180 Reports and Proceedings. . 



4. Mesolepida. Teeth similar to those of Eurysomus. Mesolepis, 



n. g., Eurynotus, Ag. 



5. Pycnodontidce. Teeth oval or hemispherical, or, if elongate, 



blunted cones. Pycnodonts of authors (except the Labroid 

 forms of Cocchi). 



Platysomus ranges from the Carboniferous to the Permian, one 

 species, P. striatus, being common to both, as well as to England 

 and Germany. Eurysomus is Permian only ; the true Pycnodonts 

 exclusively Mesozoic. The remaining families are Carboniferous, 

 while the first three disprove the generalization as to the non- 

 existence of apodal fish before the Chalk. 



5. "Note on the Scales of Bhizodus, Owen." By John Young, 

 M.D., F.G.S. 



Attention was drawn to the fact that, on a slab in the collection 

 of the Eoyal Society at Edinburgh, the characteristic Bhizodus teeth 

 occur along with thick bony scales, whose exposed area is orna- 

 mented with coarse tubercles, usually irregularly disposed, while 

 the overlapped anterior area is concentrically striated. These cha- 

 racters confirm the generic distinctness of Bhizodus from Holopty- 

 chius, whose smooth anterior and rugose free surfaces contrast with 

 those described. 



The following donations to the Society's Museum were exhibited : 

 — Tertiary Echinoderms from Trinidad and Anguilla ; presented by 

 E. J. L. Gruppy, Esq. Specimens of siliceous incrustations from the 

 Hot Springs of New Zealand ; presented by Miss Kinder. Proto- 

 graphs of the Hot Springs of New Zealand; presented by the 

 Eev. J. Kinder. 



II. March 7, 1866.— Warington W. Smyth, Esq., President, in 

 the chair. The following communications were read : — 1. " Docu- 

 ments relating to the formation of a new island in the neighbourhood 

 of the Kameni Islands." By St. Vincent Lloyd, Esq., H.M. Consul 

 at Syra, A. Delenda, Esq., Consular Agent at Santorino, and M. 

 Decigala. Communicated by the Secretary of State for Foreign 

 Affairs. 



In these documents it was stated, that on or about February 1st, 

 the sea in the neighbourhood of the Kameni Islands, in the centre 

 of the crater forming the harbour of Santorino, began to show signs 

 of volcanic action, and that the result has been the formation of a 

 new island, which has since become nearly joined to the south of the 

 island Nea Kameni. Details of the volcanic phenomena observed 

 up to February 7th were given in the letters from Messrs. Lloyd 

 and Delenda ; and, in the impression of " La Grece " newspaper of 

 February 15th, M. Decigala gave an account of the further progress 

 of the upheaval and increase of the new island, which he had named 

 " George the First." 



2. " On the Carboniferous Slate (Devonian Eocks) of North 

 Devon and South Ireland." By J. Beete Jukes, Esq., M.A., 

 F.E.S., F.G.S. 



Mr. Jukes gave a sketch of the geological structure of the south- 



