Subject Matter ajid Commoji Names 



513 



Rattle Shell, see Blackberry Drupe, 2 1 1 

 Ravenel's Dove-shell, 223, pi. 25CC 

 Ravenel's Egg Cockle, 400 

 Ravenel's Scallop, 362, pi. 33g 

 Rayed Cockle, see Gaudy Asaphis, 4^9 

 Razor Clams, species of, 442 



Recluz's Moon-shell, 187, pi. 2oi 



Red Abalone, 92, pi. 2a 



Red-brown Ark, 343, pi. 27q 



Reddish Mangelia, 272 



Red-fingered Eolis, 310, pi. 15a 



Red Northern Chiton, 322 



Red tide, 39 



Red Turban, 125, fig. 35 



Reed Tusk, 331 



Reflexed Haloconch, 131 



Regular Chiton, 321 



Regular Marginella, 258 



Rehder, Harald A., 68 



Rehder's Baby-bubble, 275 



Reproduction, in snails, 24 

 in clams, 40 



Resilium, definition of, 83 



Respiration, in snails, 24 

 in clams, 38 



Reticulate Ark, see White Miniature 

 Ark, 343 



Reticulate Wentletrap, 163, fig. 4od 



Reticulated Cowrie-helmet, 194, pi. 9c 



Reticulated Hehnet, see Reticulated 

 Cowrie-helmet, 194 



Rhipidoglossate, 79 



Ribbed Horsenmssel, see Atlantic 

 Ribbed Mussel, 351 



Ribbed Pod, see Atlantic Razor Clam, 

 442 



Ribbed Stronib, see Milk Conch, 174 



Ribbed Top-shell, 116, fig. 33g 



Ribbed Western Corbula, 459 



Rice Shell, see Common Rice Olive, 247 



Rim Shell, see Common Atlantic Margi- 

 nella, 257 



Rimulas, species of, 94, 95 



Ringed Top-shell, 115, fig. 33f 



Rio Janeiro Chiton, 319, fig. 67c 



Rissoinas, species of, 136-138 



Ritter's Trivia, 179 



Rocellaria, Atlantic, 459 



Rock-boring Mussel, see Kelsey's Date 

 Mussel, 357 



Rock-dwelling Semele, 435, pi. 29t 



Rock Oyster, see Jewel Box, 392 



Rock-shells (Thais), species of, 213 



Roden Mounds, 7 



Rollins College, 68 



Roosevelt, F. D., 401 



Roosevelt's Marginella, 254, pi. ii-o 



Rooster-tail Conch, 175, pi. 56 



Rose Cockle, see Prickly Cockle, 397 



Rose Murex, 202 



Rose Petal Semele, 435, pi. 29W 



Rose Petal Tellin, 427, pi. 4oh 



Rostrate Cuspidaria, 476, pi. 32) 



Rostrate Piddock, 464 



Rosy Jackknife Clam, 444 



Rosy Keyhole Limpet, 100, pi. i7e 

 Rough File Shell, see Antillean Lima, 370 

 Rough Girdled Chiton, 317, fig. 67a 

 Rough Keyhole Limpet, 97, pi. i8b 

 Rough Lima, 370, pi. 35f, o 

 Rough Limpet, 103, pi. 18-I 

 Rough Nuttall Chiton, 314 

 Rough Scallop, 367, pi. 34d, e 

 Rough Vase Shell, see Caribbean Vase, 



245 

 Royal Bonnet, 192, pi. 9!! 

 Royal Comb Venus, 415, pi. 39f 

 Royal Florida Miter, 248, pi. 13! 

