SUB-KINGDOM VERTEBRATA. 



First Class, 

 Second Class, 



PISCES. 

 EEPTILIA. 



CLASS PISCES. 



ORDER GANOIDEI. — Acanthaspis, Acantholepis, Acrolepis, Amblypterus, Anaclitacan- 

 thus, Aspidichthys, Asterosteus, Catopterus, Cephalaspis, Coceosteus, Ccfilacanthus, 

 Conchodus, Ctenodiis, Cyrtacanthus, Dinichthys, Dipterus, Eurylepis, Heliodus, 

 Holoptychius, Liognathus, Macropetaliclithys, Mecolepis, Onychodus, -Palseoniscus, 

 Peplorhina, Platysomus, Pterichthys, Pygopterus, Rhizodus, Rhynchodus. 



ORDER SELACHII. — Acondylacanthus, Agassizodus, Amacanthus, Antliodus, Apedodus, 

 Aspidodus, Asteropt}'chius, Batacanthus, Bathyclieilodus, Bythiacanthus, Calopo- 

 dus, Carchavopsis, Cheirodus, Cholodus, Chomatodus, Cladodus, Olimaxodus, 

 Cochliodus, Compsacanthus, Ctenacanthus, Otenopetalus, Ctenoptyehius, Cymato- 

 dus, Dactylodus, Deltodus, Desmiodus, Diplodus, Drepanacanthus, Edestes, Erismar 

 canthus, Fissodus, Gampsacanthus, Geisacanthus, Glymmatacanthus, Gyracanthus, 

 Harpacodus, Helodus, Hybooladodus, Lambdodus, Lecracanthus, Leiodus, Lepto- 

 phractus, Lisgodus, Listracanthus, Machaeracanthus, Marracanthus, Mesodmodus, 

 Oracanthus, Orodus, Orthacanthus, Peltodus, Periplectrodus, Peripristis, Petalodus, 

 Petalorhynchus, Petrodus, Pbcebodus, Physonemus, Platyodus, Pleuracanthus, 

 Pnigeacanthus, Poecilodus, Polyrhizodus, Pristicladodus, Pristodus, Psammodus, 

 Psephodus, Ptyctodus, Sandalodus, Stemmatodus, Stenacanthus, Tanaodus, Thrina- 

 codus, Trigonodus, Venustodus, Xystracanthus, Xystrodus. 



Acanthaspis, Newberry, 1875, Ohio Pal., vol. 



2. [Ety. akantha, spine ; aspis, a shield.] 

 armata, Newberry, 1875, Ohio Pal., vol. 



2, Corniferous Gr. [Sig. armed.] 

 Acantholepis, Newberry, 1875, Ohio Pal., 



vol. 2. [Ety. akantha, a spine ; lepis, 



a scale.] 

 pustulosa, Newberry, 1875, Ohio Pal., 



vol. 2, Corniferous Gr. [Sig. covered 



with pustules.] 

 Acondylacanthus, St. John & Worthen, 



1875, Geo. Sur. 111., vol. 6. [Ety. 



akondylos, without bony knobs; 



akantha, a spine.] 

 sequicostatus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Keokuk Gr. 



[Sig. equal ribbed.] 



gracilis, St. John & Worthen, 1875, Geo. 



Sur. 111., vol. 6, Kinderhook Gr. [Sig. 



slender.] 

 occidentalis, Newberry & Worthen, 1866, 



(Leptacanthus occidentalis) Geo. Sur. 



111., vol. 2, St. Louis Gr. [Sig. western.] 



AoKOLEPis, Agassiz, 1843, Recherches Poiss. 

 Foss. [Ety. akros, sharp ; I^iis, a ■ 

 scale.] 

 hortonensis, Dawson, 1868, Acad. Geol., 

 Carboniferous. [Ety. proper name.] 



Agassichthys, syn. for Macropetalichthys. 

 manni, see Macropetalichthys manni. 

 mllivanti, see Macropetalichthys sulli- 

 vanti. 



