416 PROF. W. H. FLOWER ON THE GENUS IMESOPLODON. 



Mesoplodon sower Mensis, Van Beneden^ M^m. Acad. Belgique, coll. in 8vOj t. xvi. (1863). 

 M. sowerbensis, Gervais and Van Beneden, Osteographie des C^taces, p. 392 (1877). 

 Micropteron bidens, Malm, " Hvaldjur i Sveriges Museer ar 1869," K. Svenska Vetenskaps-Akad. 

 Handl. 1871. 



Hah. Coast of Elginshire {Sowerby) ; Havre [Blainville) ; Ostend (Dumortier) ; Sale- 

 nelles, Calvados (E. Beslongchamps) ; Brandon Bay, Ireland [Andrews) ; Norway 

 {Malm). 



2. M. EUROP.^us (Gervais). 



Dioplodon ewroptBxis, Gervais, Zool. et Pal. frangaises, l'" edit. t. ii. Explic. No. 40 (1850). 



D. gervaisii, E. Deslongchamps, Bull, de la Societe Linnecnne de Normaudie, tome x. (1866). 



A single specimen found floating in the sea at the entrance of the British Channel 

 about 1840. The skull is now in the Museum. at Caen. It should be mentioned that 

 some doubts have been thrown upon the supposed distinctive characters between this 

 and the last species. 



3. M. DENsmosTRis (Blainville). 



Delphinus densirostris, Blainville, Nouv. Diet. d'Histoire Nat. 2nd edit, tome ix. p. 178(1817). 

 Mesodiodon densirostris, Duvernoy, Annales des Sciences Naturelles, ser. 3, t. xv. p. 59 (1851). 

 ZipMus seckellensis, Gray, Zool. E. & T. p. 28 (1846) ; KreflFt, P. Z. S. 1870, p. 426. 

 Dioplodon densirostris, Gervais, Zool. et Pal. frangaises, l" edit. t. ii. Explic. No. 40 (1850) ; Ann. 

 des Sciences Nat. ser. 3, t. xiv. p. 16 (1850) . 



Uai. Seychelles Islands (Duvernoy) ; South Africa (Mus. R. Coll. Surgeons) ; Lord 

 Howe's Island [Erefft). 



4. M. LATARDi (Gray). 



Ziphius layardi, Gray, P. Z. S. 1865, p. 358; Owen, Crag Cetacea, p. 12, pi. i. (1870). 

 Ziphius (Dolichodon) layardi, Gray, Cat. Seals and Whales Brit. Mus. p. 353 (1866). 

 Dolichodon layardii, Hector, Trans. Nev?-Zealand Inst. vol. v. p. 166, pi. iii. (1872). 

 Mesoplodon longirostris, Krefft, MS., M. giintheri, Krefft, MS., and Callidon giintheri, Gray, 



Ann. Mag. Nat. Hist. ser. 4, vii. p. 368 (1871). 

 Dolichodon traversii, Gray, Trans. New-Zealand Inst. vol. vi. p. 96 (1874). 

 Mesoplodon floweri, Haast, P. Z. S. 1876, p. 478. 



Hab. Cape of Good Hope [Layard) ; Near Sydney {Krefft) ; New Zealand {Haast) ; 

 Chatham Islands {Hector). 



Two skulls, an adult and a young specimen, of this well-established species were 

 brought home by the naturalists of the ' Challenger,' and will be described in detail by 

 Professor Turner in his Report on the Marine Mammalia collected during the expedition. 



5. M. HECTORi (Gray). 



Berardius arnuxii, Hector, Trans. New-Zeal. Inst. vol. ii. p. 27 (1870). 



Smaller Ziphioid jrAa/e,Knox& Hector, T. New-Zeal. Inst. vol. iii. p. 125, pis. xiii., xiv. &xv. (1871). 



