382 WELLBURN : FISH FAUNA OF LOWER CARBONIFEROUS ROCKS. 
P. fsittacimis (M'Coy), Morris and Roberts, Quart. Jour. 
Geol. Soc, vol. xviii.. p. 101 (name only). Davis, Rep. 
Brit. Assoc., p. 645. 
Tooth : York Mus. 
Form and Loc: Carbonif. limestones, Wensleydale. 
P. acutus ? Davis. Trans. Roy. Dublin Soc., vol. i., p. 809, 
1883. 
Syn.: Chromatodvs acuta Davis, I.e., ]). 809. 
Tooth : York Mus. 
Form and Loc: Carbonif. limestones, Wensleydale. 
Genus Ctenoptychius Agassiz, Pois Foss., vol. iii., p. 99. 
Syn.: Petalodopsis Davis, I.e., p. 49S. 
C. lohatus (Etheridge), A. S. Woodward, I.e., p. 51, 
Syn.: Ctenopetalodus crefiatus Davis, I.e., p. 513. 
Teeth : York and Brit. Mus. 
Form and Loc: Carbonif. limestones. Wensleydale. 
C. tripartitus (Davis), A. S. Woodward, I.e., p. 54. 
Syn.: Petalodopsis tripartitus Davis, I.e., p. 499. 
Teeth : York Mus. 
Form and Loc: Carbonif. limestones, Wensleydale. 
Genus Polyrhizodus M'Coy, Ann. Mag. Xat. Hist., vol. ii., 
p. 125, 1848. 
P. colei Da\is. I.e. p. 502. 
Teeth : York and Brit. Mus. 
Form and Loc: Carbonif. Hmestones, Wensleydale. 
Family Pristodontid.e. • 
Genus Pristodus Davis (ex Agassiz MS.), I.e.. p. 519. 
P. falcatus Davis, I.e., p. 519. 
Teeth : York and Brit. Mus. 
Form and Loc: Carbonif. limestones, Wensleydale and 
Richmond. 
P. concinnus (Davis), R. H. Traquair, Geol. Mag., vol. v., 
p. 102, 1888. 
Syn.: Pristidadodus concinnus Da\1s, I.e., p. 585. 
Teeth : Brit. Mus. and Author's col. 
Form and Loc: Carbonif. limestones, Richmond. 
