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COCCOSTEID .E. & 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, but none are 
represented in the Collection. The following have been described :— 
cr ?<y\ a £ 'AC 
Dinichthys corrugatus, J. S. Newberry, Palaeoz. Pishes N. America ^ 
(Mon. U.S. Geol. Surv. no. xvi. 1889), p. 151, pi. vii. fig. 3. ^Axi/v//^ 
—Cleveland Shale (Lower Carboniferous); Lorain Co., 
Ohio. [Anterior portion of mandible; Columbia College^/^ *7'* d - 
New lork.J _ " / - 
Dinichthys curtus, J. S. Newberry, Trans. New York Acad. Sci *^TlG7~> 
vol. vii. (1888), p. 179, and op. cit. (1889), p. 156, pi. '/s 
xlviii. fig. 3, pi. liii. figs. 1-3.—Erie and Cleveland JsJ 
Shales; Ohio and Pennsylvania. [Head, Ac. ; Columbia ;c \ ~°1' \ 
n u n X e. rreytuOffh 
College.] __ />.lsT. y, 
Dinichthys ? eifelensis, E. Kayser, Zeitschr. deutsch. geol. Ges. vol. f ^ tijr-f.6. 
= fyiervu t. xxxii. (1880), p. 818.—Devonian (“ Crinoidenschicht ”) ; 
Gerolstein, Eifel. [Mandibular ramus and fragmentary 
'7 ? plates ; Geol. Surv. Museum, Berlin.] 
' n * Dinichthys intermedins , J. S. Newberry, op. ciA (1889) p. 152, pi. x. 
figs. 1, 2, pi. xlvii. figs. 1-4, pis. li., lii.—Cleveland Shale ; 
Cuyahoga and Lorain Cos., Ohio. [Head, Ac.; Columbia . 
College., r-Qrrr}/FS~ 
Dinichthys goulcli , J. S. Newberry, op. ct<. p. 150, pi. ix. —Cleve- rs. 
land Shale; Rocky River, near Berea, Ohio. [Head, Ac.; 
A 
Columbia College.] ^ ccrmj*/*** 'ts,*/** - 
Dinichthys hertzeri , J. S. Newberry, Rep. Geol. Surv. Ohio, vol. i. 
pt. ii. (1873), p. 316, pis. xxx., xxxi., and op. cut. (1889), 
p. 64, pi. xxxii. fig. 2.—Huron Shale (Upper Devonian): 
Delaware, Ohio. [The type species, founded upon the 
head, with jaws, Ac.; 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 , J. 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.] 
J3/ A 
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