91 



Melaniidas, 58 



Melanopsis, 52 



Meleagrina (Pearl Oyster), 5, 79, 

 140 



Meleagrina barbata, xvi. 



Meleagrina margaritifer, xvii. 



Mercenaria Mortoni, xvi. 



Meretrix dione, xix. 



Metapodium, 117 



Metostracon, 106 



Mimicry, 123 



Mz'^a episcopalis, xi. 



Mitrularia Dillwyni, x. 



Modiolaria, 63 



Modiolaria marmorata, 80 



Modiolaria marmorata, Embryo, 

 xxix. 



Modioloides priscits, 45 



Modiolus = Volsella 



Moisture, need of, 70 



Mollusca, definition, 1 



Money Cowry, 142 



Monomyaria, 34 



Monopleura imbricata, xix. 



Montacuta, 80 



Montacuta substriata, xviii. 



Money, Shells used for, 142 



Morum cancellata, v. 



Mother of Pearl, 4 



Mouth of Shell, 19 



Mucus used in crawling and 



climbing, 1I5 

 Murchisonia, 45 

 Murex, 68, 69, 143 

 Murex haustellum, xi. 

 Murex palma-rosce, v. 

 Murex ramosus, xxxii. 

 Murex tenuispina, v. 

 Mussel, Common Marine. See 



Mytilus. 

 Mussels, Freshwater. See Uni- 



onidae. 

 Mutelidae, 58 

 Mya, 35, 57 > 63, "8, 133 

 ilfjya truncata, xv., xix. 

 Myidae, 108 



Myochama anomoides, xx. 

 Myopsida, 42, 132 

 Mytilidse, 9, 46, 109, 132 

 Mytilus (Common Mussel), 26, 



34, 53, 54, 57> 61, 74, 107, 112, 



113 

 Mytilus Calif ormcus, xvi. 

 Mytilus edulis, 61 

 Mytilus samaragdinus, xviii. 

 Myzomenia Banyulensis, Embryo, 



xxix. 



Nacreous layer, 4 



Nassa (Dog- Whelk), 24, 54, 68, 



87, 104 



Nassa arcularia, xi. 



Nassa callosa, 142 



Nassa neritea, xi. 



Nassodonta, 58 



Natalina, 70 



Natica, 19, 68, 116, 132 



Natica A Ideri, ii. 



Natica didyma, vi. 



Natica heros, vi. 



Natica mamilla, vi. 



Natica monilifera : radula, iii. 



Natica Recluziana, vi. 



Naticidas, 132 



Nautiloidea, 39. 41, 46, no 



Nautilus, 5, 10', 35, 36, 64, 70, 



88, no, in, 119, 127, 132, 141, 

 xxi. 



Nautilus pompilius, i . 



