460 
ACTISrOPTEEYGlI. 
Cycloptychius carbonarius, Young. 
1866. Cycloptychius carbonarius, J. Young (ex Huxley, MS.), Rep. 
Brit. Assoc. I 860 , p. 319. 
1868. Cycloptychius, Hancock & Atthey, Ann. Mag. Nat. Hist F41 
yoI. i. p. 362. L J 
18^3. Cycloptychius, T. P. Barkas, Coal Meas. Palaeont. p. 36, fig. 140. 
1874. Cycloptychius carbonarius, R. H. Traquair, Geol. Mag. [2] vol. i. 
p. 241, pi. xii. r 
1875. Cycloptychius carbonarius, J. Ward, [Proc.l 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 tj pe 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. § Log. Coal-Measures: North Staffordshire and North¬ 
umberland. /J&yu'm /°Ure» 
5175—6. Two individuals 0’12 and 0*11 in length, the first being 
in counterpart and wanting the pectoral fins, the second 
shoving 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- 
mme 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. 
Enniskillen Coll 
