2. Globiocephalus Grayii, Burmeister, Ann. $ Mag. N. H. 

 1868, p. 52, t. 2. f. 2, 3. #a6. Buenos Ayres. 



** Black, or only slightly paler beneath. 



2. Globiocephalus macrorhynchus, Gray, 1. c. .320. 

 Hub. South Seas. 



See 1. Globiocephalus indicus, Gray, I. c. 322. Hub. 

 Bay of Bengal. 2. Globiocephalus Sieboldii, Gray, 1. c. 

 323. Hab. Japan. 



II. SphjErocephalus, Gray, 1. c. 323. 



Palate of the skull convex, shelving on the sides. Beak 

 oblong, of nearly the same width the greater part of its 

 height. 



1. Sphserocephalus incrassatus, Gray, 1. c. 324 

 (figures). Hab. British Channel, Bridport. 



Family XI. BELUGIL\E. 



Head rounded in front (or very shortly beaked). Teeth 

 in both jaws more or less early deciduous, rarely 

 wanting, or, rather, not developed. Back sometimes 

 with a compressed dorsal fin, often wanting. Skull 

 with the lateral expansion of the maxilla over the 

 orbit, and the side of the beak shelving downwards. 



* Dorsal fin distinct. Pectoral fin subelongate. 



I. Grampus, Gray, I. c. 230, 295, 393. 



Skull lateral; wings of the maxilla over the orbit hoii- 

 zontal. Interrnaxilla broad; triangle in front of the 

 blowers convex. Teeth conical; upper early deciduous. 

 Pectoral fin ovate, falcate. Cervical vertebra? anchylosed. 



t Triangle in front of the blowers elongate, produced in 

 front over the vomer. 



1. Grampus Cuvieri, Gray, 1. c. 295 (figure) 

 North Sea, Hampshire. 



Hab. 



1. Beluga catodon (Tab. 29. f. 3, tongue), Gray, I. c. 

 307, fig 61. Delphinus canadensis, T. 5, head false, with 

 beak. Hab. North Sea, mouths of rivers. 



2. Beluga Kingii (T. 7), Gray, I. c. 309. Hab. Aus- 

 tralia. 



III. Moxodon, Gray, I. c. 231, 310, 393. 



Lateral expansion over the orbit shelving down. Teeth 

 in both jaws very early deciduous. Male with one, rarely 

 two, very long, projecting, spiral tusks in the left side of 

 the upper jaw. Cervical vertebra? — first free, thin ; second 

 and third united by the spinal processes. 



1. Monodon monoceros, Gray, 1. c. 311. Hab. North 



Sea. 



Suborder VI. ZIPHIOIDEA. 



{Ziphiidte, Gray, /. c. 62, 326.) 



Head beaked. Nostrils two, united into a single trans- 

 verse or crescent-like blower on the centre of the back 

 of the crown. Teeth only in the front or side of the 

 lower jaw, fitting into pits in the upper one. Dorsal fin 

 falcate. Pectoral fin ovate, small, low down on the side 

 of the body ; fingers four- or five-jointed. Cervical ver- 

 tebrae united into one mass. 



Family XII. HYPEROODONTIDjE. 



(Hyperodontina, Gray, /. c. 327.) 



Blower lunate. Beak of the skull with a high crest on 

 each side above, formed by the elevation of the maxil- 

 lary bones in front of the blower. Teeth two or four, 

 in front of the lower jaw, conical. Cervical vertebrae 

 united into one mass. 



I. Hyperoodon, Gray, I. c. 327, 328. 



Beak of the skull bent downwards ; crest of the back of 

 the beak sharp-edged, above as high as the occiput. 



1. Hyperoodon butzkopf (T. 3), Gray, I. c. 330. H. 

 rostratum, T. 3. Hab. North Sea. 



ft Triangle in front of the blower short, broad. 



2. Grampus Richardsonii, Gray, I. c. 299. Hab. 

 Cape of Good Hope. 



** Dorsal fin none. Pectoral fin ovate, small. 



II. Beluga, Gray, I. c. 232, 306, 393. 



Lateral wing of the maxilla over the orbit shelving 

 downward. Teeth conical in both jaws, early deciduous. 

 Male without any spiral hornlike tooth. 



II. Lagenocetus, Gray, I. c. 327, 336. 



Beak of the skull straight, erect at the beak, very large, 

 flattened, higher than the occiput. 



1. Lagenocetus latifrons, Gray, I. c. 339. Hype- 

 roodon latifrons, T. 4. Hab. North Sea. 



Family XIII. EPIODONTID^E. 



(Epiodontina, Gray, /. c. 327.) 



Blower lunate. Skull — beak ? ; maxillaries simple, 



