2 EEE Eos 
one PROF. L. C. MIALL ON A MEGALICHTHYS. 
left clavicle is plainly visible beneath the left pectoral fin; but 
nothing admitting of definite description can be made out. 
All the features of the present fossil confirm the opinion long ago 
expressed by Pander* and Huxley as to the near affinity of 
Megalichthys to Osteolepis and Diplopterus. 
Discussion. 
Prof. SEELEY remarked, that it was but seldom that so much was 
added to our knowledge of a long-known type, especially from a 
single specimen. For his own part, he could only offer his personal 
thanks to Prof. Miall for bringing so interesting a specimen under 
the notice of the Society, and for the valuable addition that he had 
made to our acquaintance with the characters of Megalichthys. 
Mr. Erseriper expressed a hope that in his paper Mr. Miall 
would furnish further details of the structure of the fins, to which 
especial interest attached. Specimens of Megalichthys are, as is 
well known, exceedingly rare ; so important a discovery as the present 
should be fully described and figured. 
The Autor briefly replied. 
* Die Saurodipterinen, Dendrodonten, Glyptolepiden und Cheirolepiden des 
devonischen Systems, p. 12 (1860). 
Tt Mem. Geol. Survey, dec. x. (1861). 
