602 



MUSEO NACIONAL DE BUENOS AIRES. 



Polynices subtenuis, 71, 98, 151, 157, 159. 



Polynices uber, 98, 151, 153, 507. 



Polynices uberina, 158. 



Polynices Vidali, 155. 



Polypus, 503. 



Potámides patagonensis, 52. 



Potamoinya, 469. 



Proscaphella, 59, 202-206, 211, 500. 



Proscaphella brasiliensis, 101. 



Proscapliella Cossmanni, 100, 205-208. 



Proscaphella Dome3-koana, 206. 



Proscaphella fusiformis, 101. 



Proscaphella gracilior, 100, 205-208. 



Proscaphella Orbignj-ana, 101, 108, 205, 



208. 

 Proscaphella Petersoni, 101, 108, 205, 



208. 

 Proscaphella quemadensis, 101, 109, 205- 



208. 

 Protocardium serum, 86. 

 Protothaca, 296, 297, 333, 350, 522. 

 Protothaca antiqua, 296, 298. 

 Protothaca Dombeyi, 198. 

 Psammobia, 312, 351, .501. 

 Psammobia Burmeisteri, 105, 312. 

 Psammobia Darwini, 311, 333, 351, 417. 

 Psammobia guassu, 105, 312. 

 Psammobia patagónica, 105, 108, 311, 



312, 351. 

 Psammobia solida, 311. 

 Psammobia tehuelcha, 392, 417. 

 Psammotella, 313. 

 Pseudamussium, 249, 505, 508. 

 Pseudamussium corneum, 249. 

 Pseudamussium gelatiuiosum, 249. 

 Pseudamussium Hochstteteri, 85, 91. 



Pseudamussium Jeffreysi, 249. 

 Pseudamussium laziarinum, 409. 

 Pseudamussium rufiradiatum, 249. 

 Pseudamussium vitreum, 249, 548, 554. 

 Pseudamussium 5'ahlensis, 85, 91. 

 Pseudocyrena, 413, 414. 

 Pseudoliva, 344. 

 Pseudotylostoma, 39, 40, 58. 

 Pseudotylostoma Eomeroi, 29, 31, 33, 



39, 489. 

 Pteria colymbus, 532. 

 Pteroceras, 527. 

 Ptychosalpinx, 29, 344. 

 Pugnellus, 74. 



Puncturella, 500, 508, 519, 520. 

 Puncturella cónica, 508. 

 Puncturella falcklandica, 5-54. 

 Puncturella malvina, 508. 

 Puncturella noachina, 508. 553, 554. 

 Puncturella phrygia, 519. 

 Pupillia, 123. 



Pupillia aperta, 123, 399, 497, 509. 

 Pupillia aperta tehuelcha, 392, 399. 

 Pupillia tehuelcha, 399. 

 Purpura, 92, 184, 426, 514, 536. 

 Purpura cingulata, 525. 

 Purpura coronata, 531. 

 Purpura dilatata, 523. 

 Purpura haemastoma, 425. 

 Purpura haemastoma undata, 427, 533. 

 Purpura helenae, 533. 

 Pyrginus, 443. 

 Pyrotherium, 42, 49, 54. 

 Pyrula, 2, 173, 501. 

 Pyrula aff. Hombroniana, 99, 173. 

 Pyrula nodulifera, 2. 



R. 



Ehynchonella, 471, 472. 

 Rhynchonella patagónica, 470. 481. 

 Ehj'nchonella plicigera, 470, 481. 

 Ehj'nchonella squamosa, 481. 

 Eingicula, 120, 501. 

 Eingicula magellanica, 96, 120. 

 Eingicula nitida, 120. 

 Eissoa, 496, 504, 514, 529, 540. 

 Eissoa texta, 367. 



Eissoina Chesneli, 535. 

 Eotella, 129. 

 Eostellaria, 29, 35. 

 Eostellaria chubutensis, 29, 31, 32, 48. 

 Eostellaria Cossmanni, 49. 

 Eostellaria patagonensis, 29, 31. 

 Eostellaria Eothi, 28, 29, 31. 

 Eostellaria striatissima, 49. 



S. 



Sagitta hamata, 546. 

 Sanguinolaria, 79, 311, 313, 500, 502, 505, 

 506. 



Sanguinolaria antárctica. 311. 

 Sanguinolaria operculata, 530. 

 Sanguinolaria operculata Hanleyi, 531. 



