258 INDEX. 



Mediterranean! Lam. 



(Umbr.), . . .179 



Melanochlamys Cheesein., . 44 



Melanopus Crouch (Aply- 

 sia), ... 75 



Membranacea Mont. (Lam- 



ellaria), . . .215 



Membranacea Monts. (Phi- 

 line), . . . .22 



Membranaceum M e c k e 1 



(Doridium), . 45, 46 



Membranaceus Mont. (Pleu- 



robr.), . . .215 



MENESTHO, . . . 230 



Minor Lank. (Aplysia), . 225 



MONOSTICHOGLOSSATA, . 161 



Montagui Lch. (Cleantus), 194 



Monterosatoi Jeffr. (Phi- 

 line), .... 20 



Monterosatoi Vayss. (Pleu- 

 robr.), . . .196 



Montrouzieri Souv. (Hal- 



iotinella.), . . .210 



Morosa Bgh. (Koonsia), . 222 



Morosus Bgh. (Pleuro- 



branchillus), . . 223 



Mouhoti Gilch. (Aplysia), 116 



Mustelina Dav. (Aplysia), 71 



Myonia A. Ad., . - . . 230 



Nana Bgh. (Ildica), . . 174 

 Napolitana Chiaje (Aply- 

 sia), ... 73 

 NAVANAX Pils., . 43, 57 

 Navarchus Coop., . . 57 

 NEAPLYSIA Coop., . 65, 68 

 Neapolitana Chiaje (Aply- 

 sia), . . .73 

 Neda Ads., . . .228 

 Nevilli Pils. (Lobiger), . 168 

 Nexa Thomp. (Aplysia), . 71 

 Nicaraguana Pils. (Dola- 



brifera), . . .124 

 NigraChenu (Pelta), . 172 

 tfigra Mts. (Aglaja), . 47 



Nigra Orb. (Aplysia), . 85 

 Nigra Pse. (Philinopsis), . 57 

 Nigrocincta Mts. (Aplysia), 107 



Ni gromarginata Risso 



(Aplysia), . ^ . .113 

 Nigrum Mts. (Doridium), . 48 

 Nitida Jeffr. (Philine), . 18 

 Nodifera A. & R. (Aplysia), 109 

 Norfolkensis Sowb. (Aply- 

 sia), .... 99 

 NOTARCHUS Cuv., . 135, 161 



NOTASPIDEA, . . .170 



Novsezealandise Ch. (Pleu- 



robr.), . . .227 

 Nudatus Rang (Notarchus), 138 

 Nuttalli Pils. (Aglaja), . 50 



Oahouensis Soul. (Dolabri- 



fera), . . . .122 

 Obesa Ver. (Koonsia), . 222 

 OblongusAud. (Pleurobr.), 208 

 Oeellata Ad. (Aplysia), .115 

 Ocellata Fer. (Aplysia), . 188 

 Oeellata Orb. (Aplysia), . 76 

 Ocellatus Chiaje ( P 1 e u - 



robr.), . ' . .195 

 Ocellatus Fer. (Notarchus), 138 

 Oce^a^Hasselt(Placobr.), 115 

 Ocelligera Bgh. (Aglaja), . 53 

 Ocelligerum Bgh. (Dorid.), 53 

 Oculifera A. & R. (Aply- 

 sia) 110 



CHivacea Pse. (Dolabrifera), 123 

 Olivacea Raf. (Oxynoe), . 162 

 Olivaceus Ehrenb. (Crypto- 



phthalmus), . . 37 



Ombrella Blv 176 



Operculatum Ads., . .176 

 Or6/ct^arzsMuhl.(Acardo), 181 

 Orbignyana Roch. (Aglaja), 239 

 Orbignyanus Roch. (Pos- 



tero.), . . . 239 



Ornata Dh. (Dolabella), . 131 

 Oruata Dh. (Petalifera), . 131 

 Ornata Dh. (Phyllaplysia), 131 

 Ornata Quatref. (Pelta), . 172 

 Ornatus Ch. (Pleurobr.), . 206 

 Ornatus Swains. ( T h a 1 - 



lepus), . . .126 

 Orientalis Ad. (Philine), . 8 

 Orientalis Sowb. (Aplysia), 104 



