﻿104 lrUTHYODORTJLITES. 



Ctaiacantlw.s marslii, J. S. Newberry, Eep. Geol. Surv. Ohio, 

 vol. i. pt. ii. p. 326, pi. xxxvi. fig. 3. — Coal-Measures; Ohio. 

 Ctenacanthus maiji, Newberry & Worthen, Pal. Illinois, vol. iv. 

 (1870), p. 372, pi. ii. fig. 2. — Lower Carboniferous Lime- 

 stone ; Iowa. 



Ctenacanthus pellensis, St. John & Worthen, Pal. Illinois, vol. vii. 

 p. 237, pi. xxi. fig. 2. — St. Louis Limestone ; Iowa. 



Ctenacanthus plicatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 

 vol. i. (1883), p. 342, pi. xlv. fig. 4 : Onchus plicatus, 

 L. Agassiz, Poiss. Foss. vol. iii. (1843), p. 177 (name 

 only). — Lower Carboniferous Limestone ; Armagh. [Mus. 

 Geol. Soc., London.] 



Ctenacanihus pugiunculus, St. John & Worthen, op. cit. vol. vi. 

 p. 430, pi. xxi. fig. 9. — St. Louis Limestone ; Missouri. 



Ctenacanthus randalli, J. S. Newberry, Palseoz. Fishes N. America 

 (Mon. U.S. Geol. Surv. no. xvi. 1889), p. 105.— Chemung 

 Group (Olean Conglomerate) ; Warren, Pa. 



Ctenacanthus rectus, J. W. Davis, loc. cit. vol. i. p. 345, pi. xlv. 

 fig. 5 : Onchus rectus, L. Agassiz, Poiss. Foss. vol. iii. 

 (1843), p. 177 (name only). — Lower Carboniferous Lime- 

 stone ; Armagh. [Mus. Geol. Soc. London.] 



Ctenacanthus sculptus, St. John & Worthen, op. cit. vol. vi. p. 421, 

 pi. xiv. fig. 1. — Kinderhook Limestone ; Iowa. 



Ctenacanthus similis, St. John & Worthen, op. cit. vol. vi. p. 431, 

 pi. xv. fig. 11. — Chester Limestone; Illinois. 



Ctenacanthus speciosus, St. John & Worthen, op. cit. vol. vi. p. 424, 

 pi. xiv. figs. 3, 4. — Kinderhook Limestone ; Iowa. 



Ctenacanthus sp>ectabilis, St. John & Worthen, op. cit. vol. vi. 

 p. 420, pi. xv. fig. 1. — Kinderhook Limestone ; Iowa. 



Ctenacanthus triangularis, J. S. Newberry, Eep. Geol. Surv. Ohio, 

 vol. i. (1873), pt. i. p. 329, pi. xxxvi. fig. 1.— Waverly 

 Group ; Pennsylvania. (?) Carboniferous Limestone ; 

 Mjatschkowa, Moscow (H. Trautschold, Nouv. Mem. Soc. 

 Imp. Nat. Moscou, vol. xiv. 1879, p. 61, pi. vi. fig. 15). 



Ctenacanthus varians, St. John & Worthen, op. cit. vol. vi. p. 422, 

 pi. xiv. fig. 2. — Kinderhook Limestone ; Iowa. 



Ctenacanthus vetustus, J. S. Newberry, op. cit. vol. i. pt. i. p. 326, 

 pi. xxxv. fig. 3. — Huron Shale ; Ohio. [Columbia College, 

 New York.] 



Ctenacanthus wrighti, J. S. Newberry, Thirty-fifth Rep. New 

 York State Mus. (1884), p. 206, pi. xvi. figs. 12-14, and 

 Palseoz. Fishes N. America (Mon. U.S. Geol. Surv. no. xvi. 

 1889), p. 66, pi. xxvi. fig. 4. — Hamilton Group (Upper 

 Devonian) ; Kashong Creek, New York. [Columbia College.] 



