﻿COCCOSTFID^. 301 



no forwardly directed process. Pectoral arch represented by at least 

 one pair of short and deep, curved bones, immediately in advance of 

 the dorsal and lateral armour ; pectoral appendages with a short, 

 robust spine. [Median fins unknown.] 



This genus comprises species chiefly of gigantic size, hut none are 

 represented in the Collection. The following have been described : — 



Dinichthys corrugatus, J. S. Newberry, Palaooz. Fishes N. America 

 (Hon. U.S. Geol. Surv. no. xvi. 1889), p. 151, pi. vii. fig. 3. 

 — Cleveland Shale (Lower Carboniferous) ; Lorain Co., 

 Ohio. [Anterior portion of mandible j Columbia College, 

 New York.] 



Dinichthys curtus, J. S. Newberry, Trans. New York Acad. Sci. 

 vol. vii. (1888), p. 179, and op. cit. (1889), p. 156, pi. 

 xlviii. fig. 3, pi. liii. figs. 1-3. — Erie and Cleveland 

 Shales ; Ohio and Pennsylvania. [Head, &c. ; Columbia 

 College.] 



Dinichthys ? eifelensis, E. Kayser, Zeitschr. deutsch. geol. Ges. vol. 

 xxxii. (1880), p. 818. — Devonian (" Crinoidenschicht ") ; 

 Gerolstein, Eifel. [Mandibular ramus and fragmentary 

 plates ; Geol. Surv. Museum, Berlin.] 



Dinichthys intermedins, J. S. Newberry, op. cit. (1889) p. 152, pi. x. 

 figs. 1, 2, pi. xlvii. figs. 1-4, pis. li., lii. — Cleveland Shale ; 

 Cuyahoga and Lorain Cos., Ohio. [Head, &c. ; Columbia 

 College.] 



Dinichthys gouldi, J. S. Newberry, op. cit. p. 150, pi. ix. — Cleve- 

 land Shale ; Rocky River, nearBerea, Ohio. [Head, &c. ; 

 Columbia College.] 



Dinichthys hertzeri, J. S. Newberry, Rep. Geol. Surv. Ohio, vol. i. 

 pt. ii. (1873), p. 316, pis. xxx., xxxi., and op. cit. (1889), 

 p. 64, pi. xxxii. fig. 2. — Huron Shale (Upper Devonian) ; 

 Delaware, Ohio. [The type species, founded upon the 

 head, with jaws, &c. ; Columbia College (in part).] 



Dinichthys minor, J. S. Newberry, Ann. New York Acad. Sci. 

 vol. i. (1878), p. 191, and op. cit. (1889), p. 149, pi. viii. 

 figs. 1-8. — Cleveland Shale, Lorain Co., Ohio. [Dorsal 

 shield, median occipital, and portions of jaws ; Columbia 

 College.] 



Dinichthys newberryi, 0. M. Clarke, Bull. U. S. Geol. Surv. no. 16 

 (1885), p. 17, pi. i. fig. 1 .—Hamilton Shale (Upper Devo- 

 nian) ; W. New York. [Mandibular ramus ; National 

 Museum, Washington.] 



