^' 





THE 



OEOLOGICAL MAGAZINE: 



OR, 



WITH WHICH IS INCORPORATKD 



"THE G^E OLOG-IST." 



NOS. CCLXXI. TO CCLXXXII. 



EDITED BY 



HEIsmY WOODWAED, LL.D., P.R.S., Y.P.G.S., F.Z.S., E.E.M.S., 



OF THE BRITISH MUSEUM OF NATURAL HISTORY; 

 VICE-PRESIDENT OF THE PALiEONTOGRAPHICAL SOCIETY, 



MEMBER OP THE LTCEHir OF NATUKAL HISTORY, NEW YORK ; AND OF THE A3IEEICAN PHILOSOSHICAL 

 SOCIETY, PHILADELPHIA; HONORARY MEMBER OF THE YORKSHIRE PHILOSOPHICAL' 

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

 SOCIETIES OF EDINBURGH, GLASGOW, HALIFAX, Ln^ERPOOL, AND NOR- 

 WICH; CORRESPONDING MEMBEU OP THE GEOLOGICAL SOCIETY 

 OF BELGIUM; OF THE IMPERIAL SOCIETY OF NATURAL 

 HISTORY OF MOSCOW; OF THE NATURAL HISTORY 

 SOCIETY OF MONTREAL; AND OF THE 

 MALACOLOGIOAL SOCIETY 

 OF BELGIUM. 



ASSISTED BY 



EOBEET ETHEEIDGE, E.E.S. L. & E., E.G.S., E.C.S., &c., 



OF THE BRITISH MUSEUM OF NATURAL HISTORY. 



WILEEID H. HUDLESTON, M.A., E.E.S., Sec.G.S. 



AND 



GEOEGE J. HINDE, Ph.D., E.G.S., &c. 



NEW SERIES. 33EO-A.de III. 'VOTL.. JTV. 



JANUARY— DECEMBEE, 1887. 



LONDON • 



TEtJBNEE & Co., 57 and 59, L1>3)@ATE HILL. .^. 

 F. SAVT, 77, BOULEVAET ST.-GEEMAIN, PA*4^fl)jiL t"^"^^ 



1887. '^ 



