THE 



QUARTERLY JOURNAL 



OF 



THE GEOLOGICAL SOCIETY OF LONDON. 



I. PBOCEEDINGS 



OF 



THE GEOLOGICAL SOCIETY. 



March 6. 1844. 



The following communications were read : — 



1. On Two Fossil Species of Creseis (?) collected by Professor 

 Sedgwick. By E. Forbes, Esq., F.R. S. F.L. S., Profes'sor of 

 Botany in King's College, London. 



Creseis is a genus of Pteropodous Mollusca established by M. 

 Sander Rang to include several species of simple, more or less aci- 

 cular shells. Their surface is smooth or transversely striated, 

 rounded, and sometimes presenting a longitudinal groove. The 

 animal resembles that of Byalcea, but is not furnished with the 

 two caudiform lateral appendages with which the Hyalcea is pro- 

 vided. All the species are small, none being more than an inch in 

 length. They are oceanic animals, free swimmers, and their re- 

 mains are found in abundance in the fine mud of great depths. 



VOL. I. L 



