ZIPHIUS. MESOPLOUON. 17 



24. cavirostris. {/.iplnus), Cuv. Oss. Foss, 1823, v. 2nd. ec], p. 353. 



Gio^r. Distr. All seas. 



Genl. Char. Those of the genus. 



Color. Spec, from Nice. "Steel gray with nnnierous irregular 

 white streaks, beneath white." 



Measurement. <:. Total length 16 feet. 



Color. Specimen supposed to be of the same species taken at 

 Warrington, New Zealand, vide Trans. Zool. Soc, 1889, p. 241. 

 Upper parts, dorsal and flippers and upper part of flukes, purple 

 black; sides of head before eye, and upper lip, dark brown 

 shading below into the white of the throat. Lower jaw dark brown; 

 throat anteriorly brownish. Under side of flukes white. Small 

 white area from angles of mouth backward. Three oblique folds 

 each side of the throat. 



Measurements. Total length. 15 feet 11 111.; dorsal, 8 in.; widths 

 at bases, i.i; flipper on lower borilt-r, 1.7; width, 5.5. 



l.'i. 31es()i>lo(loii. 



Mesoplodon. Gerv. .\nn. Scien. Nat., 1850, 3rd. ser. xiv., p. 16. Type 

 D. soiccrbiensis. Blainv. 

 Mandible with a compressed pointed tooth on either side at some 

 distance from anterior extremity directeti upwards, sometimes back- 

 wards and frequently of large size. Rostrum long, narrow; mesoth- 

 moid ossified in old animals, coalescing with adjacent bones. Region 

 about nares like Hyperocidon, the nasals narrower and more sunken. 

 Vertebra', 46 to 48. 



Fig. 5. Mesoplodon oensirostris. Skull. 



From Flower and Lydekkcr "Mammals living and extii 



