SUBJECTS INDKX. 



587 



Muscidae, 874. 



Myopsida, 235. 

 Mytilidae, 14, 37. 

 Mytilus, 22-25, 30, 33, 

 37, 39, 45, 47, 68-71. 



— edulis, 22, 24, 68. 

 Mvzomenia, 1, 15, 19. 



N. 



Nais, 577. 



Nassa, 100, 102, 106, 

 113, 116-121, 141, 149, 

 152, 163, 200, 208, 315. 



— mutabilis, 103, 112, 

 116, 117. 150, 152,207. 



Nassopsis, 105. 

 Natalina, 200. 

 Natica, 149. 

 Nautiloidea, 235. 

 Nautilus. 237, 268, 286- 



288, 293-296, 301, 304- 



308, 331. 

 Neaera, 22. 

 Nemertini, 322, 575. 

 Neomenia, 1. 

 Nephropneusta, 182. 

 Neritidae, 99, 199. 

 Neritiua, 99, 107, 110, 



111, 116,118,129, 130, 



133, 141. 



— fluviatilis, 103, 116. 

 Nucleobranchia, 100, 



153. 

 Nucula, 22, 37, 61, 63, 



72, 75, 82. 

 Nuculidae, 48, 61. 

 Nudibranchia, 100. 



O. 



Octacnemus, 334. 

 Octopoda, 235. 

 Octopus, 236-239, 251, 

 253, 257, 264-267, 295. 



— membranaceus, 265. 



— vulgaris, 201, 252, 

 265. 



Oigopsida, 235. 

 Oikopleura, 356. 

 Ommastrephes, 236, 267, 



287, 291-293, 308. 

 Onchidium, 66, 101, 104, 



111, 129, 133, 174-176, 



329. 

 Onychoteuthidae, 235. 

 Onychoteuthis, 292. 

 Opisthobranchia, 100, 



158. 

 Orthoceratidae, 288. 

 Ostracum. 288. 



Ostrea, 22-38, 45-49, 66, 



71, 80, 82, 115, 316. 



- edulis, 23, 28, 33, 60. 



— virginiana, 22, 25, 60. 



Oxygyrus, 100. 102, 157. 



Paludiua, 100, 106, 114, 

 121, 122, 129, 134-142, 

 148, 149, 151, 153, 163, 

 191-199, 202, 211-221, 

 318. 



— vivipara, 105, 137, 

 139, 212-214, 219. 



Patella, 4, 91, 99, 101, 

 106, 113-132, 141, 147, 

 148, 180, 188, 214, 318. 



— rota, 198. 



Pecten, 22, 24, 49, 61, 

 70-76, 82. 



— eyes of, 64-66. 

 Pedicellina, 376. 

 Pegea bicaudata, 418. 



— scutigera - confoede- 

 rata, 446, 495. 



Peripatus, 80, 317. 

 Perophora, 379, 445, 456, 

 463, 465. 



— Listeri, 379, 380. 

 Pballusia, 346, 357, 360, 



366, 372. 



— mammillata, 335, 343, 

 355, 356, 358, 373, 376. 



— scabroides, 377, 378. 

 Philine, 100, 145, 164. 

 Philonexis, 235, 237. 

 Pholas, 45, 70. 

 Phragmocone, 288. 

 Phragmophora, 235. 

 Phyllidia, 330. 

 Phyllirhoe, 164. 

 Physa, 119. 

 Pilidium larva, 322. 

 Pinna, 82. 

 Pinnoctopus, 265. 

 Pisidium, 23-26, 29, 30, 



39, 46, 47, 68, 73. 

 Planorbis, 101, 107, 109- 



114, 117,118, 129, 141, 



148, 149, 177-183, 204. 

 Pleurobranchea, 100. 

 Pleurobranchus, 100, 



102, 164. 

 Pleuronectidae, 574. 

 Pleurotomaria, 99, 147, 



188. 

 Pneumoderma, 101, 167- 



172. 

 Polycera, 100, 164. 



Polyclinidae, 335, 449, 

 452-455, 470. 

 i Prodissoconch, 61. 

 j Proneomenia, 1, 15, 19. 



— aglaopheniae, 325. 

 Prosobranchia, 99. 102, 



148. 

 Protobranchia, 22. 

 Pseudolamellibiaiichia, 



22. 

 Pteropoda, 100, 102, 166, 



173. 

 Pterotrachea, 100, 102, 



111, 154-158. 

 Pulmonata, 101, 174, 



187. 

 Pupa, 105. 

 Purpura, 100, 113, 115. 



— floridana, 102. 



— lapillus, 103. 

 Pyramidellidae, 330. 

 Pyrosoma, 334, 356, 367, 



377, 381, 389-414, 420, 

 432, 451,455, 459,479, 

 484-500, 503, 508, 512- 

 520. 



R. 



Rossia, 236. 

 Rostellaria, 100, 157. 

 Runcina, 100. 



Saccoglossa, 163. 

 Sagitta, 542. 

 Salpa, 334, 336, 381, 414- 

 448, 494-518. 



— affinis, 495. 



— africana - maxima, 

 417, 433, 435, 440, 442, 

 445. 



— bicaudata, 417-419, 

 448. 



— costata-Tilesii, 417, 

 495. 



— democratica - mucro- 

 nata, 415, 420-446,495, 

 496, 511, 513. 



— dolicbosoma - virgula, 

 416, 495. 



— bexagona, 417, 446. 



- pinnata, 416-420, 423, 

 433, 435-448, 495, 507. 



— punctata, 417, 420, 

 433. 435, 445. 



— runcinata-fusiformis, 

 433, 435, 442, 445, 507. 



— scutigera - confoede- 

 rata, 446, 495. 



