PISCES. 



Listracanthus, Newberry & Worthen, 1870. 



Geo. Sur. 111., vol. 4. [Ety. listron, a 



shovel ; akantha, a spine.] 

 hildrethi, Newberry, 1875, Ohio Pal., vol. 



2, Coal Meas. [Ety. proper name.] 

 hystrix, Newberry & Worthen, 1870, Geo. 



Sur. 111., vol. 4, Burlington Gr. [Sig. 



covered or beset with spines.] 

 Lopliodm, Newberry & Worthen, 1870, Geo. 



Sur. 111., vol. 4. This name was pre- 

 occupied by Romanowsky in 1864. 

 variabilis, see Agassizodus variabilis. 

 Mach^racanthus, Newberry, 1853, Annals 



of Science, vol. 1, and 1857, Bull. Nat. 



Inst. [Ety. machaira, a sabre ; akan- 

 tha, a spine.] 

 major, Newberry, 1857, Bull. Nat. Inst., 



Corniferous Gr. [Sig. greater.] 

 peracutus, Newberry, 1857, Bull. Nat. 



Inst., Corniferous Gr. [Sig. very 



sharp-pointed.] 

 sulcatus, Newberry, 1857, Bull. Nat. Inst., 



Corniferous Gr. [Sig. furrowed.] 

 Macropktalichthys, Norwood & Owen, 



1846, Am. Jour. Sci., 2d ser., vol. 1. 



[Ety. makros, large ; petalos, expanded 



or spread out ; icMhys, a fish.] 

 manni, Newberry, 1853, (Agassichthys 



manni) Annals of Science, vol. 1, and 



1857, Bull. Nat. Inst., Corniferous Gr. 



[Ety. proper name.] 

 rapheidolabis, Norwood & Owen, 1846, 



Am. Jour. Sci., 2d ser., vol. 1, Up. 



Held. Gr. [Ety. raphis, a needle ; 



eidos, form ; labis, forceps.] 

 sullivanti, Newberry, 1857, (Agassichthys 



sullivanti) Bull.Nat. Inst., Corniferous 



Gr. [Ety. proper name.] 

 Marracanthus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6. [Ety. marron, a 



spade ; akantha, a spine. ] 

 rectus, Newberry & Worthen, 1866, (Ho- 



macanthus (?) rectus) Geo. Sur. 111., 



vol. 2, St. Louis Gr. [Sig. straight.] 

 Mkcolepis, Newberry, 1857, Proc. Acad. Nat. 



Sci., vol. 8. [Ety. mekos, large ; lepis, 



a scale.] 

 corrugata, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



wrinkled.] 

 granulata, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



granulated.] 

 insculpta, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. en- 

 graved.] 

 lineata, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



lined.] 

 ornatissima, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



highly ornamented.] 

 ovoidea, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



ovoidal.] 

 serrata, Newberry, 1857, Proc. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. 



serrated.] 



tuberculata, Newberry, 1857, Proc. Acad. 

 Nat. Sci., vol. 8, Coal Meas. [Sig. 

 tuberculated.] 

 Mesodmodus, St. John & Worthen, 1875, 

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

 something between; odous, a tooth.] 



explanatus, St. John & Worthen, 1875, 

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

 [Sig. spread out.] 



exculptus, St. John & Worthen, 1875, 

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

 [Sig. deeply sculptured.] 



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

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

 ornamented.] 

 Onchus, Agassiz, 1837, Recherches sur les 

 Poissons Fossiles. [Ety. onchos, bent 

 or hooked like a talon or arrow-barb.] 



deweyi, see Ceratiocaris deweyi. 

 Onychodus, Newberry, 1853, Annals of Sci- 

 ence, vol. 1, and 1857, Bull. Nat. Inst. 

 [Ety. onyx, a claw ; odous, tooth.] 



hopkinsi, Newberry, 1853, Annals of Sci- 

 ence, vol. 1, and 1857, Bull. Nat. Inst., 

 Corniferous Gr. [Ety. proper name.] 



sigmoides, Newberry, 1853,Annals of Sci- 

 ence, vol. 1, and 1857, Bull. Nat. Inst., 

 Corniferous Gr. [Sig. like the letter 

 Sigma.} 

 Oracanthus, Agassiz, 1837, Recherches sur 

 les Poissons Fossiles. [Ety. oraios, 

 beautiful; akantha, spine.] 



abbreviatus, Newberry, 1853, Annals of 

 Science, vol. 1, Corniferous Gr. [Sig. 

 abbreviated.] 



consimilis, St. John & Worthen, 1875, 

 Geo. Sur. 111., vol. 6, St. Louis Gr. 

 [Sig. wholly similar.] 



(?) obliquus, St. John & Worthen, 1875, 

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

 [Sig. oblique.] 



pnigeus, Newberrv & Worthen, 1866, Geo. 

 Sur. 111., voh 2, Keokuk Gr. This 

 species is made the type of the genus 

 Pnigeacanthus, see P. deltoides. 



vetustus, Leidy, 1856, Jour. Acad. Nat. 

 Sci. Phil., 2d ser., vol. 3, Low. Carb. 

 [Sig. ancient.] 



fragilis, Newberry, 1853, Annals of Sci- 

 ence, vol. 1, Corniferous Gr. [Sig. 

 frail, easily broken.] 



granulatus, Newberry, 1853, Annals of 

 Science, vol. 1, Corniferous Gr. [Sig. 

 granulated.] 



multiseriatus, Newberry, 1853, Annals of 

 Sci., vol. 1, Corniferous Gr. [Sig. in 

 many series.] 

 Orodus, Agassiz, 1838, Recherches sur les 

 Poissons Fossiles. [Ety. oraios, beau- 

 tiful; odous, tooth.] 



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

 Sur. 111., vol. 6, Coal Meas. [Ety. 

 proper name.] 



carinatus, St. John & Worthen, 1875, 

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

 [Sig. keeled.] 



corrugatus, see Agassizodus corrugatus. 



