JS. D. WeUburn—Flsh Fauna of 3lilktone Grit. 221 



Family CCELACANTHIDiE. 

 Genus CffiLACANTHUS, Agassiz, 1836, 1843. 

 Ccelacanthus, sp. nov. ? 

 I have found several slabs showing the remains of this genus, but 

 am as yet not eatisfied as to the species, although I am inclined to 

 regard it as new on account of the proportion and ornamentation of 

 the head bones and the sculpture of the scales. 



Form, and loc. : D Shales, Middle Grits, Summit. 



Family PALyEONISCIDiE. 

 Genus EHADINICHTHYS, Traquair, 1877. 

 Rhadinichthys, sp. nov. 

 Form, and loc. : D Shales, Middle Grits, Summit. 



Rhadinichthys, sp. nov. ? 

 Form, and loc. : D Shales, Middle Grits, Summit. 

 Genus ELONICHTHYS, Giebel, 1848. 



Elonichthys Aitkeni, Traq., 1886. 



Several fragments of this fish have been found. 



Form, and loc. : D Shales, Middle Grits at Summit and Wadsworth 

 Moor ' (also B and C Shales, Middle Grits and the Rough Kook,^ 

 localities not given-). 



Elonichthys, sp. nov. 

 Form, and loc. : D Shales, Middle Grits, Summit. 



Elonichthys, sp. nov. 

 Form, and loc. : D Shales, Middle Grits, Summit. 

 Genus ACROLEPIS, Agassiz, 1833, 1844. 



Acrolepis Hopkinsi, McCoy, 1855. 



Several fine fragmentary specimens of this fish have been found, 

 notably those from Wadsworth Moor which are in the Woodwardian 

 Museum, Cambridge.^ 



Form, and loc. : D Shales, Middle Grits at Summit and 

 Wadsworth Moor. 



Note. — I intend to fully describe the new species later. Mr. John 

 Ward, F.G.S., who has seen the specimens, quite agrees with me 

 that they are undoubtedly new. The fish remains, with two or three 

 exceptions, are in the author's cabinets. 



Before concluding, I must acknowledge, with warmest thanks, 

 the great obligation I am under to Dr. Henry Woodward, F.R.S., 

 etc., and Dr. A. Smith Woodward, F.L.S., for allowing me to 

 examine and compare my fish remains with those in the Natural 

 History Museum, Cromwell Eoad. I am also indebted to Mr. John 

 Ward, F.G.S., for giving me his opinion on the new Paleeoniscida?. 



' Wellburn, op. cit. 

 ^ Spencer, op. cit. 

 ' Welll)nrn. op. cit. 



