132 U.S. NATIONAL MUSEUM BULLETIN 246 



parisons]; 1885, List Cetacea Brit. Mus., p. 11 [type an articulated 



skeleton Brit. Mus., 1677a-76.2.16.2; received in exchange from the 



Wellington Museum, New Zealand]. 

 Mesoplodon Layardi, Lahille (not Gray), 1905, Rev. Jardin Zool., Buenos 



Aires, 1905, p. 97 [S. Atlantic: Argentina (Bahia Nueva, Chubut)]; 



1914, Enumeracion y zoogeografia de los mamiferos de la Republica 



Argentina, p. 32 [S. Atlantic: Falkland Islands, South Africa (Cape of 



Good Hope)]. 

 [?] Mesoplodon [sp.] Bini, 1951, Boll. Pesca, Piscic. Idrobiol. Minist. 



Agric. For., (27), 6(1): 5, figs. 1-4 (animal) [S. Pacific: Chile (Iquique, 



Tarapaca); external characters; comparisons]. 



Types: Three skulls, Canterbury Museum, Christchurch, New Zealand; 

 received from W. Hood. 



Type locality: Waitangi Beach, Chatham Island, New Zealand. 



Distribution: In Indian Ocean: from South Africa and Australia; 

 in South Pacific : from New Zealand to the coast of Chile ; in South Atlantic : 

 from the Argentine coast and Falklands to South Africa; in North Atlantic : 

 recorded from the Netherlands coast (Boschma, 1950, Proc. Kongl. 

 Nederlandsche Akad. Wet., 53: 779). 



Mesoplodon ginkgodens Nishiwaki and Kamiya 



Mesoplodon densirostris Ogawa (not Blainville), 1938, Anat. Inst. Kaiserl. 

 Japan Univ. Sendai., 21 : 173 [work not seen; N. Pacific: Japan]. 



M[esoplodon] bidens, Nishiwaki (not Sowerby), 1957, Coll. Rep. Tokyo 

 Univ. Press, p. 151 [N. Pacific: Japan; reidentification of the M. 

 densirostris of Ogawa]. 



Mesoplodon ginkgodens Nishiwaki and Kamiya, 1958, Sci. Rep. Whales 

 Res. Inst., 13: 53-83 (name, p. 77), figs. 1, 2, 4 (animal), fig. 5 (fluke), 

 figs. 7, 9-12 (vertebrae, sternum, pectoral limb bones, hyoid), fig. 13 

 (tooth), pis. 1-5 (head and skull), pis. 6-9 (skeletal parts), pis. 10, 11 

 (teeth), pis. 12-16 (skulls of Mesoplodon spp.), pi. 17 (teeth of Meso- 

 plodon spp.). — Nishiwaki and Kamiya, 1958, Norsk Hvalf.-Tid., 47: 

 440 [republication of original description]. — Moore and Gilmore, 1965, 

 Nature, 205(4977): 1239 [N. Pacific: U.S.A. (Delmar, 15 miles north 

 of San Diego, California) ; characters ; comparisons ; Mesoplodon hotaula 

 Deraniyagala a synonym]. 



Mesoplodon hotaula Deraniyagala, 1963, Ceylon today, 12(3): 13, pi. 

 figs. 1, 2 (head), 3 (skull), 4 (mandible) [Indian: Ceylon (type local- 

 ity: Ratmalana near Colombo); type, female, skull, dorsal fin, flukes, 

 and plaster cast of head, Colombo Museum Z.W. (Zoological Survey) ; 

 washed ashore Jan. 26, 1963]. — Deraniyagala, 1963, Spoila Zeylandica, 

 30(1) : 84 [characters].— Moore and Gilmore, 1965, Nature, 205(4977) : 

 1240 [type examined; regarded as identical with ginkgodens Nishiwaki 

 and Kamiya]. 



