'"PONGO—PONTOPORIA. 557 
Pongo—Continued. 
New name for Troglodytes Geoffroy, 1812, which is preoccupied by Troglodytes 
Vieillot, 1806, a genus of Birds. ‘‘Es muss daher der Genus-Name Troglo- 
dytes, wenn man Gorilla und Chimpanze unter demselben vereinigen will, 
durch eine neue Bezeichnung ersetzt werden, fiir welche der alte Name Pongo 
sich am besten eignen dürfte." Species: Troglodytes gorilla Savage and Simia 
troglodytes Gmelin, from West Africa. 
Name preoccupied by Pongo Lacépéde, 1799. (See Pan Oken, 1816.) 
Ponthotherium (see Pontotherium). Sirenia, Halitheriidee. 
Pontistes Burmersrrer, 1885. Cete, Platanistidze. 
Anal. Mus. Nac. Buenos Aires (III), entr. x1v, 138-144, pl. 1, fig. 12, Dec., 1885. 
Type: Delphinus rectifrons Bravard, from the vicinity of the city of Paraná, 
Argentina. 
Name antedated by Palxopontoporia Doering, 1882, based on the same species. 
Extinct. Based on a cranium. 
Pontistes: zt ovri6r)5s, one who casts into the sea. 
Pontivaga AMEGHINO, 1891. Cete, Platanistide. 
Revista Argentina Hist. Nat., I, entr. 3a, 165-166, fig. 73, June 1, 1891. 
Type: Pontivaga fischeri Ameghino, from the upper Oligocene in the vicinity of 
the city of Paraná, Argentina. 
Extinct. 
Pontivaga: Lat. pontus, sea; vago, to wander—a ‘sea wanderer.’ 

Pontobasileus Lzripv, 1873. Cete, Basilosauride. 
Rept. U. S. Geol. Surv. Terr., I, 337, pl. xxxvii fig. 15, 1873. 
Type: Pontobasileus tuberculatus Leidy, which is supposed to have come from 
**some Eocene or Miocene formation of the Atlantic States" ( Alabama?). 
Extinct. Based on a fragment of a tooth. 
Pontobasileus: zóvros, sea; ffaGiAevs, king—‘king of the sea.’ 
Pontogeneus Lripy, 1852. Cete, Basilosauride. 
Proc. Acad. Nat. Sci. Phila., 1852, 52; Journ. Acad. Nat. Sci. Phila., 2d ser., VII, 
428, 1869 (synonym of Dorudon). 
Type: Pontogeneus priscus Leidy, from the Eocene of Ouachita, Louisiana. 
Extinct. Based on ‘the body of a cervical vertebra.’ 
Pontogeneus: zóvros, sea; yeved, race, offspring. 
Pontoleo Grocrn, 1841. Ferz, Pinnipedia, Otariide. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxiv, 164, 1841; THomas, Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, Feb. 1, 1895. 
New name for Platyrhynchus Cuvier, 1826, which is preoccupied by Platyrhynchus 
Desmarest, 1805, a genus of Birds. 
Pontoleo: Lat. pontus, sea; leo, lion—‘ sea lion.’ 
Pontoplanodes AMEGHINO, 1891. Cete, Platanistide. 
Revista Argentina Hist. Nat., I, entr. 4a, 255, Aug. 1, 1891. 
New name for Saurocetes Burmeister, 1871, which is preoccupied by Sauwro-cetus 
Agassiz, 1848, a genus of Basilosauride. 
Extinct. 
Pontoplanodes: zÓóvroc, sea; TAav dns, wandering a ‘sea wanderer.’ 
] , , 5 
Pontoporia Gray, 1846. Cete, Platanistide. 
Zool. Voy. H. M. 8. ‘Erebus & Terror,’ I, Mamm., 45, 46, tab. 29 figs. 1, 2, 1846. 
Pontoporus MAnscHaALL, Nomenclator Zool., Mamm., 11, 1873. 
Type: Delphinus blainvillii Gervais, from the mouth of the Rio de La Plata. 
Name preoccupied by Pontoporeia Kroyer, 1842 (emended to Pontoporia Agassiz, 
1846), a genus of Crustacea. (See Stenodelphis Gervais, 1847.) 
Pontoporia: ztovrozópeia, a Nereid, the sea traverser (from zóvrosz, sea; zÓpose, 
passage). 
