XXXI. AUSTROMENIDIA 67 



108. Austromenidia gracilis (Steindachner), 1898. 



Chirostoma gracile Steindachner, Zool. Jahrb., Suppl. 4, 314, 1898; Bol. Mus. Nac. 

 Chile, 5, 186, 1913 (not Atherinichthys gracilis Giinther). 

 Type-locality. — Cumberland Bay, Island of Juan Fernandez. 

 Range. — Juan Fernandez Island, off Chile. 



This species seems to be an insular representative of A. laticlavia. 

 The name gracilis may not be eligible, as Chirostoma is the same as 

 Atherinichthys. 



109. Austromenidia brevianalis (Giinther), 1880. 



? Atherinichthys incisa Kner, Reise Novara, Fische, 223, pi. 9, fig. 1, 1865 (not 



Atherina incisa Jenyns). 

 Atherinichthys brevianalis Giinther, Rept. Voy. Challenger, 1, pt. 6 (Shore 

 Fishes), 25. 1880. 

 Type-locality. — Valparaiso, Chile. 

 Range. — Coast of Chile. 



A. brevianalis has larger scales than any other Pacific species of 

 the genus. It has the anal rays rather few in number, as in mauleana 

 and itatana. A. incisa of Kner (not Jenyns) is probably based on the 

 same species, also having the scales comparatively large and the anal 

 rays few. 



110. Austromenidia mauleana (Steindachner), 1869.-^*- 



Chirostoma mauleanum Steindachner, Ann. Naturhist. Hofmus. IVien, 11, 231, 

 1896; Zool. Jahrb., Suppl. 4, 313, 1898. 

 Menidia mauliana Thompson, Proc. U. S. Nat. Mus., 50, 465, 1916. 

 Type-locality. — River Maule, Chile. 

 Range. — Rivers and possibly coast of Chile. 



A. MAULEANA has the gill-rakers much fewer in number than in 

 typical species of Austromenidia. 



111. Austromenidia itatana (Steindachner), 1896. 



Chirostoma itatanum Steindachner, Ann. Naturhist. Hofmus. IVien, 11, 232, 1896. 



Type-locality. — Itata River, Chile. 

 Range. — Chile, known only from the type-locality. 



Judging from Steindachner's description, A. itatana is closely 

 related to A. mauleana. 



112. Austromenidia nigricans (Richardson) 1844.'^*- 



Atherina nigricans Richardson, Voy. Erebus and Terror, Fishes, 77, pi. 42. 

 figs. 13-18. 

 Atherinichthys nigricans Giinther, Catalogue Fishes Brit. Mus., 3, 403, 1861 ; 



Smitt, Bih. Sven. Vet.-Akad., 24, pt. 4, No. 5, 29. pi. 4, fig. 29, 1898. 

 Type-locality. — Falkland Islands. 

 ? Atherinichthys laticlavia Giinther, Catalogue Fishes Brit. Mus., 3, 403, 1861 



(specimen from Falkland Island only). 

 Atherinichthys alburnus Giinther, Catalogue Fishes Brit. Mus., 3, 403, 1861 ; 

 Cunningham, Trans. Linn. Soc. London, 27, 471, 1871. 

 Menidia alburnus Thompson, Proc. U. S. Nat. Mus., 50, 423, 1916. 



