574 MR. W. R. B. OLIVER : REVIEW OF THE 



Mesoplodon LAYARDI. 



ZijjJiius layardi Gray, 1865, Proc. Zool. Soc. ]885, p. 358 (Cape 

 of Good Hope). Dolichodon layardi Gray, Hector, 1873, Trans. 

 N.Z. Inst. vol. V. p. 166, pi. 3. Mesoplodon layardi Gray, Hector, 

 1873, Ann. Mag. Nat. Hist. ser. 4, vol. xi. p. 106; id. 1878, 

 Trans. N.Z. Inst. vol. x. p. 341 ; Flower, 1878, Trans. Zool. Soc. 

 vol. X. p. 416; Turner, 1880, ' Challenger ' Rep., Zool. vol. i. 

 ,pt. 4, p. 2, pis. 1-3 ; Waite, 1912, Rec. Cant. Mus. vol. i. p. 326, 

 pi. 62; id. 1912, Guide Whales k Dolph. N.Z. p. 16, pi. 4. 

 Mesoplodon -jloioeri von Haast, 1876, Proc. Zool. Soc. 1876, p. 478 ; 

 id. 1877, Trans. N.Z. Inst. vol. ix. p. 442, pis. 25, 26. Dolichodon 

 traversii Gray, 1874, Trans. JST.Z. Inst. vol. vi. p. 95. 



The Strap-toothed Whale has been recorded from South Africa, 

 Australia, and New Zealand. 



Chatham Island. — Mandible described by Hector (1873) and 

 Turner. 



Great Barrier Island. — Skull in Canterbury Museum. Teeth 

 meeting over the upper jaw. 



Napier. — Teeth in Otago Museum. 



Marlborough. — Skull in Dominion Museum, Wellington : 

 acquired 1879, Length of teeth following curvature, 34 cm. ; 

 greatest width, 60 mm. Denticle 7 mm. high, 10 mm. along 

 base-line. 



Saltwater Greek, north of Banks Peninsida. — Stranded 16th 

 March, 1874. Skeleton in Canterbury Museum. Described by 

 von Haast as the type of M. flowert. Vertebrae: 0. 7, D. 10, 

 L. 10, Ca. 19 = 46. Three cervicals fused. Ribs 10, of which 7 

 are two-headed. Sternum of 4 segments. Scapula with broad 

 acromion and narrow coracoid. Phalanges : 2, 5, 5, 4, 3. 



Lyttelton Rarhour. — Specimen sti-anded at Allendale, 22nd 

 March, 1912. Half cast in Canterbury Museum. Exterior 

 described by Waite. 



Locality not stated. — {a) Skull in Dominion Museum, Wel- 

 lington. Length, 94*5 cm. ; breadth, 41 cm. ; mandible length, 

 80 cm. ; symphysis, 22 cm. Basirostral groove deep. (Teeth 

 missing.) (h) Skelton in Dominion Museum. Basirosti'al groove 

 shallow. Length of skull, 61 cm. ; of mandible, 52 cm. Yerte- 

 brse : C. 7, D. 9, L. 12, Ca. 16 = 44. Two cervicals fused. Ribs 9, 

 of which 7 are two-headed. Sternum of 3 segments. I have 

 identified this specimen from cranial characters. It is from a 

 young animal, and the teeth are small and triangular. They only 

 differ from those of M. grayi in being strongly incurved. 



Paikea, gen. n. 



I propose this name for those species of Ziphioid Whales with 

 the cranial characters of Mesoplodon and two terminal teeth in 

 the lower jaw. Type, Berardius hectori Gray. The only other 

 species that can be referred to this genus is Mesoplodon onirum^ 



