68 



BRITISH FOSSILS. 



sculpturing of the surface is shown in the enlarged figure on the 

 plate. The course of the lateral line is seen in some of the speci- 

 mens. It runs along the flank about mid-distance between the 

 dorsal and ventral margins. 



I have recently received some spines from the Farnell beds, which 

 correspond both in size and character with the specimens figured 

 by Agassiz from Balruddery. They leave no doubt in my mind 

 but that they are distinct from the species I have described ; I 

 therefore retain the specific name G. scutigev for the small species, 

 leaving the Agassizian name for the larger species, but removing it 

 from the Placoid order to the Acanthodean family of the Ganoids. 



Locality. — All the best specimens I have examined of this fish 

 are from the Farnell locality, where it appears to be one of the 

 most abundant fossils. I am informed, however, by the Rev. Hugh 

 Mitchell that it has also been found by him at Cauterland, in the 

 parish of St. Cyrus ; and at Tealing, five miles to the north of 

 Dundee; by Mr. Walter McNicol. 



Explanation op Plate VIII. 



Fig. 1. Climatius scutiger, from Mr. Mitchell's original specimen. 



Fig. 2. Ditto, belonging to Mr. Powrie. 



Fig. 3. Ditto, ditto. 



Fig. 4. Ditto, belonging to Mr. Brewster. 



These four figures are twice the size of nature. 

 Fig. 5. Climatius scutiger. 1st dorsal spine. 

 Fig. 6. Ditto. Pectoral spine. 



Fig. 7. Ditto. Anal spine. 



Fig. 8. Ditto. 2nd dorsal spine. 



Fig. 9. Ditto. Pectoral spines and attachments. 



These five figures are four times the size of natiu'e. 

 Fig. 10. Climatius scutiger. Scales highly magnified. 



Fig. 11. Climatius reticulatus. 1st dorsal spine from Agassiz 's " Poissons Fossiles du 



Vieux Gres Kouge," pi. 33, fig. 25. 

 Fig. 12. Climatius reticulatus. 2nd dorsal spine from Farnell. 

 Fig. 13. Ditto. Pectoral spine from Farnell. 



The last three figures are the size of nature. 



P. DE M. Grey EGEPtTON. 



Owlton Park, December 1800. 



