PISCES. 



235 



LiSTRACANTHUs, Newberry AWorthen, 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.] 

 Lophodm, Newberry & Worthen, 1870, Geo. 



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

 occupied by Eomanowsky in 1864. 

 variabilis, see Agassizodus variabilis. 

 MACHiERACANTHUs, 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.] 

 Macropetalichthys, Norwood & Owen, 



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



[Ety. makros, large ; petalos, expanded 



or spread out; ichthys, 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.] 

 suUivanti, Newberry, 1857, (Agassichthys 



sullivanti) BuU.Nat.Inst., Corniferous 



Gr. [Ety. proper name.] 

 Mareacanthds, St. John & Worthen, 1875, 



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



spade ; akaniha, a spine. ] 

 rectus, Newberry & Worthen, 1866, (Ho- 



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



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

 Mecolepis, Newberry, 1857, Proc. Acad. Nat. 



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



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.l . „ . T 



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.] 

 Onchui, Agassiz, 1837, Eecherches sur les 

 Poissons Possiles. [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.'} 

 Okacanthus, Agassiz, 1837, Eecherches sur 

 les Poissons Fossiles. [Ety. oraios, 

 beautiful ; akaniha, 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.] 



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

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

 [Sig. oblique.] 



pnigeus, Newberrv & Worthen, 1866, Geo. 

 Sur. 111., vol" 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. Oarb. 

 [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, Eecherches 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. 



