CCELACANTHID-E. 
405 
37956. Crushed specimen showing part of the terminal caudal fin ; 
Airdrie, Lanarkshire. Purchased, 1863. 
21464. Small individual in counterpart; Carluke. 
Purchased, 1847. 
41197. Fragmentary remains of small individual; Low Main Seam, 
Xewsham, Hewcastle-upcn-Tyne. Purchased, 1868. 
21952. Detached head, much crushed, inferior aspect; Carluke. 
Purchased , 1847. 
P. 751. Pterygo-suspensorium ; Lowmoor, Yorkshire. Egerton Coll 
P. 3333. Pterygo-suspensorium ; Lowmoor. Enniskill&h Coll . 
The following specimens are regarded as pertaining to an un¬ 
described species by T. M. Hall, Geol. Mag. [2] vol. iii. (1877), 
p. 410. The only differences from the typical C. elegans, however, 
seem to be due to the circumstances of fossilization :— 
P. 5379, P. 6286. Fine specimen, in counterpart, discovered by W. 
Porter,. Esq., in a bed of nodules, of the Culm-Measures, 
near Instow. One side of the split nodule is shown, of 
the natural size, in PI. XIV. fig.''2, some bones of the head 
and opercular apparatus being introduced from the opposite 
side. The pectoral fins are almost entirely wanting, and the 
ventral portion of the abdominal region is partly displaced 
by crushing. The head is also imperfectly preserved ; 
and an irregular ferruginous mass appears to indicate the 
position and extent of the air-bladder. One of the jugular 
plates (ju.) is displaced beneath the articulo-angular 
bone ( d .) and exhibits a remarkably acuminate anterior 
extremitv. There is evidence of two or three ornamented 
4 / 
cheek-plates (a?.) behind the eye ; and the impression of a 
narrow bone forms the lower boundary of the orbit. The 
triangular operculum (op.), with its fine ornamentation, 
seems to be completely preserved as an impression ; and 
there are traces behind this of the pectoral arch. The 
characters of the fins and squamation, so far as recog¬ 
nizable, are noted in the specific diagnosis. The scales 
seem to occur merely as impressions, and those of the 
flank (fig. 2 a) thus appear to be marked with extremely 
delicate convergent lines (the infilling of the fissures 
between the original ridged ornament), which meet in a 
posterior reticulation. 
Purchased, 188 <o, and presented by W. Porter, Esq., 1890. 
