. FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 37 



AMIA KOILOMATODON (Bleeker) 



Apogon koilomatodon Bleeker, Nat. Tijds. Nederland. Indie, vol. 4, 1853, 

 p. 134. Ternate. — Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, p. 234 

 (copied). — Weber, Siboga Exp., vol. 57, Fische, 1913, p. 222 (Seba, Savu 

 Island; Sanguisiapo, Sulu Archipelago; Nusa Laut). 



Amia koilomatodon Bleeker, Atlas Ichth. Ind. Norland., vol. 7, 1873-76, 

 p. 81, pi. (29) 307, fig. 1 (Singapore, Java, Sangir, Ternate, Batjan, 

 Amboina). — Fowler, Mem. Bishop Mus., vol. 10, 1928, p. 155 (note). 



Depth 2Y 2 to 2%; head 2% to 2%, width V/ s to 2. Snout 3% to 

 V/2 in head from upper jaw tip; eye 3 to 3%, greater than snout or 

 interorbital but becomes subequal with age; maxillary reaches 

 opposite % to % in eye, expansion V/ 2 to \% in eye, length 2 to 2}/% 

 in head; bands of fine villiform teeth in jaws, on vomer and palatines; 

 interorbital 4 to 43^, nearly level; preopercle ridge and edge denticu- 

 late, though former less so or with but few points in young; lower 

 posterior suborbital edge with few serrae with age. Gill rakers 5 + 16, 

 lanceolate, equal gill filaments or 2% in eye. 



Scales 24 or 25 in lateral line to caudal base and 4 or 5 more on 

 latter; 2 or three above, 6 below, 5 or 6 predorsal, 3 rows on cheek 

 to preopercle ridge; muzzle, including maxillary, preorbital and inter- 

 orbital naked. Scales with 15 to 17 basal radiating striae; 88 to 193 

 apical denticles with 1 to 10 transverse series of basal elements; 

 circuli fine. 



D. VI-I, 9, 1, second spine 1% to \% in total head length, first ray 

 \\i to 1H; A. II, 8, 1, second spine 2 to 2%, first ray 1% to \y 2 ; 

 caudal \y% to 1}{, moderately emarginate behind with rounded 

 lobes; least depth of caudal peduncle 2 x /§ to 2%; pectoral 1% to \}/2', 

 ventral V/2 to 1%. 



Brown above, paler to quite light below. Most examples show 

 median portion of each scale darker on back and upper surface of 

 body, producing a more or less regularly spotted appearance. Small 

 round neutral dusky spot, about size of or smaller than pupil on 

 opercle just above level of pectoral origin. In many examples a 

 variably distinct neutral dusky line from lower hind eye edge to angle 

 or preopercle ridge. Iris with neutral gray tinge. Neutral dusky 

 vertical band extends below bases of first three dorsal spines down to 

 median axis of body, its width equal to two scale exposures. At soft 

 dorsal origin a short neutral dusky vertical bar 1 or 2 scales wide at 

 first and over 1 more scale below so that not quite reaching lateral 

 line. Third neutral dusky transverse band inclined little forward, 

 from bases of last dorsal ra3^s, 2 scales wide and extends below lateral 

 line 1 scale. Sometimes median basal scale in lateral line on caudal 

 dark or emphasized as small dark spot. Spinous dorsal dark, usually 

 terminally. Fins all more or less dusky gray. Upper and lower 

 caudal edges usually narrowly neutral dusky. Often a neutral dusky 

 spot at base of last anal ray on tail, close, small and inconspicuous. 



