214 Records of the S.A. Museum 



tooth was undoubtedly fmictional, and as that ()f the female of the species is 

 smaller and said not to cul tlic ji'iiiii, the mandibU- under examination may be 

 regarded as that of a male. 



The jaw and tooth are illustrated on plate iii, ti^'. 7 and 8, 

 It is this species in which the ]n-esence of small teeth in the npj^er jaw of 

 both sexes was demonstrated by von Haast. 



This whale has been freely stranded on the Chatham Islands, and examples 

 are also known from New Zealand and Patagonia. It is listed l)y Ogilby as from 

 New South Wales, but has not been jn-eviously recorded from South Australia. 



PRINCIPAL REFERENCES. 

 Additional to Forbes, Proc. Zool. Soc, 1893, p. 227, 229. 



Mesoplodon layardii Gray. 



MesopJoclon hiijardi Flower, T.Z.S., viii, 1874, p. 211 and x, 1878, p. 416; Hector, 

 T.N.Z. Inst., X, 1878, p. 341 ; Turner, CUialL, Rep. i, 1880, p. 2-26, pi. i-iii ; 

 De Vis (Jaggard), P.R.8., QueensL, i, 1884, p. 58, and 1885, p. 174, pi. xix ; 

 Flower, List Cetacea, Brit. Mus., 1885, p. 11 ; Sutton, P.Z.S., 1885, p. 440, 

 fig. 7, 8; Trimen, T.S.Afr. Phil, Soc, v, 1893, p. 295; Trouessart, Cat. 

 Mamm., ii, 1898, p. 1067; Sclater, Mamm. S. Afr., ii, 1901, p. 193, fig. 144; 

 Waite, Rec. Cant. Mus., i, 1907, p. 326, pi. Ixii; FitzSimons, Nature, July, 

 1907, p. 247, fig. 1, 2, and Knowledge, August, 1907, p. 173 and figs. 



Mesoplodon thomsoni, Kretft, MS. in Ogil. Cat. Aust. Mamm., 1892, p. 71. 



Mesoplodon grayi Haast. 

 Mesoplodon hidens Ven Ben., Mem. Conr. Acad. Belgique, 1888 (fide Trouessart). 



Explanation of Plate ii. 



Fig. 1 Skeleton of Mesoplodon laiiardii dray (one-tenth natural size). 



Explanation of Plate iii. 



'Fig. 2. Skull of Mesoplodon Utijurdii Gray, from the front, showing the 



disposition of the mandibular teeth (one-sixth natural size). 



Fig. 3. Skull, from behind (one-sixth natural size). 



•Fig. 4. Skull, from above (one-eighth natural size). 



Fig. 5. Skull, from beloAv (one-eighth natui-al size). 



Fig. 6. Tooth of left ramus, outside aspect (five-sevenths natural size). 



Fig. 7. Right ramus of mandible of Mesoplodon f/rai/i Haast (one sixth nat. size). 



Fiir. 8, Tooth (five-sev(^nths natural size). 



