SYSTEMATIC INDEX. x'l 



I. IIyperoodon, Lacep. 276 



I. rostratus (Miill.) 276 



[I. Mesoplodon, Gcrv. 279 



I. bidens (Sowerby) 279 



V. ZiPHius, Cuv. 282 



I. cavirostris, Cuv. 282 



AMILY DELPHINID^ 282 



MONODON, L 283 



I. monoceros, L. ... ... ... .. ... ... ... 283 



L Delphinapterus, Lacep 284 



I. leucas (Pall.) 284 



[I. Phoc^na, Cuv 285 



I. communis, Less. ... ... 286 



/. Orca, Gray 287 



I. gladiator (Bonn.) ... 287 



j, Globicephalus, Less. 289 



j I. melas (Traill.) 



|[. Grampus, Gray 290 



I. griseus (Cuv.) ... 291 



[L Lagenorhynchus, Gray 292 



I. albirostris (Gray) ... ... ... 293 



2. acutus (Gray) 

 IL Delphinus, L. 



I. del phis, L. 

 . TuRSioPS, Gerv. 



I. tursio (Bonn.) 



294 



295 

 296 

 296 

 297 



IE ANCIENT MAMMALS OF BRITAIN 298 



The Cavern and Brick-earth Period 298 



The Forest-bed and Crag Periods 308 



. The Lower Tertiary Period 319 



