110 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Head rather large. Teeth in villiform bands in jaws, on vomer 

 and palatines. Preopercle ridge with flat spine at angle, otherwise 

 entire; preopercle edge often with minute serrae. Gill rakers 13 to 

 16 on lower branch of first arch. Scales large, 22 to 24 in lateral line 

 to caudal base. Lateral line complete. Dorsals separate, spinous 

 fin with 6 spines and soft fin with spine and 9 rays. Anal with 2 

 spines and 13 to 17 rays. Caudal emarginate. 



This genus is known chiefly for its long anal fin. Most all the 

 species studied below with a black basal caudal spot. 



ANALYSIS OF THE SPECIES 



a 1 . Archamia. Body deeper, depth less than 3. 

 b l . No broad, dark, transverse median band. 



c 1 . Short, vertical, dark bar behind gill opening usually present bleekeri 



c 1 . No short, vertical dark bar behind gill opening ever present. 



d l . Median dark predorsal line, second dark line from above snout to 



last dorsal rays, third from snout nearly to caudal buruensis 



d 2 . No dark longitudinal lines lineolata 



b 2 . Broad, dark, median transverse band from soft dorsal to belly_zosterophora 



a 2 . Ioamia new subgenus. Body slender, depth 3 to 3%; dark median lateral 



longitudinal band gracilis 



Subgenus Archamia Gill 



Body deep, depth less than 3. Species seldom with dark median 

 longitudinal band. 



ARCHAMIA BLEEKERI (Gunther) 



Apogon bleekeri Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, p. 245. 



Amboyna. 

 Archamia bleekeri Fowler, Journ. Acad. Nat. Sci. Philadelphia, ser. 2, vol. 12, 



1904, p. 519 (Padang, Sumatra). — Evermann and Seale, Bull. Bur. 



Fisher., vol. 26, 1906 (1907), p. 75 (Bacon and San Fabian). 

 Apogon macropterus (not Ctjvier) Bleeker, Nat. Tijds. Nederland. 



Indie, vol. 2, 1851, p. 168 (Padang). 



Depth 2)£ to 2%; head 2% to 2^, width 2^ to 2%. Snout 4% 

 to 5 in head from snout tip; eye 3 to 33^, greater than snout or 

 interorbital; maxillary reaches half way in eye, expansion 2% to 2%, 

 length 2 in head; teeth villiform, in bands in jaws, on vomer and 

 palatines; interorbital 4 to 4}^, preopercle ridge entire with broad 

 flat spine at angle, lower edge and around angle minutely serrate, 

 upper hind edge entire. Gill rakers 6 + 13, lanceolate, greatly longer 

 than gill filaments or 1% in eye. 



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

 2 above, 6 below, 6 predorsal, 2 rows on cheek to preopercle ridge; 

 muzzle, including maxillary, suborbitals and interorbital, naked. 

 Tubes in lateral line large, well exposed, each with small basal auxiliary 

 scale. Scales with 13 to 18 basal radiating striae, with scalloped edge 

 to scale; 75 to 80 small apical denticles, with 1 or 2 transverse series 

 of basal elements; circuli fine. 



