Remams in the Oolite Series of England and France. 95 



Unfortunately M. Boblaye has not furnished us with a list 

 of the ammonites in the district noticed by him, otherwise we 

 might probably have seen that some of tliose discovered else- 

 where, were also found in the North of France. Ammonites 

 concavus and A. elegans are marked as questionable in the 

 North of England, but they are stated to occur in the lias of 

 Normandy. The Dapedium politum is found in the South of 

 England and in Normandy. 



Of the organic I'emains above enumerated, the Gryphaea 

 incurva So'jo. (G. arcuata Lam.) appears the most charactei'- 

 istic fossil. — Belemnites are also abundant. Unfortunately the 

 synonyms of the fossils are not well understood ; so that the 

 species cannot be determined with precision. Ammonites Wal- 

 cotii, Spirifer Walcotii, Pecten equivalvis, Piagiostoma gigan- 

 tea, Avicula ineequivalvis, Modiola scalprum, have also a wide 

 range. Ammonites Turneri and Terebratula tetraedra occur 

 in localities widely separated from each other. 



Ammonites Bucklandi is extensively found, though, by the 

 accompanying lists, it is only noticed in the North and South 

 of England and in Normandy. 



Of the 90 species of fossil shells enumerated by Mr. Phillips 

 in the lias of Yorkshire, 26 occur in the same rock in the 

 other localities ; of these 15 are discovered at Lyme Regis, 

 9 in Normandy (belemnites not being specified), 2 in the 

 North of France (neither ammonites nor belemnites being 

 specified), and 8 in the South of Fi-ance. 



Of the 36 species mentioned as found at Lyme Regis, 19 

 have been observed in the other places; of these 15 occur in 

 Yorkshire, 8 in Normandy, 2 in the North of France, and 7 

 in the South of France. 



Of the 25 species enumerated in Calvados, 12 are disco- 

 vered in the other localities; of these 9 occur in Yorkshire, 

 8 at Lyme Regis, 2 in the North of France, and 5 in the 

 South of France. 



Of the 5 s])ecies noticed by M. Boblaye in the North of 

 France, who unfortunately does not mention the species of 

 either ammonites or belemnites, 3 are found in the other lo- 

 calities ; and of these 2 occur in Yorkshire, Lyme Regis, and 

 Normandy, and 3 in the South of France. 



Of the 26 species noticed in the South of France, 1 3 are 

 found in the other localities; and of these 8 occur in York- 

 shire, 7 at Lyme Regis, 5 in Normandy, and 3 in the North 



of France. 



[To be continued.] 



XIL On 



