CETACEA OF THE NEW ZEALAND SEAS. 6Q9 



figured by Van Beneden and Gervais (p. 389, pi. 23). (5) Skeleton 

 in British Museum. 



Otago Peninsula. — 1840. Mandible in Otago Museum. Teeth 

 two in each ramus. 



New Zealand {loithout locality stated). — (a) Skeleton in Paris. 

 Museum sent by von Haast. Figured by Van Beneden and 

 Gervais (pis. 21 tis, 23 his). (b) Skull in U-S. National 

 Museum, Washington. Measurements given by True. 



Mesoplodon. 



Jfesoplodon Gervais, 1850, Ann. Sci. Nat. ser. 3, vol. xiv. p. 16 ;, 

 type, Delphinus sotve7'be?isis ^la,invi\[e . Dioplodon Gervais, 1850, 

 Comptes jRendus, vol. xxxi. p. 512 ; type, Delphinus densirostris 

 Blainville. Oidodon von Haast, 1876, Proc. Zool. Soc. 1876, p. 457;. 

 type, Mesoplodon grayi von Haast. Dolichodon Gray, 1866, Oat. 

 Seals di, Whales Brit. Mus. p. 353 ; type^ Zijjhius layardi Gray. 



For an account of the species of this genus, see Forbes, Proc. 

 Zool. Soc. 1893, p. 216, and Flower, 1872, Trans. Zool. Soc. 

 vol. viii. p. 211. 



Mesoplodon bowdoini. (PI. III. figs. 1-3; PI. IV. figs. 1-3.) 



Mesoplodon howdoini Andrews, 1908, Bull. Amer. Mus. Nat. 

 Hist, vol. xxiv. p. 203, pi. 13 (New Zealand). 



This species is now known from two skeletons : — 



(1) Neio Brighton Beach. — 1904. Skeleton in American 

 Museum of Natural History, New York. Described by Andrews. 



Maxillary foramina approximately level with foramina in pre- 

 maxiliaries. Basirostral groove absent. Anterior margin of teeth 

 posterior to hinder edge of mandibular symphysis. Vertebrae : 

 0. 7, D. 10, L. 9, Oa. 20=46. First three cervicals ankylosed. 

 Chevrons 9, Ribs 10, of which 7 are two-headed. Sternum of 

 four segments. Scapula with superior margin of acromion over- 

 lapping the coracoid border. Phalanges : 0, 4, 3, 3, 2. (Andrews.) 



(2) New Zealand. — Skeleton in Dominion Museum, Wellington. 

 This being the second specimen of the species known, a detailed 

 description will be given : — 



Skull : Length 72 cm., of rostrum (from outside anteorbital 

 notch) 43'5 cm. ; breadth of skull at squamosals 33 cm., at orbits 

 31*8 cm. ; base of rostrum 12 cm. Temporal fossae 9'5 x 6*5 cm. 

 Height from vertex to lower border of pterygoids 30*2 cm., of 

 rostrum at anterior end of pterygoids 8" 2 cm. (PI. III. figs. 1—3.) 



Maxillary foramina 3 on right side, 2 on left, abou.t 1 cm, in 

 advance of the premaxillary foramina (1 on each side). Rostrum 

 solid. Contour of upper edge of rostrum straight for two-thirds 

 of its length, then slightly depressed ; of lower edge parallel with 

 upper for the firjit third, then sloping upwards for the middle 

 third, at 14 cm. from apex its height being 5 cm., then gradually 

 narrowing to apex. A prominent ridge on each side of the 



