284 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Priodon tapeinosoma Bleeker, Nat. Tijds. Nederland. Indie, vol. 6, 1854, 

 p. 494 (Amboina). 



Depth 2}4 to 2%; head 3^ to SJ4, width 2 to 2.H. Snout 1% 

 in head; eye 3^ to 4')4, 2% to 33^ in snout, IJ/^ to \% in interorbital ; 

 teeth 40 to 42, 50 to 54 with age, small, compressed, pointed, mi- 

 nutely serrate; maxillary 4 to 43^8 in head; interorbital 3, broadly 

 convex. Gill rakers 4 + 9, short, conic, robust. 



Skin minutely asperous, velvety to touch; asperities little larger 

 in smallest example. 



D. V, 24, I or 25, i, first spine 2}/^ to 2)4. in head, first ray 2% to 

 2%; A. II, 23, I, second spine 3^ to 3J^, first ray 3i^ to 3^; 



Fig. 23.— Rostral variation with age of Naso tapeinosoma (Bleeker) 



caudal emarginate or lunate, with age upper lobe produced in moder- 

 ate filament, 2% to 33^ in combined head and body; least depth of 

 caudal peduncle 5 to 5}^ in head; pectoral \% to 1%; ventral 1^ 

 to 23^; caudal peduncle with 2 bony bucklers, each with broad keel, 

 anterior larger or 53^ to 5%. 



Largely uniform brown. Iris light brown. Soft dorsal and anal 

 each with 3 longitudinal blackish-brown bands, rest of fins together 

 with spinous fins dull brown; edges of soft dorsal and anal narrowly 

 whitish. Caudal brown like body, hind edge very narrowly whitish. 

 Paired fins brown, hind pectoral edge rather broadly pale brown. 



East Indies. From Giinther's translation of Bleeker's description 

 our specimens differ in that Giinther gives 29 soft dorsal rays, 28 

 anal and caudal bucklers not keeled. 



