74 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Black band, bordered by 2 silvery streaks from eye to end of tail. 

 Two brilliant streaks on back, one appearing to have been leaden. 

 Belly with oblique streaks of silvery dots. Length, 150 nun. (Valen- 

 ciennes.) 



An imperfectly known doubtful species, without locality and not 

 seen since originally noticed. 



PENTAPODUS POROSUS (Valenciennes) 



Pentapus porosus Valenciennes, Hist. Nat. Poiss., vol. 6, p. 267, pi. 156, 1830 (no 

 locality). — Gunthbr, Cat. Fish. Brit. Mus., vol. 1, p. 382, 1859 (compiled). 



Depth Z%; head d%, width 3. Snout 3 in head; eye 3%, l}i in 

 snout; maxillary reaches eye, length 3 in head; canine in front of each 

 jaw with row of uniformly short teeth following; interorbital low; 

 preopercle edge entire or crenulate; suborbital depth 3J^. 



Scales in figure 51 in lateral line to caudal base and 5 more non- 

 tubular over latter; 3 above, 9 below, 15 predorsal forward opposite 

 eye center, 7 rows on cheek with broad naked preopercle flange. 



D. X, 9, third spine 2% in head, last spine 3%, first ray 2}^; A. Ill, 

 7, third ray 4%, first ray 3; least depth of caudal peduncle 3; pectoral 

 V/i] ventral 1%; caudal 2% in combined head and body to caudal base, 

 deeply emarginate, lobes pointed. 



Brownish. At upper preopercle angle 2 longitudinal silvery lines, 

 upper extends opposite end of depressed pectoral, lower similarly 

 parallel. On back above lateral line 2 longitudinal gray bands and 

 on flanks many oblique streaks formed by series of dark dots. Dorsal 

 appears to have been spotted. Length, 188 mm. (Valenciennes.) 



A little-known species, imperfectly known and without locality. 



PENTAPODUS NEMURUS (Bleeker) 



Heterognathodon nemurus Bleeker, Nat. Tijds. Nederland. Indie, vol. 3, p. 754, 

 1852 (type locality: Macassar and Tana\yanco, Celebes). — Gunthkr, Cat. 

 Fish. Brit. Mus., vol. 1, p. 365, 1859 (no locality). — Elera, Cat. Fauna 

 Filip., vol. 1, p. 478, 1895 (Cebu). 



Pentapus nemurus Bleeker, Atlas Ichth. Ind. N^erland., vol. 7, pi. (16) 294, 

 fig. 3, 1873-1876; vol. 8, p. 102, 1876-1877 (Celebes, Timor, Amboina, Aru).— 

 Seale and Bean, Proc. U. S. Nat. Mus., vol. 33, p. 244, 1907 (Zamboanga). — 

 Beaufort, Bijd. Dierk., Amsterdam, vol. 19, p. 121, 1913 (Saonek, Wai- 

 giu).— Fowler, Copeia, No. 58, p. 64, 1918 (Philippines). — Fowler and 

 Bean, Proc. U. S. Nat. Mus., vol. 62, art. 2, p. 39, 1922 (Zamboanga and Cebu). — 

 Fowler, Proc. Acad. Nat. Sci. Philadelphia, 1927, p. 283 (Philippines); 

 Mem. Bishop Mus., vol. 10, p. 218, 1928 (copied). 



Penlapodus nemurus Fowler, Mem. Bishop Mus., vol. 11, No. 5, p. 335, 1931 

 (reference) . 



Depth 3/5 to 3%; head 3% to 3%, width 1% to 2. Snout 2% to 3% in 

 head; eye 3)^ to 4)^, V/i to V/2 in snout, 1}^ to 1% in interorbital; maxil- 

 lary reaches nearly to or quite opposite front eye edge, expansion 

 2% to 3)^ in eye, length 2% to 3 in head; teeth in narrow villiform 

 bands, above of 6 or 7 irregular rows wdth outer row enlarged also 

 4 front outer curved canines; lower teeth anteriorlv villiform bandlike 



