Centronotus radix 113 Byssoarca Zebra 118 Pteronotus pinnatus 122 Mitreola monodonta 128 ---- terebellum 128 Mitra acuminata 128 * * * * * * _In Systematic Order._ VOLUTIDÆ. pl. Voluta cymbium 84 ---- bullata 15 Cymbiola vespertilio 83 Harpula vexillum 77 Volutilithes muricata 53 ---- pertusa 53 Schaphella maculata 87 Mitra episcopalis 49 ---- melaniana 5 ---- tessellata 5 ---- bicolor 19 ---- carinata 19 ---- strigata 19 ---- fulva 30 ---- ambigua 30 ---- punctata 30 ---- acuminata 128 Tiara Isabella 50 ---- sulcata 50 Mitrella fusca. ocellata 54 ---- olivæformis 54 Mitreola monodonta 128 ---- terebellum 128 Oliva volutella 40 ---- striata 40 Olivella purpurata 58 ---- eburnea 58 Hiatula Lamarcii 78 ---- pallida 78 ---- maculosa 78 Ancillaria rubiginosa 4 Marginella oblonga 44 ---- guttata 44 MURICIDÆ. Murex (Phyllonotus) Imperialis 67, 109 ---- eurystomus 100 ---- erythrostomus 73 Centronotus radix 113 Pteronotus pinnatus 122 STROMBIDÆ. Strombus Peruvianus 39 Rostellaria curvirostris 34 Conus lithoglyphus 65 ---- fumigatus 68 ---- franciscanus 68 HELICIDÆ. Ampullaria carinata 9 ---- Nilotica 38 ---- subcarinata 38 ---- fasciata 64 Melania amarula and setosa 29 Achatinella, six species, 99, 108, 123 Geotrochus pileus 91 Caracolla acutissima 96 Plecocheilus undulatus 103