146 



PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Gastropoda (continued). 



129. 



J. 



125. 

 133, 



125. 



130, 

 127, 

 129. 



133. 

 132. 

 128. 

 124. 



49. 



49. 



48. 



46. 

 313. 



61. 



60. 



60. 



51. 



122. 



75. 



76. 

 153. 

 113. 



20. 



II. 



Names of Species. 



Trochus Adansoni . 



buUatus, Fh. . . . 



conulus 



t ditropis 



f ormosus 



KicTcsii 



millegranus . . . 



Montacuti 



obconicus 



tricariniferus... 



vilUcus (?) 



zizyphinus 



Trophon alveolatum 



consociale . 



t costiferum 



\ t gracile , 



t gracilius . 



imperspicuum 



muricatum .., 



t paululum 



fTurbo sphajroidea . 



Turritella incrassata 



t planispira 



fVelutina virgata (?) 

 fVermetus intortus . 

 t?Voluta Lamberti . 



III. 



Critical remarks 

 and synonyms. 



A doubtful identi- 

 fication. 



Italian Pliocene ... 



T. zizyphinus, L. ... 



T. biangulatus, Eich- 

 wald, fide Homes 



T. occidentalis, 

 Mighels, var. 



T.Adansoni, S. W.,var. 



A doubtful identifi- 

 cation. 



T.Adansoni,8. W.,var. 



T. alveolatus 



T. alveolatus, var. ... 



T. costifer 



Not Fusus gracilis, 



I)aC.;¥. curtus,t/. 



Gr. Pleurotoma 



T. muricatus 



Defrancia teres, i'br^. , 



jun. 

 Cyclostrema spharo- 



ideum 

 T. triplicata, Brc. ... 

 T. subangulata, Src. 

 V. undata. Smith . . . 

 V.subcancellatus,.Bii;. 

 V. Junonia, Ch.? ... 



IV. 



Zones 



of 

 depth. 



Lt 



" c" 



C-D 



C-D 

 L-D 



Lt-D 



D 

 D 



ij-i) 



C-D 

 C-D 



C-D 



C-D 

 D 



Lt-C 

 D 



V. 



Geographical 

 distribution. 



M 



M 

 BS 



BSMW 

 BMW At 



BSMWAt 



W 



Am 

 W 



BMw" 



B S M W At 



At 



MW 

 M 

 A 



M 

 G Mexico ? 



VI. 



Localities 

 in the 



Coralline 

 Crag. 



SGo 



G 



r 

 S 



SB 



s go 

 Go 



S 



SGo 

 S 



s go 



SEBGo 



GGo 



grgo 



G 



GGo 



S 



Sd 

 SGo 



S 



s 



GEBGo 



S 



S 



SB. 

 AEGo 



VII. 



Belgian 

 Crags. 



CO &» 



03.5, 



VIII. 



Italy. 



Monte 

 Mario. 



V. Pteropoda. 





Clio caudata, L 



Pelagic 



BAt 



S 







buhim. 





N 



Number of species in the Coralline Crag according to the original lists of Mr. Searles Wood... 331 



Species regarded by Mr. Jeffreys as varieties 42 



Species added by Mr. Jeffreys 27 



Resulting total number of species 310 



Species for the first time identified as recent, and marked t 106 



EXPLANATION OF PLATE VI. 



Plan of the Coralline-Crag Hill at Sutton, Suffolk. 



Section through this hill from the river Deben to Shottisham Hall, with branch 

 section through the principal pits. 



