42 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Genus PSEUDOPLESIOPS Bleeker 



Psetidoplesiops Bleeker, Nat. Tijds. Nederland. Indie, vol. 15, 1858, p. 215. 

 Type Pseudople»iops typus Bleejkeb, monotypic. 



Body oblong, rather compressed. Head compressed. Eye lateral. 

 Jaws equal, mouth cleft oblique, not curved. Maxillary not reach- 

 ing beyond eye. Jaws with bands of teeth, outer partly' enlarged ; 

 vomer toothed, palatines and tongue toothless. Preopercle unarmed. 

 Pseudobranchiae present. Branchiostegals 6. Scales cycloid, large, 

 36 in lateral series. Head above and opercles scaly. Lateral line 

 interrupted. One dorsal with 16 flexible nonpungent spines and 

 9 or 10 rays. Anal with small flexible spine and 15 rays which partly 

 simple. Ventrals inserted before pectorals, with weak spine and 

 5 rays, of which front two simple. 



PSEUDOPLESIOPS TYPUS Bleeker 



Pseudoplesiops typus Bz.eeker, Nat. Tijds. Nederland. Indie, vol. 15, 1858, 

 p. 217. Goram Island. — Gukthek. Cat. Fish. Brit. Mus., vol. 2, 1860, p. 

 260 (copied). — Bleeker, Verb. Kon. Akad. Wet. Amsterdam, vol. 15, 

 1875, p. 30, pi. 3, fig. 1 (Goram: Amboina) ; Atlas Ichth. Ind. Neerland., 

 vol. 9, 1877, pi. (5)388, fig. 3.— Regan, Trans. Linn. Soc. London, ser. 2, 

 vol. 12, 1905, ZooL, p. 228 (Chagos Archipelago; Peros, off Diamant 

 Island). — Fowler, Proc. Acad. Nat. Sci. Philadelphia, 1927, p. 276 

 (Philippines) ; Mem. Bishop Mus., vol. 10, 1928, p. 189 (on Bleeker). 



Depth 31^ to 31/3; head 2% to 24^, width 2i/8 to 21/2. Snout 

 4% to 4% in head from snout tip ; eye 3 to 3%, greater than snout 

 or interorbital ; maxillary reaches 14 to Ys in eye, expansion 214 to 

 2% in eye, length 2% to 2,% in head from snout tip ; teeth uniserial, 

 conic, small, anteriorly in jaws several enlarged; narrow band of 

 small teeth on vomer, none on palatines or tongue; interorbital 214 

 to 2y2 in eye, nearly level. Gill rakers 6 + 10, lanceolate, short, 

 equal gill filaments or y^ of eye. 



Scales in 30 to 34 series in median lateral series to caudal base 

 and 4 or 5 more on latter ; 15 or 16 transverse scales from opposite 

 anal origin, 12 predorsal scales forward opposite hind eye edge, 4 

 rows transversely on cheek. Scales with 23 to 26 radiating striae, 

 with 1 to 4 basal marginals. 



D. XIV to XVI, 9, I or 10, i, first rays simple, first branched ray 

 1% to 1% in total head length ; A. VIII to XI, 6, i to 8. i. first 

 rays simple, first branched ray 1% to 1%; caudal 114 to 1%, convex 

 behind; least depth of caudal penduncle 2 to 2yg; pectoral 1% to 

 1%; ventral li/g to 2% in combined head and body to caudal base. 



Dull brown generally, but little paler below. Iris pale or whit- 

 ish, edge of eye socket all around narrowly dusky. Fins brown- 

 ish, membranes of vertical ones showing dusky. Caudal often dusky 

 terminally. 



