GLOBICEPHALTJS. 577 



forms a trident posteriorly and there are white patches on each 

 side of the head. The accompanying figure may enable the species, 

 if seen in Indian seas, to be recognized. 



Genus GLOBICEPHALTTS, Lesson (1842). 



Head globular, no beak. Dorsal fin long, low and thick. Pec- 

 toral fins narrow and long. 



Teeth few and confined to the anterior half of the rostrum and 

 to the corresponding part of the mandible. Skull broad and 

 depressed, rostrum broad and flat ; premaxillae very broad, nearly 

 or quite covering the maxillae anteriorly. Symphysis of mandible 

 short. Pterygoids large, prominently keeled and in contact. 

 Vertebrae: C. 7, D. 11, L. 12-14, C. 26-29 = 56-59. 



The members of this genus, known as ' Ca'ing Whales,' ' Pilot 

 Whales,' and ' Blackfish,' are found in all seas and grow to a 

 considerable size. 



383. Globicephalus indicus. The Indian Pilot Whale. 



Globicephalus indicus, Btyth, J. A. S. E. xxi, p: 358, xxviii, p. 490; 

 id. Cat. p. 89 ; Jerdon, Mam. p. 160 ; True, Delphinidce, p. 137 ; 

 W. Sclater, Cat. p. 319. 



Nearly allied to G. melas of the European seas, but the colour is 

 different, there are fewer and stouter teeth, 6-7 above and 7-8 

 below on each side, and the premaxillaries are much broader and 

 completely cover the maxillaries in the rostrum. Vertebrae : C. 7, 

 D. 11, L.'l2, C. 26 = 56. 



Colour uniform leaden black, slightly paler beneath. 



Dimensions of an adult male : Length 14 ft. 2 in., pectoral fin 

 24 inches long and 6 broad, dorsal fin 27 long and 11 high, expanse 

 of tail 3 ft. Total length of a skull 65 inches, length of rostrum 33, 

 breadth of skull between orbits 47, breadth of beak at the middle 

 of its length 25, breadth of prernaxillse at same place 22. 



Distribution. This large porpoise has hitherto only been observed 

 on one occasion in the salt or brackish water of the Gangetic 

 delta. 



Habits. The typical examples, two in number, were from a shoal 

 that were found stranded by Blyth on the shallows of Salt-water 

 Lake, near Calcutta, in July 1852. The shoal was said to have 

 consisted originally of several dozens. The animals when observed 

 were floundering about in the shallow water and groaning painfully. 

 Other specimens, which Mr. Blyth regarded as the young of this 

 cetacean, have been shown by Dr. J. Anderson (An. Zool. Kes. 

 p. 369) to be Orcella brevirostris. 



A genus somewhat allied to Globiceplialus, and resembling it in 

 external form, is Grampus, a pelagic type, of which a representative 

 is very likely to be found in Indian seas. There are no teeth in 



