3^2 MAMMALIA. 



tP. With distinctly elongated rostrum generally marked ofi 

 from the antenarial adipose elevation by a V-shaped 

 groove; the rostral considerably exceeds the cranial 

 portion of the skull in length ; atlas and axis united, 

 other cervical vertebras free. 



g. Pterygoid bones normal, meeting in the middle 



line. 



h. Palate with deep lateral grooves; symphysis of 



lower jaw short; teeth small not exceeding 



3 mm. in diameter and fr to f^ i° number. 



Delphinus, p. 321. 



h^. Palate not grooved; symphysis of mandible 

 short; teeth stout 6 to 7 mm. in antero- 

 posterior diameter, f J to |f in number. 



Tursiops, p. 323- 



A^. Palate not grooved; symphysis of mandible 

 short ; teeth f§ to -f^, small not exceeding 3 

 mm. in diameter. Prodelphinus, p. 324. 



h*. Palate not grooved ; symphysis of the mandi- 

 ble longer than ith the length of the ramus ; 

 rostrum long and narrow ; teeth |4- to |^, 

 large 5 to 6 mm. in diameter. 



Steno, p. 324. 



^. Pterygoid bones narrow, separated in the middle 

 line, their inner borders diverging posteriorly; 

 teeth |i to ff in number, 4 to 5 mm. in dia- 

 meter. SotaUa. p. 325. 



Genus BALAENA. 



Balaena, LinncBus Syst, Nat., J2th ed., i, p. 105(1766). 



Balaena australis. 



Balsena australis, Desmoulins Diet. Class. H. N., ii, p. i6l (1822) ; Blyth, 

 J. A. S. B., xxviii, p. 488; id. Cat. no. 290, p. 94 j Flower P. Z. S, 

 1864, p. 390; id. List Cetacea B. M., p. 1. 



The Southern Right Whale. 

 Disiribulion. — Southern Seas. 



a. Scapula ■) '„.....,„ 



3 vertebra j No history, A.S.B. 



Balaena mysticetus. 



Balaena mysticetus, Linnaus Sysi. Nat., 12th ed., i, p. IDS [1766) ; Blyth Cat. 

 no. 289, p. 93; Flower P. Z. S., 1864, p. 390; id. List Cetacea B. M., p. i. 