 Royal Marginella, 256, pi. ii-l 

 RufHed Rimula, 94, pi. 17-0 

 Rupellarias, species of, 420 

 Rustic Rock-shell, 214, pi. 25f 

 Rusty Dove-shell, 220 



Sailor''s Ear, see Channeled Duck Clam, 



449 

 Salle's Auger, 267 

 Salmon Tellin, 426, pi. 3iy 

 Samuel, Marcus, 1 1 

 Sanded Lyonsia, 468 

 Sanderson's Paper-bubble, 278, fig. 59d 

 San Diego Lamellaria, 175, fig. 43d 

 San Diego Limopsis, 347, fig. 73 

 San Diego Scallop, 361, pi. 33e 

 San Diego Shipworm, 467 

 Sand Pandora, 470 

 Sandpaper Trophon, 208 

 San Pedro Auger, 267 

 San Pedro Dwarf Olive, 247 

 San Pedro Trifora, 159 

 Santa Barbara Spindle, 244, pi. 24Z 

 Santa Rosa Murex, 206, fig. 45d 

 Sardonyx Helmet, see King Helmet, 193 

 Sargassum Nudibranch, 308 

 Sargassum Snail, Brown, 156, pi. 21k 

 Saw-toothed Pen Shell, 360, pi. 27V 

 Saxicave, Arctic, 452, fig. 92a 

 Say, Thomas, 68 

 Say's Chestnut Mussel, 356 

 Say's False Limpet, 311, fig. 65 

 Say's Pandora, 469, fig. 96b 

 Say's Tellin, 424 

 Scalas, see Wentletraps, 161 

 Scaled Worm-shell, 144, pi. 2oe 

 Scale-sided Piddock, 464 

 Scallop-edged Wentletrap, 162 

 Scallops, species of, 361-369 

 Scaly Chiton, see Rough Nuttall Chiton, 



314 

 Schmitt's Volute, 251, pi. 136 

 Schramm's Chiton, 326, fig. 67e 

 Schrann/i^s Loripi?ms, see Chalky But- 

 tercup, 390 

 Schwengel, J. S., 205, 414 

 Schwengel's Venus, 414, pi. 38n 

 Scientific names, 85 

 Scissor Date Alussel, 357, pi. 29J 

 Scorched Mussel, 352, pi. 35J 

 Scotch Bonnet, 192, pi. 9e 

 Screw Shell, see Turret-shell, 141 



Sculpture in shells, 76, 84 

 Sculptured Alabine, 158 

 Sculptured Top-shell, 112, pi. 17W 

 Sea Butterflies (Pteropoda), species of, 



292 

 Sea-hares, species of, 285, fig. 60 

 Seaweed Limpet, 105, pi. i8z 

 Semeles, species of, 434 

 Sennott, John and Gladys, 261 

 Sennotts' Cone, 261, pi. 1411 

 Sentis Scallop, 363, pi. 34a 

 Sepia ink, 480 

 Serene Gould Clam, 415 

 Sex reversal, in snails, 25 



in clams, 41 

 Sexuality, in snails, 25, fig. 7 



in clams, 41 

 Shapes of bivalves, 80, fig. 26 

 Shapes of gastropods, 73 

 Shark Eye (Polinices), 186, pis. 5k, 2 2h 

 Sharp-knobbed Nassa, 237, fig. 53c 

 Sharp-ribbed Drill, 219, fig. 47c 

 Sharp-tur?j Scallop, see Zigzag Scallop, 



362 

 Shell Oil Company, 1 1 

 Shell structure, 33, fig. 10 

 Shell Transport Co., 10, 11 

 Shield Limpet, 102, pi. i8n 

 Shiny Atlantic Auger, 266, pi. 26h 

 Shiny Cooper's Clam, 421 

 Shipping shells, 67 

 Shipworm, copulation, 42 



destruction, 4 



habits, 45 



species of, 465 

 Short Coral-shell, 219 

 Short-frond Murex, sec West Indian 



Murex, 203 

 Short-tailed Latirus, 241, pi. iif 

 Short Yoldia, 340, pi. 27b 

 Shouldered Pheasant, 127, pi. i7r 

 Sickle Razor Clam, see Blunt Jackknife 



Clam, 443 

 Silky Buccinum, 225, pi. 24U 

 Simnias, sjjecies of, 182 

 Simpson's Venus, 414 

 Single-toothed Simnia, 182, pi. -jt 

 Siphonal canal, definition of, 76 

 Siphons, of clams, 35, figs. 11, 12 



of snails, 18, fig. 3 

 Sitka Periwinkle, 134, pi. 20b 

 Slender Bittium, 156 

 Slipper-shells, species of, 170-172, pis. 



20, 21 

 Slit-shells, 91 



Slit Worm-shell, 145, pL 2ig 

 Small Cerithiimi, see False Cerith, 15^ 

 Small-eared Lima, 371 

 Small False Donax, 441, pi. 3oi 

 Smith's Martesia, 465 

 Smoke Shell, Longhorned, pi. 23W, not 



in text 

 Smooth Astarte, 376, pi. 28s 

 Smooth Atlantic Tegula, 118, pi. i7p 

 Smooth Duck Clam, 449 



