PLATE XXVIII. 



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1 . Platysomus striatus, Aga^uz. Young individual .- a, scales magnified ; b, impressions 



of ditto. Marl-slate, Thrislington Gap. Museum 

 of the Yorkshire Philosophical Society. 



2. Coelacanthus caudahs, Egerton. Marl-slate, Ferry Hill. Cabinet of Sir Philip de 



Malpas Grey Egerton, Bart,, M.P., &c. 



