BELUGID^. 



93 



genus in the collection of the British Museum ; they were carefully 

 taken with calipers by Mr. Edward Gerrard. 



Length from end of nasal to 1 

 centre of occipital condyle J 



Length of nose 



of tooth- line 



of lower jaw 



Breadth at the notch 



at the orbit 



at temple above . . . . 



at middle of beak . . . . 



at intermaxillaries . , 



O. stenorhyncha. 



3616. 

 in. lin. 



35 



17 6 



13 6 



27 6 



10 6 



9 

 3 3 



in. lin. 



37 



18 6 

 14 

 30 

 11 



19 6 

 19 6 

 10 



3 3 



O. ca- 

 petisis. 



1065 ft, c. 

 in. lin. 



39 



22 6 



16 



31 



12 



20 



20 



11 



4 6 



O. lati- 

 rosfris. 



361a. 

 in. lin, 



33 



17 

 13 

 26 

 10 



18 

 18 



9 6 

 3 3 



O. pacificJO-inter- 

 medta. 



1065 a. 

 in. lin. 



18 



14 6 



29 6 



12 6 



21 



20 



10 



3 6 



362 a. 

 in. lin. 



14 



8 6 



9 

 3 6 

 9 



2. OPHYSIA. 



Ophysia, Grmj, P. Z. S. 1870, p. 76 ; Si/nops. Whales Sf Dolph. p. 8. 

 Skull : — beak from the notch before the orbit the same length as 

 from the notch to the condyle ; width at the notch two-thirds the 

 entire length of the beak. Intermaxillaries very narrow, slightly 

 dilated in front ; brain-cavity broad ; occiput deeply concave. Lower 

 jaw very broad on the sides, very thick and solid in front. 



1. Ophysia pacifica. B.M. 



Ophysia pacifica, Grmj, P. Z. 8. 1870, p. 76. 



Delphinus globiceps, Grant, P. Z. S. 1833, p. 65. 



Delphinus orca, Eydoux, Mus. Paris. 



Orca capensis, Gray, Zool. JEreb. ^ Terr. p. 34, tab. 9, not Cat. Seals 



^ Whales, p. 283 ; Gervais, Osteogr. Get. t. 48. fig. 1. 

 Orca (Ophysia) capensis. Gray, Synops. WJiales 8r Dolph. p. 8, tab. 9 



(skull). 



Inhab. North Pacific {Qapt. Delville, B.N.). 

 Skull, from the Zoological Society's collection. 



Family 14. BELUGID^. 



Beluginae, Flower, Trans. Zool. Soc. vi. p. 115. 

 Head rounded in front. Teeth in both jaws more or less early 

 deciduous, rarely wanting or, rather, not developed. Back without 

 any dorsal fin. Pectoral fin small, ovate. SkuU with the lateral 

 expansion of the maxilla over the orbit, and the side of the beak, 

 shelving downwards. Fingers short ; index and middle fingers 

 nearly the same length, the rest rather shorter ; phalanges 2, 5, 6,4,3. 

 Cervical vertebrje generally free ; the second with a large dorsal 

 process. 



