SPERM-WHALE. 415 



CETA CEA . PH Y SET BRIDGE, 



(ODONTOGET1.) 



Genus PHYSETER (Linn., 1766). 



Generic Character. Head enormously large, truncated ; no distinct dorsal- 

 fin. Edges of maxillary bones elevated, enclosing a hollow basin in front of 

 the skull. Lower jaws united by a symphysis of nearly half their whole 

 length. Teeth of upper jaw rudimentary or absent, those of lower jaw 

 numerous, large, and conical. 



SPERM-WHALE OR CACHELOT. 



Physeter macrocephalus (Linnaeus). 



Specific Character. Black above, shaded to grey beneath. Vertebrae 

 49-50; ribs 10 pairs. Length of adult male 60 to 70 feet, female much 

 smaller. 



Physeter macrocephalus, LINNJEUS, Syst. Nat., I., 107 (1766). 



Catadon , , LACEPEDE, Hist. Nat. des CSt. , t. 10 (1804). 



,, australis, WALL,"NewSpermWhale"(Sydney,lS51). 



? Balcenamacrocephala tripinna, SIBBALD, Phal. Nov., t. 2. 

 ? Physeter tursio, LINKEUS, Syst. Nat., I., 107. 



THE history of the Sperm-Whale or Cachelot has been 

 involved in much confusion, and several distinct species 

 have been discriminated by various writers. Of these the 

 most remarkable is the so-called " High-finned Cachelot," 

 of which two examples are said to have occurred on the 

 Scotch coast in the years 1687 and 1689, which were 

 described by Sir Robert Sibbald under the name of 

 Balana macrocephala tripinna. These animals are stated 



