﻿PALJEONISClDiE. 473 



Well-developed fulcra are observed on a fragment of the 



pelvic fins, as also on the anterior border of each of the 



median fins ; and in the latter the foremost nine or ten 



rays gradually increase in length, until the longest ray is 



reached. The dorsal fin is almost the precise counterpart 



of the anterior half of the anal ; and while the longest 



ray of the latter measures about 00 65 in length, the 



depth of its hinder fringe-like portion scarcely exceeds 



0*012. In both these fins the articulations of the rays 



are distant, the joints being much longer than broad, and 



the basal joint at least twice as long as any of the others. 



The upper caudal lobe measures not less than 0*17 in 



length, while the lower lobe of the fin cannot have 



exceeded a length of 0*12 or 0-13. The rays of the 



anterior half of the lower lobe of this fin are more robust 



and more closely articulated than those of the upper lobe 



and of the other median fins. In the squamation all the 



characters of the genus and species are displayed, and the 



posterior half of each dorsal scale continues to exhibit 



the ridged ornament even to the end of the caudal region; 



immediately beneath the dorsal fin, however, all the scales 



are destitute of ornamentation, possibly abraded. Portions 



of the lateral line are distinct. Enniskillen Coll. 



39698. Imperfect remains of head, pectoral fin, and anterior abdo- 

 minal region in counterpart ; Midderidge. 



Purchased, 1866. 



43267. Portions of head and anterior abdominal region ; Midde- 

 ridge. Purchased, 1871. 



P. 3408. Imperfect remains of head and anterior abdominal region, 

 with some pectoral fin-rays ; Midderidge. 



Enniskillen Coll. 



P. 3415. Imperfect remains of head and trunk, wanting all the 

 fins, except a few rays of the pectoral and pelvic pairs ; 

 Ferry Hill. The striations of the head-bones are shown 

 in impression, and the large teeth exhibit the characters 

 noted in the specific diagnosis. Portions of nearly all the 

 neural arches in the abdominal region are preserved, and 

 there is a distinct paired series of short, broad, haemal 

 elements. The ridged ornamentation of the dorsal scales 

 is shown by impressions to have been comparatively 

 prominent. Enniskillen Coll. 



