44 



Description of Plates — II. to X. 



Plate II. 

 Fig. 1. A specimen of Coslacanthus Upturns, of the natural size. In the Museum of 



Practical Geology. 

 Pig. 2. The anterior part of the body enlarged. 

 Figs. 3, 4. Scales magnified. 



Plate III. 



Fig. 1. Ccelacanthus lepturus, of the natural size. 



Fig. la. Scales magnified. 



Fig. lb. Part of the ornamentation of the operculum magnified. 



Fig. 2. The hinder part of the body of a Ccelacanthus lepturus, of the natural size, 



showing the remains of the ossified air-bladder. 

 Fig. 3. Under view of the head of a Ccelacanthus lepturus. 



All these specimens are in the Museum of Practical Geology. 



Plate IV. 

 Fig. 1 . Magnified view of the counterpart of the specimen represented in Plate III., 



fig. 3. 

 Fig. 2. The mandible of the same inverted. 

 Fig. 3. Under view of the head of a specimen in the collection of Edw. Binney, 



Esq., F.K.S. 

 Fig. 4. Pelvic bones of Ccelacanthus lepturus. In the Museum of Practical Geology. 

 Fig. 5. The two dorsal fins of a Ccelacanthus lepturus. In the Museum of Practical 



Geology. 

 Fig. 6. Caudal extremity of a specimen of Ccelacanthus lepturus. Magnified l£ times. 



Plate V. 



Figs. 1, 2, 3, 4. Ccelacanthus elegans. From specimens in the collection of Sir Philip 



Egerton, Bart. 

 Fig. 5. Ccelacanthus caudalis. In the collection of Sir Philip Egerton, Bart. 

 Figs. 5, 6. Ccelacanthus elongatus. In the Museum of the Geological Survey in 



Ireland. 



Plate VI. 



Holophagus gulo, with a scale and fin-rays magnified. In the Museum of 

 Practical Geology. 



Plate VII. 



Fig. 1. Macropoma Mantellii. One half the size of nature. In the Museum of 



Practical Geology. 

 Fig. 2. A detached air-bladder of Macropoma Mantellii. One-half the size of 



Dature. In the British Museum. 

 Fig. 3. The head of Macropoma Mantellii figured by Prof. Agassiz, ' Recherches' 



II, PI. 65 d, fig. 2, the matrix having been further cleared away. 

 Fig. 3a. The teeth enlarged. In the British Museum (No. 4237). 

 Fig. 4. A side view of the snout of the Macropoma Mantellii. Figured by Prof. 



Agassiz, I.e. Fig. 1. In the British Museum (No. 4,270). 

 Fig. 4a. Front view of the dentigerous " premaxillary " bone. Magnified. 

 Fig. 4b. The upper end of the pectoral arch of this specimen. 

 Fig. 5. A pectoral fin of a Macropoma Mantellii. In the British Museum 



(No. 4,258). 

 Fig. 6. The head of a Macropoma Mantellii. Figured by Prof. Agassiz, I.e. 



Fig. 3. In the British Museum (No. 4,252). 



