ADDITIONS AND COEEECTIONS. 393 



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

 Ima Geofflensis, Gervais, Castekutu, Voy. AmSr. du Sud, 90. 1. 19. f. 3. 



Bouto, or Inia Qeoffroyii. ""Wien tHs rises, tte top of the head is 

 V, i'^^ P^""* seen (at the blower), and immediately afterwards it dips 

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

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

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

 kiUed willingly; the superstitious people beUeve that blindness would 

 result from the use of its oil in lamps."— 5a<«s, Amazons, ii. 264. 



_" The Bouto, the Twuxi, and D. pallidus are aU three found 1500 

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



DELPHINID^. 



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



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

 pectoral fin oval, oblic[uely truncated; hand short. 



After Synopsis of Genera, add : — 



BelphinidcB may be, perhaps, naturally arranged according to the 

 form of the pectoral fin. 



I. Pectoral fin elongate, fahate, acute at the end; hand as long as the arm- 

 hones; two forearm-hones close together, only separated hy a straight 

 line ; carpal hones moderate, 5 or 7, close together, only separated hy 

 a thin cartilage. DelpHnina. 



A. Head more or less hedked; heak of skull slender, as long as or longer 



than the hrain-cavity, 8fc. 



1, PoNTOPOBiA. 2. Stbno. 3. Dblphinus. 4. Ttjesio. 5. Lage- 

 NOEHyNCHUs. 6. Dblphinapteeus. 



B. Head rounded in front, scarcely heaked, Sfc. 



8. PsBUDOECA. 9. Gbampus. 10. Phoc^na. 11. Neomeeis. 



n. Pectoral fin large, broad, rounded at the end; hand shorter than the 

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

 langes of index finger 5. 

 7. Oeca. 



in. Pectoral fin ovate, obliquely truncated; hand shorty than the arm- 

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

 cartilage. 



12. Belu&a. Dorsal none. Teeth deciduous. 

 12*. SoTAXiA, Dorsal distinct. Teeth permanent. 



IV. Pectoral fin small, ovate, rounded at the tip; hands shorter than the 

 arm-hones; carpal hones 5, small, immersed in u large cartilage; 

 phalanges of index finger 5. Dorsal none. 



13. MONOCEEOS. 



