PISCES. 



Stemmatodus, St. John & Worthen, 1875, 



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



a wreath ; odous, a tooth.] 

 bicristatus, St. John & Worthen, 1875, 



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



[Sig. double-peaked.] 

 bifurcatus, St. John & Worthen, 1875, 



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



[Sig. forked.] 

 cheiriformis, St. John & Worthen, 1875, 



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



[Sig. like a hand.] 

 compactus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Chester Gr. [Sig. 



compact.] 

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



Sur. 111., vol. 6, Keokuk Gr. [Ety. 



proper name.] 

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



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



simple.] 

 symmetricus, St. John & Worthen, 1875, 



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



[Sig. symmetrical.] 

 Stenacanthus, Leidy, 1857, Proc. Acad. 



Nat. Sci., vol. 8. [Ety. stems, nar- 

 row; akantha, a spine.] 

 nitidus, Leidy, 1857, Proc. Acad. Nat. 



Sci., vol. 8, Devonian. [Sig. neat, 



smooth.] 

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



Sur. 111., vol. 6. [Ety. tanaos, long; 



odous, a tooth.] 

 angularis, Newberry & Worthen, 1866, 



(Chomatodus angularis) Geo. Sur. III., 



vol. 2, Coal Meas. [Sig. angulated.] 

 bellicinctus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Chester Gr. [Sig. 



beautifully banded.] 

 depressus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Chester Gr. [Sig. 



depressed.] 

 gracillimus, Newberry & Worthen, 1866, 



(Chomatodus gracillimus) Geo. Sur. 



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



slender.] 

 grossiplicatus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Chester Gr. [Sig. 



thick-folded.] 

 multiplicatus, Newberry & Worthen, 



1866, (Chomatodus multiplicatus) Geo. 



Sur. 111., vol. 2, Burlington Gr. [Sig. 



many folded.] 

 obscurus, Leidy, 1856, (Chomatodus ob- 



scurus) Trans. Am. Phil. Soc, vol. 11, 



Keokuk Gr. [Sig. obscure.] 

 polymorphus, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Chester Gr. [Sig. 



many formed.] 

 praenuntius, St. John & Worthen, 1875, 



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



[Sig. forboding.] 

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



Sur. 111., vol. 6, St. Louis Gr. [Sig. a 



dwarf.] 

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



Sur. 111., vol. 6, St. Louis Gr. [Sig. 



engraved, sculptured.] 



sublunatus, St. John & Worthen, 1875, 



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



[Sig. somewhat lunate.] 

 Thbinacodus, St. John & Worthen, 1875, 



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



three-pronged ; odous, a tooth.] 

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



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



dwarfish.] 

 duplicatus, Newberry & Worthen, 1866, 



(Diplodus duplicatus) Geo. Sur. 111., 



vol. 2, Keokuk Gr. [Sig. folded in 



two.] 

 incurvus, Newberry & Worthen, 1866, 



(Diplodus incurvus) Geo. Sur. 111., 



vol. 2, Keokuk Gr. [Sig. incurved.] 

 Tbigonodus, Newberry & Worthen, 1866, 



Geo. Sur. 111., vol. 2. [Ety. trigonos, 



three-cornered ; odous, tooth.] 

 major, Newberry & Worthen, 1866, Geo. 



Sur. 111., vol. 2, Burlington Gr. [Sig. 



large.] 

 minor, Newberry & Worthen, 1866, Geo. 



Sur. 111., vol. 2, Keokuk Gr. [Sig. 



small.] 

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



Sur. 111., vol. 6. [Ety. venustus, beau- 

 tiful ; odous, tooth.] 

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



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



pretty.] 

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



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



name is a syn. for V. venustus. 

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



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



robust.] 

 tenuicristatus, St. John & Worthen, 1875, 



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



slender-peaked.] 

 variabilis, St. John & Worthen, 1875, 



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



[Sig. variable.] 

 venustus, Leidy, 1856, (Chomatodus ve- 

 nustus) Trans.Am. Phil. Soc. Phil., vol. 



11, St. Louis Gr. [Sig. beautiful.] 

 Xystkacanthus, Leidy, 1859, Proc. Acad. 



Nat. Sci. Phil. [Ety. xystra, a tool 



for scraping; akantha, a spine.] 

 acinaciformis, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Coal Meas. [Sig. 



scimitar-shaped.] 

 anceps, Newberry & Worthen, 1866, 



(Drepanacanthus anceps) Geo. Sur. 



111., vol. 2, Coal Meas. [Sig. doubtful.] 

 arcuatus, Leidy, 1859, Proc. Acad. Nat. 



Sci. Phil., Up. Coal Meas. [Sig. bent, 



bow-shaped.] 

 mirabilis, St. John & Worthen, 1875, 



Geo. Sur. 111., vol. 6, Coal Meas. [Sig. 



wonderful.] 

 Xystrodus, Agassiz. [Ety. xystra, an instru- 

 ment for scraping ; odous, tooth.] 

 occidentalis, St. John, Coal Meas. [Sig. 



western.] ■ - 



