FISHES AND MARINE ANIMALS. 261 



towards the narrow end, it is divided by grooves into various plates or 

 pieces. This fossil and No. 8 are found imbedded together in the oolite. 

 No. 10, also from the Malton oolite, is nearly allied to No. 9; but is 

 less divided towards the narrow end, where it is marked with six longi- 

 tudinal rows of minute spines. The rest of the shell is marked with 

 numerous punctures, or depressed dots, instead of having imbricated 

 scales. Both halves of the shell are seen in the figure. An imperfect 

 and distorted specimen is given on the Title-page of the Scarborough 

 Catalogue. 



Nos. 9 and 10 have obtained the name beetles, from their resem- 

 blance to the beetle tribes. 



FISHES AND LARGE MARINE ANI3IALS. 



Under this head also we have few articles to introduce; but 

 these few are highly interesting. 



Of the finny tribes, those fishes which have hard scales are the 

 most likely to be found petrified. A beautiful fish of this description 

 has been recently discovered in the compact shale. Fig. 7, PI. XVI, 

 shews the head of this kind offish, and part of the body; and Fig. 8, 

 nearly the whole body, with about one half of the tail, and a portion 

 of the head, or rather, of the gill-covers. This fish seems to belong 

 to the genus esox ( the pike) , several species of which have bony 

 scales ; and it seems most akin to the esox Levericmus, or the esox 

 Chilensis. The head is rather compressed, and is shorter than in 

 most pikes. It is covered with black, shining, bony plates, regularly 

 and beautifully arranged ; generally smooth, but marked in some pla- 

 ces with raised dots or prickles, and branching lines. The frontal 

 plates, and the plates next to the large gill-covers, bear most of these 

 markings. The teeth are numerous, small, and sharp; as in most 

 pikes. The body is covered all over with large and thick quadrangular 



3 s 



