FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 515 



Acipenser mcdirostris Ayres, Proc. California Acad. Sci., vol. 1, p. 15, 1854 

 (type locality: San Francisco).— Kirsch and Fordice, Proc. Acad. Nat. Sci. 

 Philadelphia, 1889, p. 249, 1890 (San Francisco).— Jordan and Evermann, 

 U. S. Nat. Mus. Bull. 47, pt. 1, p. 104, 1896 (compiled).— Berg, Fauue 

 Russie, Poiss., vol. 1, p. 287, pi. 8, fig. 3, 1911 (Hakodate and Aniwa Bay at 

 Korsakowsk, Saghalin I.). — Soldatov and Lixdberg, Bull. Pacific Sci. 

 Fisher. Inst., vol. 5, p. 32, figs. 9-10, 1930 (Far East seas).— Taranetz, Bull. 

 Pacific Sci. Inst. Fisher. Oceanogr., vol. 11, p. 53, 1937 (reference). 



Acipenser (Antaceus) medirostris Dum^ril, Nouv. Arch. Mus. Hist. Nat. Paris, 

 vol. 3, p. 167, pi. 13, fig. 2, 1867 (San Francisco) ; Hist. Nat. Poiss., 

 Ganoides, vol. 2, p. 222, 1870. 



Acipenser (Antaceus) agassizi Dum£;ril, Nouv. Arch. Mus. Hist. Nat. Paris, 

 vol. 3, p. 181, pi. 11, fig. 2, 1867 (type locality: San Francisco) ; Hist. Nat. 

 Poiss., Ganoides, vol. 2, p. 237, 1870 (type). 



Acipenser (Antaceus) a]exa)idri Dumeril, Nouv. Arch. Mus. Hist. Nat. Paris, 

 vol. 3, p. 183, pi. 15, fig. la-b, 1867 (type locality: San Francisco) ; Hist. 

 Nat. Poiss., Ganoides, vol. 2, p. 239, pi. 15, fig. 1, 1870 (type). 



Acipenser (Antaceus) oligopcltis Dumeril, Nouv. Arch. Mus. Hist. Nat. Paris, 

 vol. 3, p. 184, pi. 15, fig. 2, 1867 (type locality: San Francisco) ; Hist. Nat. 

 Poiss., Ganoides. voL 2, p. 241, 1870 (type). 



Acipenser mikadoi Hilgendorf, Sitz. Ber. Naturf. Freunde Berlin, p. 98, 1892 

 (type locality: Tokyo nunkct, dnul)tless from Hokkaido). — Jordan and 

 Snyder, Joura. College Sci. Tokyo, vol. 15, p. 303, 1901 (Ishikari River, 

 Teshio, Mikawa). — ^^Schmidt, Pisces marinum orieutalium, p. 284, 1904 

 (Hakodate).— .loRDAN and Snyder, Proc. U. S. Nat. Mus., vol. 30, p. 398, 

 1006 (Ishigari River, Teshio and Mikawa streams, Hokkaido). — Izuka and 

 Matsuuea, Cat. Zool. Spec. Tokyo Mus. Vertebrata, p. 185, 1920 (Ishikari- 

 gavpa ) . 



Depth 6I/2 to 7; head 2>% to 2,%. Snout 2 to 2i/io in head, short, 

 rather sharp. 



Dorsal plates 7 or 8; laterals 34; ventrals 9. Plates well keeled, 

 with radiating striae, rather rugose; 4 to 6 plates behind dorsal; 2 

 to 4 plates behind anal; sides above, between series of large plates, 

 with smaller mostly stellate plates, 14 forming irregular row behind 

 dorsal series. Top of head long; cheeks with rough plates; opercle 

 rugose. 



D. IV, 31 to 36, fin height 31/3 in head; A. iii, 25 to 28; cauda^l 

 ll^ in head. 



Length, 1,200mm. (Jordan and Snyder.) 



Northern Japan. Also in the northeastern Pacific in California. 

 Hilgendorf says it reaches 1,525 imn. He gives snout 2i/^ in head, 

 moderately pointed ; barbel nearer eye than snout tip ; 10 dorsal plates, 

 30 or 31 laterals ; D. 39 to 43. Length, 967 mm. 



ACIPENSER KIKUCHII Jordan and Snyder 



Acipenser kikuchii Jordan and Snyder, Journ. College Sci. Tokyo, vol. 15, 

 p. 302, pi. 15, figs. 1-2, 1901 (type locality: Misaki, S'agami Bay); Proc. 

 U. S. Nat. Mus., vol. 30, p. 397, 1906 (type). 



