PLATE VIIT. 



Fig. 



1. Elonichthys Bobisoni, Hibbert, sp. ; a shortened-up specimen of the variation 



intermedius, once described by the author as E. ovatus ; natural size. From 

 Burdiehouse ; in the Museum of Science and Art, Edinburgh. 



2. Elonichthys Robisoni, Hibbert, sp. ; natural size. From Burdiehouse, in the Hugh 



Miller Collection, Museum of Science and Art, Edinburgh. This is one of the 

 young forms to which tlie specific name was originally applied and limited l)y 

 Hibbert and Agassiz. 



3. Elonichthys Robisoni, Hibbert, sp. ; tlank scale, magnified eight diameters. 



4. Elonichthys Robisoni, Hibbert, sp. ; scale from a more posterior position, also mag- 



nified eight diameters. 



