Index and Glossary 



Pen shell, noble, 401 

 Oldroyd's, 402 

 Philippine, 402 

 prickly, 401 

 rough, 401 

 rude, 402 

 Pen Shells, The, 401 

 Periostracum : epidermal covering of the 



living shell, 61 

 Periploma discus, 328 

 Leana, 328 

 papyracca, 328 

 planiscula, 328 

 Periwinkle, checkered, 176 



common, 175 



gray, 176 



pagoda, 176 



rough, 176 



shore, 174 



zigzag, 176 

 Periwinkles, The, 174 

 Pernas, The, 398 

 Pcrna ephippiuni, 398 



isognonmn, 399 



legumen, 399 



marsupumt, 398 



vespertilio, 399 

 Petricola carditoidcs, 345 



Pholadifonnis, 345 

 Pctricolidcs, 345 

 Phacoides, 367 

 Phasianella afflnis, 208 



australis, 207 



compta, 208 



puUa, 207 



tenuis, 208 



tessellata, 208 



umbilicata, 208 

 PhasianellidcF, 207 

 Pheasant Shells, The, 207 

 PholadidcB, 315 

 Pholas Californica, 316 



costata, 316 



Pacifka, 316 



truncata, 316 

 Phyllonotus, sub-genus, 33 

 Physa, 13, 293 

 Pkysa amptillacea, 294 



ancillaria, 294 



eyrina, 294 



hypnorum, 294 



microstoma. 294 

 Piddock, California, 316 



paper, 317 



rough, 316 



truncated, 316 



wood, 317 

 PiDDOCKS, The, 31 s 

 Pinna Maura, 402 



muricata, 401 



nigra, 402 



nobilis, 401, 403 



Oldroydii, 402 



Philippinensis, 40 a 



rudis, 401 



rMgo5a, 402 



seminuda, 401 

 Pinnidce, 401 

 Pinnotheres slrombi, 120 

 Pisidiiitn abditum, 355 

 Placenta placenta, 422 



se//a, 422 

 Plactinanoniia macrochisma, 421 

 Placunidcr, 422 

 Plaited Shells, The, 406 

 Planorbis, bicarinatus, 295 



campanulatus, 295 



trivolvis, 13, 295 

 Platyodon cancellatus, 325 

 Plenrobema ^sopus, 375 

 Pleurocera, sub-genus, 188 



Pleurodonte gigantea, 267 



Jamaicensis, 267 



sinuata, 266 

 Pleurotoma Carpenteriana, 107 



circinata, 108 



grandis, 107 



incisa, 108 



inennis, 108 



mwsta, 109 



perversa, 108 



torosa, 109 



vinosa, 108 



virgo, 107 

 Pleurotomaria Adansoniana, 221 



Beyrichi, 221 



0!foj'a«a, 221 

 Pleuroloniariidm, 221 

 Pleurotomida;, 107 

 Plicatula Manielli, 406 



ramoja, 406 

 Pod Shells, The, 168 

 Polygyra abollabris, 270 



Chiricahuana, 270 



devia, 270 



Townsendiana, 270 

 Polygyrella polygyrclla, 266 

 Polymita picta, 265 

 POLYPLACOPHORA (Order). 237 

 Polypus, 445 



undosum, 211 

 Pomatiopsis Californica, 192 



lapidarta, 192 

 Pomaulox inequale, 211 

 Pompano shells, 343 

 Pond Snails, The, 195, 290 

 Pond-weed, 1 2 

 Posterior, defined, 20 

 Potamidcs pidustris, 181 



sacrata, 181 



Telescopium, 181 

 Potamogeton densum, 12 

 Pouch snail, jug, 294 



tadpole, 294 

 Pouch Snails, The, 203 

 Protective colouration, 44. 125, 161, 

 Protective mimicry, 250, 272 

 Psammobia Californica, 344 

 Pterocera bryonia, 121 

 Pteronotus, sub-genus, 30 

 PTEROPODA, 241 

 Pupa, 280 

 PupidiF, 280 

 Ptipilla, armifera, 280 

 PupillidcB, 280 

 Purple, chocolate, 43 



Florida, 45 



grooved, 46 



open-mouthed, 43 



princely, 43 



rock, 44, 46 



wrinkled, 46 

 Purples, The, 42 

 Purpura, 42 

 Purpura chocolatum, 43 



consul, 43 



crispata, 46 



Floridana, 45 



gigantea, 43 



lapillus, 44 



/t'wia, 46 



patula, 43 



Per sic a, 43 



saxicola, 44, 46 

 Purpurin.'E, sub-family, 42 

 Pyramid Shells, The, 172 

 Pyramid snail, alternate, 264 

 mountain, 264 

 streaked, 264 

 Pyramidella conica, 172 

 PyramidelUdo', 172 

 Pyramidula alternata, 264 



191 



476 



