Oscantus Leach. 
Ossiania Monts., ; 
Ossiani Kob., (Philine), 
Ossiansarsi Friele (Philine), 
Ovalis Cpr. (Umbr.), 
Ovalis Pse. (Pleurobr.), 
Ovata Jeftr. oe 
OXYNOEID#, 
OXYNOE Raf, 
ot 
Pacifica Pse. (Dolabrifera), 
Pacificum Bgh. ee 
pteron), . 
Panamensis Pils. (Tethy Sy. 
PaRAPLysIA Pils, . 
Parthenopia Oken., . 
Parviplica Dall (Torn.), 
Parvula Mch. (Aplysia), 
Parvus Hedl. (Pugnus), . 
Patagonicus Orb.(Pleurobr.) 
Patelloidea Cantr. (Parmo.), 
Patinaria Guppy (Haliot.), 
Patula Jeffr. (Philine), 
Patulus Risso (Seaphander), 
Peasei Pils. (Tethys), . : 
FPectinata Dillw. (Bulla), 
Pelta Quatref., lil 
Pettide.  . 
Pellucidus Ad. (Lobiger), : 
Pellucidus Pse. (Pleurobr.), 
Perforatus Ph. (Pleurobr.), 
Peronii Blv. (Dolabella), 
Peronii Cuv. (Pleurobr.), 
Perviridis Pils. (Aplysia), . 
PETALIFERA Gray, . 
Petalifera Rang (Aplysia), . 
Petersonit Gray (Aplysia), . 
Petersoni Sowb. (Aplysia), . 
PHANEROPHTHALMUs Ad., 
Philippi Krohn (Lobiger), . 
PHILINE Asc. . 
Phyline, 
? ’ 
PHILINIDA, . : vi, 
Philinopsis Pse., 44, 56, 
PuHycopuHina Ad., 2168; 
Pay vuaPrysia Fisch., 
Picta Pse. (Lobiger), 
Pictum Ad. (Operc.), 
INDEX. 259 
212 Pictum Ad. (Umbr.), 183 
2 Pictus Pse. (Lobiger), 170 
15 Piperata Smith (Aplysia) . 115 
14 Planata Dall (Philine), 24 
. 177 ~=Planciana Lam. (Bulleea) ial 
. 202 Pleti Rang (Aplysia), 148 
. 233 Pleii Rang (Notarchus), 148 
. 161 PLEUROBRANCHID®, 170, 190 
. 162 PLEUROBRANCHA Leue, 
1915, 223 
122 =Pleurobranchidium Blv., . 223 
Pleurobranchillus Bergh, . 221 
42 PLEUROBRANCHUS Cuy., . 191 
88 Placobranchus Gray, . 114 
15. Plicatulum Mts.(Umbr.) . 178 
39 = Plumula Mont. (Bulla), 194 
232 Plumula Mont. (Pleurobr.), 193 
83 Plumula Vayss. & Bergh. 
234 (Pleurobr.),  . 195 
200 = Plumulatus Loe. (Pleurobr. ), 194 
187 ‘Polaris Auriv. (Philine), 2, 
210 Poliana Chiaje (Aplisia), 70 
11 Polyomma Mch.(Notarchus) 139 
13 Porosa Leach (Berthella) . 194 
95  Posterobranchea Orb., 44 
12. = Posterobranchus Roch., 239 
239 Prasina Mch. (Pelta), 173 
. 170 Protea Rang (Aplysia), 78 
167 ~Pruinosa Clark (Philine), 26 
2038 PsEuDAPLysIA Pils., . pes) eya 
197 PrerycopHysis Fisch., 162, 169 
1538 Puanus Hedley, ; LE2Be 
207 Pulmonica Gld. (Aplysia), . 96 
81 Punctata Ad. (Bulla), 14 
128 Punctata Clark (Philine), . 17 
129 Punctata Cuv. (Aplysia) 70 
118 = =Punctata Phil. (Bulla) 13, 14 
70 Punctata Pse. (Syphonota), 95 
38  Punctatus Ph. (Notarchus), 137 
167 Punctatus Q. & G. (Pleu- 
238 TOOTS) eee 205 
2 Punctilucens Beh. (Aglaja), 54 
1 Punetilucens Beh. (Dorid.), 55 
1 Punctulata Raf. (Tylos) 36 
114 »Punctulatas T-C) “Cehyll- 
132 aplysia), . seul 
169 Purpurea Beh. (Aglaja), 52 
183. Purpureum Beh. (Dorid.) . 52 
