354 PHYSIOLOGICAL SERIES. 



D. 518. The brain of a Dolphin (Delphinus sp.). 



0. C. 1333 D. 



D. 519. The brain of a Dolphin (Delphinus delphis), ($ ). 



0. C. 1333 G. 

 Presented by Matthias Dunn, 



D. 520. A cast of the cranial cavity of a Beluga or White Wh:il 

 (Delphinapterus leucas) . 



D. 521. The brain of a Beluga or White Whale (Delphina.j>- 



leucas} : from a female 9 ft. long. The fresh brain weighed 

 1797 grammes. 



The brains of the Beluga and all the Dolphins closely 

 resemble that of the Porpoise. 0. C. 1333 F. 



Presented by M. Morris, 7>--/. 



Kiikenthal and Ziehen, Denksch. d. med.-n;it. Gesell. 

 Jena, Bd. iii. 1893, p. 108. 



Family PHYSETEEIDJE. 



D. 522. A cast of the cranial cavity of a Sperm Whale (Ph>< 

 macrocephalus). 



Suborder MYSTACOCETI. 

 Family EAL^ENIDJE 



D. 523. The brain of a Rorqual (Balcenoptera, probably musculn*}, 

 from which the right hemisphere has been removed. 



D. 524. The right hemisphere of the same brain. 



[In the absence of any definite information concerning 

 the species of the Whale of which this is the brain, I 1m v 

 called it " musculus" because its dimm-ions ;ignM- to within 

 a millimetre with those given by Goldberg for tlii> specie*, 

 whereas they differ considerably from the measurement- 

 the other species of Rorqual as given by the same writer!] 



Tlii- is the largest brain of any living animal, and yt. 



