PLATES IN VOL. I. 



Pi-ate I. Sphrigodesgunni,Deiraclognathu9 fasciatus.and Cylindrobaria 

 nrnata. 

 II. Protoechinus anceps. 

 III. Portions of lower jaw of Stereognatlms ooliticus. 



' > Mollusca from Persian Gulf and Arabian Sen. 



ERRATUM. 



Page 157, line 4, and page 158, line 37, for Cypricardia read Venertipis. 



