5- 



i 





THE 



GEOLOGICAL MAGAZINE: 



Iftonthtg Journal of ^eotoign: 



WITH WHICH IS INCORPORATED 



"THE aEOLOGIST." 



NOS. CCCVII. TO CCCXVIII. 



EDIYF.O by 



HENRY WOODWARD, LL.D., F.R.S., F.G.S., F.Z.S., F.R.M.S., 



OF THE BRITISH MUSEUM OF NATURAL HISTORY ; 

 VICE-PRESIDENT OF THE PAL^EONTOGRAPHICAL SOCIETY, 



MEMBER OF THE LYCEUM OF NATURAL HISTORY, NEW YOEK ; AND OF THE AMERICAN PHILOSOPHICAL 

 SOCIETY, PHILADKLPHIA ; HONORARY MEMBER OF THE YORKSHIRE PHILOSOPHICAL 

 SOCIETY; OF THE GEOLOGISTS' ASSOCIATION, LONDON; OF THE GEOLOGICAL 

 SOCIETIES OF EDINBURGH, GLASGOW. HALIFAX, LIVEBPOOt, AND NOR- 

 WICH; CORRESPONDING MEMBEK OF THE GEOLOGICAL SOCIETY 

 OF BELGIUM; OF THE IMPERIAL SOCIETY OF NATURAL 

 HISTORY OF MOSCOW; OF THE NATU RAL HISTOEr 

 SOCIETY OF MONTREAL; AND OB THE 

 MALACOLOGICAL SOCIETY 

 OF BELGIUM. 



ASSISTED BY 



ROBERT ETHERIDGE, F.R.S. L. & E., F.G.S., F.C.S., &c, 



OF THE BRITISH MUSEUM OF NATURAL HISTORY. 



WILFRID H. HUDLESTON, M.A., F.R.S., Y.P.G.S., F.L.S., F.C.S. 



AND 



GEORGE J. HINDE, Ph.D., F.G.S., &c. 



NEW SERIES. DECADE III. VOL. VII. 

 JANUARY— DECEMBER 1890. 



LONDON: 

 KEGAN PAUL, TRENCH, TRUBNEfc & Co. Limited, 



57 and 59, LUDGATE HILL. \<? - ..cV^ 



F. SAV'Y, 77, BOULEVAET ST.-GEEMAIN, P 

 1890. 



