XII CONTENTS. 



Order IV. Physostomi or Malacopteri Continued. 



Gila 284 



1. Gila robusta . 285 



2. Gila elegans 286 



3. Gila gracilis _ 287 



Tigoma 288 



1. Tigoma conformis. _ _ 289 



2. Tigoma bicolor . _ 289 



3. Tigoma obesa _. 290 



4. Tigoma humboldti _. 291 



5. Tigoma egregia _ 291 



6. Tigoma lineata 292 



7 Tigoma gracilis 293 



8 Tignina cr.ssa 293 



Chtonda 294 



1. Cheonda cooped 294 



- . C.ieouda co nilea 295 



Siboma _ _. 296 



1. Siboma crassieauda 29(5 



2. boma atraria 297 



Ptycliocheilus 298 



1 i tj . ocheilus oregonensis - -. 298 



2. Ptychocheilus grandis -. - 299 



3. Pty chocheilus rapax 300 



4. Ptychocheilus vorax . 301 



Clinostomus _ 302 



Family Cyprinodontidae 302 



Fundulus _ 303 



Fundulus parvipinnis 303 



Family Esocidae 304 



Family Salnionidae 304 



Salmo 305 



1. Salmo scouleri 305 



2. Salmo quinnat _ 300 



3. Salmo spectabilis 307 



Fario 308 



1. Fario aurora 308 



2. Fario tsuppitch 310 



3. Fario argyreus _ _. 312 



4. Fario gairdneri . _. - 313 



5. Fario clarkii 314 



6. Fario stellatus. 316 



Salar 318 



1. Salar lewisi - - 318 



2. Salar virgiualis . 320 



3. Salar iridea 321 



Osmerus 323 



Osmerus pretiosus 324 



Thaleichthys 325 



Thaleichthys sterensi . ... - - 325 



Coregonus 326 



Corcgonus williamsoni. - - 326 



Family Scopelidae . ... 



Saurus (Laurida) lucioceps -- 



Family Clupoidae 



