430 Proceedings of the British Association. 



fish. This animal forms a new genus under the name Megalichthys\ 

 and confirms the opinion I formerly expressed, that we observe 

 in older deposits organic remains which, with the usual characters 

 of their family, unite the characters of the types which have made 

 their appearance at a more recent period. Unfortunately no per- 

 fect specimen of the Megalichthys has been found, and it has not 

 been possible to bring together all the different parts of the skeleton. 

 Anotlier new genus, related to the Amblypterus, has a long dorsal 

 fin extending beyond the ventral fin and the anal fin, and may be 

 named the Euronotus. The other species belong to the genera 

 Pygopterus and Amblypterus. Very large Icthyodorulites occur not 

 unfrequently, and seem to belong to the genus Hybodus. 



At Newhaven eight species occur, of which some bear a con- 

 siderable resemblance to the fossil fishes of Saarbruck ; though still 

 distinguished from them by some characters. They belong to the 

 genera Pygopterus, Amblypterus, and Palaeoniscus ; and there is 

 one species which will in all probability form a new genus, as it 

 diflers considerably from the genus Acrolepis. Placoidian fishes 

 are also found, but only in fragments, so that I have not been able 

 to determine them ; and there are two other species of which small 

 traces only have been obtained. 



In the coal formation of Fifeshire a new specimen of Palaeoniscus 

 has been found. 



It may appear strange that I should consider the Gamrie fossil 

 fishes as belonging to the coal formation, but they seem to be so 

 nearly related to that deposit that I cannot regard them as of 

 much more recent origin. There are three species, viz. one Cheira- 

 canthus, one Palaeoniscus, and a third of which perfect specimens 

 have not yet been obtained. 



From this short notice, it must be evident how important the 

 study of fossil fishes of Scotland is for advancing our knowledge 

 of the beings which existed before the oolitic period, and how much 

 we may yet expect from future careful investigations. 



Dr Knight of Aberdeen read a notice on the Flints found in 

 various parts of Aberdeenshire, and more especially in the vicinity 

 of Peterhead. He particularized the fossils found in them, and ex- 

 hibited an interesting series of specimens. 



Mr Saul exhibited drawings of the incisors and canine teeth of 

 the fossil hippopotamus, from a gravel pit near Huntingdon. 



Mr Hall's model of a part of Derbyshire was exhibited. 



