FISHES OF THE PHHJPPINE ISLANDS AND ADTACEXT SEAS 763 



Arius sona Day, Proc. Zool. Soc. London, p. 70S, 1871 (note) ; Fishes of India, 

 pt. 3, p. 462, pi. 105, fig. 2, 1877 (Bombay).— Bavean, Fresli Water Fislies 

 India, p. 143, 1S77 (Bengal).— Day, Fauna British India, Fishes, vol. 1, 

 p. 179, 1889. 



Tachysurus sona Fowler, Joiirn. Bombay Nat. Hist. Soc, vol. 32, p. 255, 1927 

 (Bombay) ; Mem. Bishop Mus., vol. 10, p. 61, 1928 (note). 



Bagrus gagoridcs Valenciennes, Hist. Nat. Poiss., vol. 14, p. 441, 1829 (type 

 locality: Bengal). 



Arius gagorides Bleeker, Verb. Batav. Genootsch. (Bengal), vol. 25, p. 56, 

 1853 (reference). — Blyth, Journ. Asiatic Soc. Bengal, vol. 27, p. 285, 

 1858 (Calcutta). — Guntheii, Cat. Fishes British Mus., vol. 5, p. 140, fig. 

 (teeth), 1864 (Calcutta).— Bavean, Fresh Water Fishes India, p. 143, 

 1877 (Hoogly River). — DIjncker, Mitt. Naturhist. Mus. Hamburg, vol. 

 21, p. 174, 1904. — Weber and Beaufort, Fishes Indo-Australiau Archi- 

 pelago, vol. 2, p. 288, 1913 (copied). 



Tachysurus gagoroides Fowler, List Fish. Malaya, p. 49, 1938 (reference). 



Bagrus trachipomiis Valenciennes, Hist. Nat. Poiss., vol. 14, p. 443, 1839 (type 

 locality: None = Bengal). 



Arius trachipomus Bleeker, Verb. Batav. Genootsch. (Nal. Ichth. Bengal), 

 vol. 25, p. 58, 1853 (reference). 



Netuma netuma (not Valenciennes) Day, Fishes of Malabar, p. 175, 1865. 



Arius graeffei Kneh and Steindachner, Sitz. Ber. Akad. Wiss. Wien, math.- 

 nat. Kl., vol. 54, p. 383, fig. 12, 1866 (type locality: Samoa).— Gunther, 

 Journ. Mus. GodefEroy, pt. 16, p. 373, 1909 (copied). 



Depth 5; head 3% to 3%, width 1% to II/5. Snout 2^8 to 3 m 

 head; eye 6 to 61^, 2 to 2l^ in snout, 2% in interorbital ; mouth 

 width l%o to 2 in head; maxillary barbel reaches % to % in pec- 

 toral, outer mental %, inner mental % or to pectoral origin; bands 

 of villiform teeth in jaws of about 5 or 6 transverse irregular series; 

 on palate 2 small closely approximated patches of villiform teeth 

 and 2 large rounded posterior areas more separated; interorbital 

 little elevated convexly, width 21^ to 2^/2 in head; head above and 

 occiput striate; occipital fontanel not quite reaching base of keeled 

 occipital buckler, basal width of which 1% its length, though bony 

 bridge complete to dorsal. Gill rakers 5 + 10, lanceolate, II/4 in gill 

 filaments, which I14 in eye. 



Skin smooth. Lateral line complete, midway along side. 



D. I, 7, compressed spine with antrorse serrae along front and hind 

 edges, first ray I14 to II/3 in head; A. iv, 11, first branched ray l%o 

 to 2; caudal forked, ly^o to 1%; least depth of caudal peduncle 

 3% to 41/4; pectoral 1%, compressed spine with outer and inner 

 edges with antrorse serrae, 10 along inner edge; ventral 1% to 2%. 



Leaden gray, little paler below. Iris gray. All fins dusky to 

 blackish terminally. 



India, East Indies, Polynesia. 



U.S.N.M. No. 72536. Batavia. April 2, 1909. Bryant and Palmer. Length, 

 61-205 mm. 2 examples. 



