348 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Ind., vol. 3, 1894, p. 407 (Amparang River, Celebes) ; Semon's Zool. Forsch. 

 Reis. Austral., vol. 5, 1895, p. 262 (Ambon). — Eleka, Cat. Fauna Filip., 

 vol. 1, 1895, p. 473 (Luzon, Camarines Sur, Pasacao, Manila, Laguna de 

 Bay). — BEAtrroET, Bijd. Dierk., Amsterdam, pt. 19, 1913, p. 118 (Kairatu, 

 West Ceram). — Weber, Nova Guinea, vol. 9, pt. 4, 1913, p. 582 (Sermowai 

 River). — Fowleb, Mem. Bishop Mus., vol. 10, 1928, p. 212 (compiled). 



Therapon (Datnia) argenteus Bleekee, Atlas Ichth. Ind. N6erland., vol. 7, 

 1873-1876, p. 114 (Java, Sumatra, Amboina) ; vol. 8, 1876-1877, pL (61) 

 339, fig. 4. — Ogilby and McCulloch, Mem. Queensland Mus., vol. 5, 1916, 

 p. 115 (Port Moresby, Papua; Normanby Island in fresh water; Santo 

 and Eromanga, New Hebrides; Queensland). 



Mesopristes macracanthus Bleekeb, Nat. Geneesk. Arch. Nederland. Indie 

 (Typogr. Batavia), vol. 2, 1845, p. 523. Batavia, Java. 



Datnia ccmcellatoides Bleekeb, Nat. Tijds. Nederland. Indie, vol. 4, 1853, 

 p. 247. Priaman, Sumatra, in sea ; Amboina, in rivers. 



Datnia obtusirostHs Guichenot, M6m. Soc. Sci. Nat. Cherbourg, vol. 12, 1866, 

 p. 132. Madagascar. 



Therapon oMusirostris Sauvage, Hist. Nat. Madagascar, Poiss., 1891, p. 155, 

 pi. 28, fig. 5 (Madagascar). 



Therapon nasutus Macleay, Proc. Linn. Soc. New South Wales, vol. 7, 1882, 

 p. 258. Fresh water, Normanby Island. 



Therapon chalybeus Macleay, Proc. Linn. Soc. New South Wales, vol. 8, 1884, 

 p. 259. Fresh water, Normanby Island. 



Therapon acutirostris De Vis, Proc. Linn. Soc. New South Wales, vol. 9, 1884, 

 p. 398. Queensland. 



Depth 21/2 to 22/3 ; head 2% to Si/g, width 1% to 21/8- Snout 2 to 

 2% in head; eye 3% to 4%, ly^ to 1% in snout, greater than inter- 

 orbital in young to equal with age ; maxillary reaches eye in young, 

 falls little short with age, expansion 2 to 2i/^ in eye, length 3 to 31/3 

 in head; lips narrow, somewhat fleshy; teeth fine, in rather narrow 

 bands in jaws, of 5 irregular series and slightly enlarged outer 

 series; interorbital 3% to 41/2 in head, scarcely elevated, nearly level; 

 preopercle edge with 18 to 20 denticles. Gill rakers 10+17, lan- 

 ceolate, slightly less than gill filaments or 2% in eye. 



Scales 56 to 58 in lateral line to caudal base and 10 to 12 more on 

 latter; 11 to 12 scales above lateral line, 18 to 21 below, 13 to 16 

 predorsal, 5 rows on cheek. Suprascapula denticulate. Scales with 

 11 basal radiating striae; apical denticles 39 to 68, slender, with 6 

 to 9 transverse series of basal elements ; circuli fine. 



D. XII, 10, I, fourth spine 1% to 1% in head, second ray 1% to 

 V/s; A. Ill, 8, I, second spine 1% to 14^, second ray 1% to 1%; 

 caudal IV5 to l^^? slightly emarginate, nearly truncate as expanded ; 

 least depth of caudal peduncle 2% to 2% ; pectoral II/3 to 1% ; ventral 

 11/5 to 11/3. 



Back brown, little paler on sides and whitish on under surface. 

 Body with bright silvery reflections, spines burnished with silvery 

 white. Margin of gill opening narrowly dusky brown. Iris brown- 

 ish yellow. Spinous dorsal with deep brown shading on membranes. 

 Soft dorsal and caudal brown like back. Anal with membranes of 



