104 
ICHTHYODOBTJLITES. 
Ctenacanthus marshi , J, S. Newberry, Rep. Geol. Surv. Ohio, 
voL i. pt. ii. p. 326, pi. xxxvi. fig. 3.—Coal-Measures; Ohio. 
Ctenacanthus mayi , dewberry & Worthen, Pal. Illinois, vol. iv. 
(1870), p. 372, pi. ii. fig. 2.—Lower Carboniferous Lime¬ 
stone ; Iowa. 
Ctenacanthuspellensis, 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. xiv. fig. 4 : Qnclius plicatus, 
L. Agassiz, Poiss. Loss. vol. iii. (1843), p. 177 (name 
only).—Lower Carboniferous Limestone; Armagh. [Mus. 
Geol. Soc., London.] 
Ctenacanthus 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.^A,- 2^. 
Ctenacanthus rectus , J. W. Davis, loc. cit. vol. i. p. 345, pi. xlv. 37 
fig. 5: Onchus rectus , L. Agassiz, Poiss. Foss. vol. iii. 
(1843), p. 1/7 (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.— Kinderhoc’ Limestone; Iowa. 
Ctenacanthus similis , St. John & Worthen, op. cit. vol. vi. p. 431. 
pi. xv. fig. 11. — Chester Limestone; Illinois. 
Ctenacanthus spedosus, St. John & Worthen, op. cit. yol. yfijo. 424, 
pi. xiv. figs. 3, 4.—Kinderhook Limestone; IowaT 
Ctenacanthus spectabilis , St. John & Worthen, op. cit. vol. vi. 
p. 420, pi. xv. fig. 1.—Kinderhook Limestone ; Iowa, 
Ctenacanthus triangularis, J. S. Newberry, Rep. Geol. Surv. Ohio, 
vol. i. (1873), pt. i. p. 329, pi. xxxvi.' fig. l._AFaverly 
Group; Pennsylvania. (?) Carboniferous Limestone; 
Mjatschkowa, Moscow (H. Trautschold, Nouv. Mem. Soc! 
Imp. Nat. Moscou, vol. xiv. 1879, p. 61, pi. vi. fig. 15). 
varians ’ St - John & Worthen, op. cit. vol. vi. p. 422, 
ph xiv. fig. 2.— Kinderhook Limestone; Iowa. 
Ctenacanthus vetustus , J. S. Newberry, op. cit. vol. i. pt. i p 396 
pl * xxxv - %• Shai; ; Oliio. [Columbia College! 
A f> • Yew York.] rksU % JJ.yxvh,. -f. 
'pt-'fl'H' d ° Ctenacanthus wrighti, J. S. Newberry,'Thirty-fifth Rep. New 
" York State Mus. (1884), p. 20$, pl. xvi. figs. 12-14, and 
Palaeoz. Fishes N. America (Mon. U.S. Geol. Surv. no. xvi. 
1889), p. 66, pl. xxvi. fig. 4./—Hamilton Group (Upper 
Devonian); Kashong Creek, New York. [Columbia College.] 
