84 



REPORT 1877. 



Mielel by the apparent resemblance of Mediterranean and Atlantic ooze to 

 the ancient chalk, geologists have been accustomed to consider the chalk fauna as 

 having lived in deep water. Let us see how this is with respect to the Mollusca. 

 I have lately, with the assistance of Mr. Henry Woodward and Mr. Etheridge, 

 examined the Cretaceous Mollusca in the British Museum and the Museum of 

 Economic Geology ; and Mr. Etheridge has most obligingly prepared and furnished 

 me with a tabular list of the genera and number of species in each genus in the 

 Upper Cretaceous group (exclusive of the Gault and Greensand), which list I will, 

 with his permission, here insert : — 



