﻿460 ACTINOPTEEYGII. 



Cycloptychius carbonarius, Young. 



1866. Cycloptychius carbonarius, J. Young (ex Huxley, MS.), Rep. 



Brit. Assoc. 1865, p. 319. 

 1868. Cycloptychius, Hancock & Atthey, Ann. Mag. Nat. Hist. [4] 



vol. i. p. 362. 



1873. Cycloptychius, T. P. Barkas, Coal Meas. Palseont. p. 36, fig. 140. 



1874. Cycloptychius carbonarius, R. H. Traquair, Geol. Mag. [2] vol. i. 

 p. 241, pi. xii. 



1875. Cycloptychius carbonarius, J. Ward, [Proc.J N. Staffs. Nat. Field 

 Club, p. 240. 



1875. Cycloptychius, W. J. Barkas, Monthly Rev. Dental Surgery, 



vol. iii. p. 500, figs, lxviii.-lxx. 

 1890. Cycloptychius carbonarius, J. Ward, Trans. N. Staffs. Inst. 



Mining Engineers, vol. x. p. 179, pi. iv. figs. 3-5. 



Type. Imperfect fishes ; collection of J. Ward, Esq., Longton. 



The type species, attaining a maximum length of about 0*17. 

 Trunk very slightly tapering to the dorsal and anal fins, more 

 rapidly contracted beyond; dorsal margin not arched. Head and 

 opercular apparatus occupying about one-fifth of the total length ; 

 cranial roof-bones rugose and tuberculated, the facial and opercular 

 bones with irregular, more or less concentric and parallel striations. 

 Dorsal and anal fins equal and opposite, as high as long, arising at 

 somewhat less than three-fifths of the total length from the extre- 

 mity of the snout ; pelvic fins arising midway between the pectorals 

 and the anal. All the scales ornamented with sharp ridges parallel 

 with the anterior, inferior, and posterior borders ; principal scales 

 of flank not more than one and a half times as deep as broad, the 

 postero-inferior angle slightly rounded. 



Form. Sf Log. Coal-Measures: North Staffordshire and North- 

 umberland. 



P. 5175-6. Two individuals 0-12 and 0-11 in length, the first being 

 in counterpart and wanting the pectoral fins, the second 

 showing only a trace of these fins ; Deep-mine Ironstone 

 Shale, Longton, N. Staffordshire. Purchased, 1885. 



P. 1011. More imperfectly preserved individual ; Deep-mine Iron- 

 stone Shale, Longton. Egerton Coll. 



P. 1011 a. Imperfect trunk displaying the squamation ; Bassey- 

 mine Ironstone Shale, Longton. Egerton Coll. 



P. 3447. Well-preserved fish, wanting the pectoral and caudal fins, 

 counterpart of specimen figured in the Geol. Mag. [2] 

 vol. i. pi. xii. fig. 1 ; Deep-mine Ironstone Shale, Longton. 



Ennishillen Coll 



