ADDITIONS AND CORRECTIONS. 393 



Inia Greoflfroyii (page 226), add to synonyms : — 

 Inia Geoffrensis, Gervais, Castehmu, Votj. Amer. du Sied, 90. 1. 19. f. 3. 



Bouto, or Inia Geoff ro)jii. "When this rises, the top of the head is 

 the first part seen (at the blower), and immediately afterwards it dips 

 head downwards, its tail curving over, exposing successively the whole 

 dorsal ridge with its fin (?). It seems thus to pitch heel over head, but 

 does not show the tail first. They generally go in pairs. It is not 

 kUled willingly ; the superstitious people believe that blindness would 

 result from the use of its oil in lamps." — Bates, Amazons, ii. 264. 



" The Bouto, the Tuciwi, and D. pallidus are all three found 1500 

 miles in the interior." — Bates, op. cit. i. 146. 



DELPHINID^. 



Page 230, Synopsis of Genera, add after Tuesio : — 



4*. SoTALiA. Dorsal distinct. Beak of skull elongate, depressed. The 

 pectoral fin oval, obHquely truncated ; hand short. 



After Synopsis of Genera, add : — 



Delpliinidcn may be, perhaps, naturally arranged according to the 

 form of the pectoral fin. 



I. Pectoral Jin elonr/ate, falcate, acute at the end; hand as long as the arm- 



bones; two forearin-hones close together, only separated by a straight 

 line ; carpal bones moderate, 5 or 7, close together, only separated by 

 a thin cartilage. Delphinina. 



A. Head more or less beaked ; beak of skull slender, as long as or longer 



than the brain-cavity, ^-c. 



1. PoNTopoRiA. 2. Stexo. 3. DELPHixrs. 4. Trasio. 5. Lage-.„^ /^iatt^y^ 



NOKHYNCHUS. 6. DeLPHINAPTERUS. '^ ^ _ ^ - 



B. Head rounded in front, scarcely beaked, i^-c. 



8. Pseudorca. 9. Grampus. 10. Phoc^na. 11. Xeomeris. 



II. Pectored Jin large, broad, rounded at the end; hand shorter than the 



arm-bones ; carpal bone single, immersed in a large cartilage; pha- 

 langes of index Jinger 5. 



7. Orca. 



III. Pectoral Jin ovate, obliquely truncated ; hand shorter than the arm- 

 bones ; forearm-bones separate ; carpal bones small, immersed in thick 

 cartilage. 



12. Beluga. Dorsal none. Teeth deciduous. 

 12*. SoTALiA. Dorsal distinct. Teeth permanent. 



TV. Pectoral Jin small, orate, rounded at the tip; hands shoiier than the 

 arm-bones ; carpal bones o, small, immersed in a large cartilage ; 

 phalanges of index Jinger o. Dorsid none. 



13. MONOCEROS. 



