﻿PALiEONISOTD^E. 459 



P. 3445. Head, opercular apparatus, and some anterior scales, pre- 

 served in counterpart ; Calciferous Sandstone, Wardie, 

 near Edinburgh. The maxilla, dentary, operculum, sub- 

 ' operculum, branchiostegal rays, and some other bones, arc 

 well shown from the inner aspect. Enniskillen Coll. 



P. 846. Similar head, in counterpart, with the imperfectly pre- 

 served abdominal region ; Wardie. Portions of the 

 external ornament are seen on some of the bones. 



Egerton Coll. 



19815. Fragment of squamation ; Wardie. Purchased, 1845. 



50094. Eemains of jaws : Calciferous Sandstone, Burdiehouse, near 

 Edinburgh. Purchased, 1879. 



50088. Fragments of dentary bone ; Calciferous Sandstone, Grange 

 Quarry, Burntisland, Fifeshire. Purchased, 1879. 



P. 846 a, P. 3440. Portion of trunk, with dorsal and anal fins, in 

 counterpart ; Burntisland. Egerton Sf EnnisJcillen Colls. 



45867. Group of head -bones and scales, associated with similar 

 remains of Eurynotus crenatus, noticed by B. H. Traquair, 

 Ann. Mag. Nat. Hist. [4] vol. xv. (1875), p. 258 ; Burnt- 

 island. Presented by W. Carruthers, Esq., 1874. 



P. 847. -Scattered remains of head and scales, especially displaying 

 the mandible ; Carboniferous Limestone (Edge Coal 

 Series), neighbourhood of Edinburgh. Egerton Coll. 



P. 4338. Similar group of remains, displaying the maxilla ; Car- 

 boniferous Limestone (Edge Coal Series), Wallyford, near 

 Edinburgh. Enniskillen Coll. 



Genus CYCLOPTYCHIUS, Young. 

 [Bep. Brit. Assoc. 1865 (1866), p. 318.] 



Trunk narrow and elongated. Mandibular suspensorium oblique ; 

 teeth in two series, a small outer row and larger, well-spaced lani- 

 aries within. Fins of moderate size, with distinct fulcra, and the 

 rays distally bifurcating ; principal rays of pectoral fin unarticulated 

 except distally ; dorsal and anal fins triangular, short-based, almost or 

 completely opposed ; upper caudal lobe slender, and caudal fin deeply 

 forked. Scales large, ornamented with ridges chiefly concentric 

 with the margins. 



