120 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Ioamia, 7 new subgenus 



Type.— Apogonichthys gracilis Bleeker. 



Diagnosis. — Body slender, depth 3 to 3%. Dark median longitu- 

 dinal band on side of body. 



ARCHAMIA GRACILIS (Bleeker) 



Apogonichthys gracilis Bleeker, Nat. Tijds. Nederland. Indie, vol. 10, 1856, 

 p. 371. Ternate. — Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, p. 246 

 (copied). — Karoli, Termesz. Fuzetek, Budapest, vol. 5, 1882, p. 152 

 (Sarangoon, Singapore). 



Amia gracilis Bleeker, Atlas Ichth. Ind. Neerland., vol. 7, 1873-76, p. 102 

 (Ternate); vol. 8, 1S77-7S, pi. (65) 343, fig. 2. 



Apogonichthys nudus Regan, Journ. Bombay Soc. Nat. Hist., vol. 16, 1905, 

 p. 321, pi. 3, fig. 6. Karachi. 



Apogonichthys menlalis Evermann and Seale, Bull. Bur. Fisher., vol. 26, 

 1906 (1907), p. 74, fig. 10. Bacon, Sorsogon. 



Depth 3 to 3%; head 2% to 3K, width 2% to 2%. Snout 4^ to 

 43^ in head from snout tip; eye Z]/i to 3%, greater than snout or 

 interorbital ; maxillary reaches M to ^ in eye, expansion 2% to 3, 

 length 2% to 2^ in head; teeth villiform, in bands in jaws and few 

 weak ones on vomer and palatines indistinctly visible and feeble; 

 interorbital 4 to 43^, very slightly convex; peropercle ridge and edge 

 entire. Gill rakers 9 + 20, finely lanceolate, twice gill filaments or }/§, 

 of eye. 



Scales 22 in lateral line to caudal base and 4 more on latter; 2 above, 

 6 below, 5 predorsal, 2 rows on cheek; head naked, except cheeks and 

 opercles, venulose over suborbitals. Lateral line of rather slender 

 tubes, well exposed. Scales with 4 or 5 basal radiating striae; 24 to 

 43 weak short apical denticles; circuli moderate. 



D. VI-I, 9, 1, third spine 2 x /i to 2% in total head length, first ray 

 \ z /i to \%\ A. II, 12, 1, second spine 3% to ?>%, second ray 2}/$ to 

 2}/i\ caudal 1^ to l^, well forked, lobes slender and pointed; least 

 depth of caudal peduncle 2% to 3)4; pectoral \% to 1)4', ventral 2 

 to2}/ 8 . 



Pale brown generally, with silvery white reflections, especially about 

 head and chest where also pale blue to violet or lilac tints. At snout 

 above brown band given off each side over eye. Broad brown band 

 along side of snout, through eye. On postocular pale or whitish 

 horizontal band back over shoulder but not passing beyond first 

 dorsal, margined with brown above and below which often with dark 

 or small blackish spot in each behind level of pectoral origin in ver- 

 tical. Fins all pale brownish. 



Karachi, East Indies, Philippines. 



(D. 5360). Limbones Cove, Manila Bay. In 12 fathoms. February 8, 1909. 

 Length 37 to 62 mm. 8 examples. 



M 6 s, arrow, with reference to the narrow or slender body; Amia. 



