164 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



AMBASSIS WOLFFI Blceker 



Ambassis wolffi Bleeker, Nat. Tijds. Ned. Indie, vol. 1, 1850, pp. 3, 9. 

 Bandjermassing, Borneo. — Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, 

 p. 226 (copied). — Bleeker, Atlas Ichth. Ind. Norland., vol. 8, 1876-77, 

 p. 133, pi. (47) 325, fig. 2 (Sumatra, Borneo, Celebes). — Fowler, Proc. 

 Acad. Nat. Sci. Phila., 1905, p. 500 (Baram, Borneo). 



Ambassis wolffi, Elera, Cat. Fauna Filip., 1895, p. 469 (Samara, Borongan). 



Ambassis robustus (Schlegel) Gunther, Cat. Fish. Brit. Mus., vol. 1, 1859, 

 p. 222. Borneo. — Steindachner, Arch. Zool. Anat. Fisiol., vol. 3, 1864, 

 p. 197, pi. 4, fig. 1 (Celebes).— Elera, Cat. Fauna Filip., 1895, p. 467 

 (Samara and Cebu). 



Depth 2^4; head 2%, width 234. Snout 4% in head from snout 

 tip; eye 3, much greater than snout or interorbital; maxillary reaches 

 % in eye, expansion 2% in eye, length 2}i in total head length; teeth 

 fine, villiform, in narrow bands in jaws with few anterior slightly 

 enlarged; vomer and palatines each with bands of very small teeth, 

 none on tongue; interorbital 4%, little convex; 6 or 7 postero- 

 superior orbital serrae; lower preorbital edge with 10 or 11 serrae, 

 ridge with 7 or 8 smaller serrae; lower preopercle ridge and edge 

 serrate, spine at angle of ridge large and narrow. Gill rakers 10+ 17, 

 finely lanceolate, L £ of eye; gill filaments % gill rakers. 



Scales 44 in lateral line to caudal base and 4 more on latter; 6 

 scales above lateral line, 15 befow, 27 predorsal with median keel for- 

 ward to middle of interorbital, 7 rows on cheek to preopercle ridge; 

 caudal largely covered with small scales, larger basally; dorsals and 

 anals with rather broad basal scaly sheaths; patch of small scales on 

 pectoral base. Scales with 4 to 6 basal radiating striae; circuli fine, 

 especially so apically. 



D. VII, I, 10, 1, second spine 13^ in total head length, first ray 2)4; 

 A. 9, 1 (abnormal), fourth ray 2%\ caudal 134, deeply forked; least 

 depth of caudal peduncle 3^5 ; pectoral 134; ventral 134- 



Back dull brown, sides and below white, shot with silvery, espe- 

 cially on opercle. Iris whitish. Apparently no white lateral band. 

 Fins all pale brownish, due to sprinkling of dark dots. Spinous dorsal 

 with membranes dusky terminally or marginally. Ventrals also 

 dusky marginally. 



Known only from the East Indies and Siam. Though reported 

 from the Philippines no examples are in our collection. The above 

 description is from the example 147 mm. long, obtained in Baram, 

 British North Borneo, 1898; obtained by Dr. W.H. Furness, 3d, and 

 now in the collection of the Academy of Natural Sciences of Phila- 

 delphia. According to Bleeker it reaches 203 mm. in length. 



Family DULEIDAE 



Body oblong, strongly compressed. Head moderate, compressed. 

 Mouth large, protractile. Maxillary exposed, without supplemental 

 bone. Teeth villiform, in bands in jaws, usually on vomer, palatines, 



