208 GEOGRAPHICAL ZOOLOGY. [PART iv. 



arctic and antarctic families. The spermaceti whale (Catodon 

 macrocephalus) abounds in the Pacific Ocean and in the deep 

 Moluccan Sea, and also in the Indian Ocean and the Mozam- 

 bique Channel. In the Atlantic it is scarce, although it occa- 

 sionally comes north as far as our shores. 



The genera of CatodontidaB as given by Dr. Gray are, Catodon 

 (2 species ?), Warm Eastern Oceans ; Physeter (1 species), " the 

 black fish," North Sea; Cogia (2 species), South Temperate 

 Oceans ; Euphysetes (1 species), Coast of Australia. 



FAMILY 39. HYPEEOODONTID^E. (9 Genera or Sub-Genera, 



12 Species.) 



GENERAL DISTRIBUTION. Atlantic, Mediterranean, Indian Ocean, and Southern 



Ocean. 



This family consists of the beaked whales, which have no per- 

 manent teeth in the upper jaw. The genera, according to Dr. Gray, 

 are, Hyperoodon (2 species), " bottle-nosed whales," North Sea ; 

 Lagenocetus (1 species), North Sea ; Epiodon (2 species), North 

 and South Atlantic; Petrorhynchus (2 species), Mediterranean 

 Sea and Southern Ocean ; Berardius (1 species), New Zealand ; 

 Xiphius (1 species) North Atlantic ; Dolichodon (1 species), Cape 

 of Good Hope ; Neoziphius (1 species) Mediterranean ; Dioplo- 

 don (1 species), Indian Ocean. 



FAMILY 40. MONODONTID^E. (1 Genus, 1 Species.) 



The " Narwhal " (Monodon monoceros) which constitutes this 

 family, is placed by Dr. Gray along with the " white whales," in 

 his family Belugida3. It inhabits the North Sea. 



FAMILY 41. DELPHINID^. (24 Genera or Sub-Genera, 

 100; Species.) 



GENERAL DISTRIBUTION. All Oceans, Seas, and Great Rivers of the globe. 



This family, including the Porpoises, Dolphins, White Whales, 

 &c., may be described as small, fish-shaped whales, having teeth 



