64 ATHERINID^: SILVERSIDES 



XXX. ODONTESTHES Evermann and Kendall, 1906. 



Odontesthes Evermann and Kendall, Proc. U. S. Nat. Miis., 31, 94, 1906; Hubbs, 

 Proc. Acad. Nat. Sci. Phila., 69, 308, 1918. 

 Orthotype. — Odontesthes perugi^ Evermann and Kendall. 

 Range. — Argentina and Uruguay. 



101. Odontesthes perugiae Evermann and Kendall, 1906. 

 (Plate III, Fig. 11) 

 ? Atherinichthys vomerina Perugia, Ann. Mus. Geneva, 30, 621, 1891; Berg, 

 An. Mus. Nac. Buenos Aires, 4, 26, 1895 (not Atherina vomerina Cuvier 

 and Valenciennes). 

 Odontesthes perugi^ Evermann and Kendall, Proc. U. S. Nat. Mus., 31, 94, fig. 3, 

 1906. 

 Type-locality. — Argentina ("locality label lost; probably from fresh water"). 

 Range. — Argentina; not definitely known. 



102. Odontesthes platensis (Berg), 1895. 



Atherinichthys platensis Berg, An. Mus. Nac. Buenos Aires, 4, 27, 1895. 



Odontesthes platensis Evermann and Kendall, Proc. U. S. Nat. Mus., 31, 



95, 1906. 

 Type-locality. — Mar del Plata. 

 Range. — Argentina. 



As Evermann and Kendall note, this species is probably congeneric 

 with O. PERUGLE. The elongation of the jaw^s, and of the abdominal 

 region of the body is, however, not described. 



103. Odontesthes argentinensis (Cuvier and Valenciennes), 1835. 

 Atherina argentinensis Cuvier and Valenciennes, Hist. Nat. Poiss., 10, 472, 1835; 

 Jenyns, Zool. Beagle, 4, (Fishes), 77, 1842. 

 [Basilichthys] argentinensis Girard, U. S. Nav. Astron. Exp. 2, 237, 1860. 

 Atherinichthys argentinensis Giinther, Catalogue Fishes Brit. Mus., 3, 405, 



1861 (and of most later authors). 

 Chirostoma argentinensis Eigenmann and Eigenmann, Proc. U. S. Nat. Mus., 



14, 66, 1891. 

 [Odontesthes] argentinensis Hubbs, Proc. Acad. Nat. Sci. Phila., 69, 308, 



1918. 

 Type-locality. — Montevideo. 

 Range. — Uruguay and Argentina. 



The posterior position of the spinous dorsal and the rather large 

 scales (compared with other species of temperate South America) would 

 seem to indicate close relationship with Odontesthes perugi^. The 

 species is not described as having vomerine teeth, however. 



XXXI. AUSTROMENIDIA Hubbs, 1918. 



Atherinichthys Giinther, Catalogue Fishes Brit. Mus., 3, 402, 1861 (in part; 



not Atherinichthys Bleeker = Chirostoma Swainson). 

 Basilichthys of authors (not of Girard, Proc. .4cad. Nat. Sci. Phila., 198, 1854. 



Orthotype, Atherina microlepidota Jenyns. Basilichthys Girard = Gas- 



TROPTERUS Cope = PiSCIREGIA Abbott"). 



