Hector, — New Zealand Cetaceans. 109 



BERARDIUS ARNUXII. 



Porpoise WTiale. 



B. armixil (Duv.) Gray, I.e. 348, Hiiast, Trans. N.Z. Inst, II., 190. 

 Knox and Hector, Trans. N.Z. Inst. III., 128, V\. XVI. and XVII. 



Ear hones] PI. VL, 5a. and b. 



Teeth 2', doreal fin large, extended far back with a large boss in front 

 of it ; beak of skull sub-cylindrical, slender ; interraaxillaries linear, slender, 

 rather swollen on the sides of the blowers, but not reflected to form a crest ; 

 nasal bones swollen, as in Glohiocephalus ; maxillary bones, shorter exter- 

 nally than the intermaxillaiies, flat and expanded over the orbits ; teeth 

 triangular, sub-compressed, with base rugulose ; point acute and smooth 

 in the side of lower jaw close to tip, but not protruded through the gum; 

 pectoral fins triangular ; colour deep vel vety black, lighter beneath ; atlas, 

 second, third, and fourth cervicals anchylosed ; fifth and sixth free. 



Skull, cervical vertebrae, hyoid, clavicle and sternebrce, of a specimen killed 

 in Wellington harbour ; prepared by Dr. Knox. 



Lenffth 27 feet. 



Description of Plates. 

 Plate I. — Chjmenia ohscura. Gray. 



Side and upper view of skull, one-fifth nat. size. 

 Electra clancula, Gray. 



Side and upper view of skull, one-fifth nat. size. 

 Plate II. — Delphinus forsteH, Gray. 



Side and upper view of skull, one-fifth nat. size. 

 Clymenia novce-zealandice, Porster. 



Side and upper view of skull, one-fifth nat. size. 

 Plate III. — Dolichodoii layardii, Gray. One-eighth nat. size. 



1. Lower jaw, from above. 4. Right tooth, side view. 



2. „ ,, side view. 5. „ „ from above. 



3. ,, ,, front view. 

 Electra clancula, Gray. 

 Delphimis forsteri, Gray. 



(Reduced from PL XXIV., ''Voy. of Ereb. and Terr.") 

 Plate IV. — Epioilon cluUluimiensis. 



Side, lower, and upper views, one-eighth nat. size. 

 Plate V. — Epiodon cluUhamiensis. 



la. Side view of lower jaw. lb. Upper view of lower jaw. 

 One-eighth nat. size. 



w 



