Iinlt'.r nf 



'AGE 



230 



257 



101 



322 

 465 

 176 

 176 

 253 

 118 

 118 

 189 

 233 

 281 

 189 



33 

 367 



29 

 473 



Laimodonta, Nuttall 

 Lanistes, Montfort ... 



LediiiiLvla, Bgt 



Lepidosiren, Owen ... 



Leptoceplmlus 



Leucofldla, Alb. 

 Leucochiloides. Pfr. 



Ligatella, Mart 



Limacella, Brard 



Limax, Lin 



Limicolaria, Scluim. 



Limnaea, Lam 



Limosina, Cless 



Livinhacia, Crosse ... 



Lobotes, Cuv 



Luciobafbus, Heck. ... 



Lutianus, Bloch 



Lycocyprinus, Peters 



M. 



Macrocycloides, Mart 89 



Mdcroogana, Pilsb 149 



Macropteronotus, Lacep i:is 



Maizania, Bgt 250 



Marcxisenius, Cuv. & Val 327 



Marinula, King 230 



Marsupiobdella, Godd. & Mai. .. 3o9 



Martensia, Semper 101 



Mastacembelus, Blgr 549 



Meladomus, Swainson 257 



Melampus, Monti' 22( 1 



Melania, Lam 262 



Melanopsis, Fer 287 



Mesembrinits, Albers 165 



Mesites, Geoff 47o 



Metachatina, Pilsb 188 



Micralestes, Blgr 342 



Microdon, Meig 282 



Microkerkus, G. Aust Ill 



Microstele, Bttg 178 



Milax, Gray 120 



Monacanthus, Cuv -is 



Mormyrops, Mull 323 



Mormyrus, Linn 331 



Mugil, Arted 42 



Muraenesox, McCall 52 



Muraena, Arted. ... 52 



Mutela, Scop .... 276 



N. 



Nil ni n a , Gray 105, 282, 283 



Natalia, G. Aust 250 



Natalina, Pilsb. 89 



Neobola, Blgr. . 436 



Nerita, Lin 255,264 



Neritina, Lam 27O 



\ntlnli-ti-ifi. Conrad 27l' 



PA E 



0. 



Obeliscus, Beck 215 



Oncaea, Gistel 190 



Onchidella, Gray 225 



Onchidium, Buch 224 



Oopelta, Morch 124 



Opeas, Albers 211 



Ophthalmotil'Hiiii, Pllgr 477 



Opsaridium, Peters 432 



Oreochromis, Giintli 477 



Otala, Schum . 160 



Oxy giants, Vincig 454 



Osayrhynchus, Leach ','<-' '. 



P. 



Pachnodus, Albers 1(14 



Pagrus, Cuv 35 



Paludestrina, Orb 265 



Paludina, Lam 260 



Paludomus, Swains. 201 



Pantodon, Peters 332 



Paracara, Bleek 517 



Parachatina, Bourg 190 



Paramarion, Fischer 123 



Paratilapia, Blgr 513-517 



Patula, Held ..." 98 



Pedipes, Per 230 



Pella,A.lb 133 



Pelmatochromis, Steindr. 535 



Pelotroplius, Giinth 432 



Peltatus, G. Aust 104 



Peronia, Blainville 224 



Petrocephalus, Marcusen 324 



Petrochromis, Blgr 511 



Phasis, Alb 129 



Phortion, Preston 129 



Physa,Drap 243 



Physopsis, Krs i'49 



Phytia, Gray 232 



Pinielodus, Giintli 557 



Pintoa, Hgt 190 



Pisidium, Pfr 281 



Pisum, Gray 280-281 



Planorbis, Geoffr 235 



Platycephalus, Bl. Schn 36 



Platystacus, Bloch 448 



Plesiops, Cuv 37 



Plotosus, Lacep 448 



Polita, Held 112 



Polygyra, Say 131 



Pomatia, Leach 160 



Prot omelus, Hogg 321 



I'rotopterus, Owen 321 



Pseudarius, Bleek 456 



Pseudobarbus, Smith 367 



Pteroplatea, Mull. & Henl. ...... 56 



I'ti/i-hochromis, Steindr 477 



