230 
Plotosus anguillaris Giinther, Cat. Brit. Mus. V. 1864, p. 24. 
Plotosus Arab Day, Fishes of India 4°, 1878—-1888, p. 483. 
Plotosus anguillaris Giinther, Fische der Stidsee, Heft VIII. 1909, p. 372. 
Bj-223 82. Ds is 454) /220D. So100;; Ast 707 gees 
[O14 34 Vii st 319s Gey cireas 10: 
Height 6—8, head about 5, eye 5'/,—7'/,, eyedistance 2—3 
diameters of eye. Snout more than twice as long as eye. 8 
barbels, more or less equal. Nasal barbels reaching to front or 
hindmargin of eye. First dorsal about as high as half the length 
of the head, its spine a little more than half the height of the 
fin, with the anterior and especially the posterior edge serrated. 
Second dorsal much lower, of uniform height. Caudal rounded. 
Anal similar to second dorsal. Ventrals reaching the anal, '/, 
shorter than pectorals, which nearly equal first dorsal. Their 
spine similar to that of first dorsal. The pectorals do not reach 
ventrals. Teeth of maxillary band mesially in 2, laterally in 
one row. Those of the inframaxillary band in 2—3 rows, 
laterally in one; the lateral teeth a little stronger than those in 
the middle. Vomerine band crescentic, mesially with 2-3 rows 
of teeth, of which the posterior median ones are the largest. 
25 gillrakers on the entire first branchial arch, the first ones 
minute. Colour in alcohol brown, lighter on the abdomen. 
Fins dark. Second dorsal, caudal and anal with a dark edge. 
When young a narrow white stripe running from snout above 
eye to near base of caudal. A second one below the eye, 
above the pectorals, running to posterior portion of tail. 
Length 300 mm. 
Nomen indig.: Sambilang Karang (Malay.), Oselau (Blitok), 
Ikapor (Waigeu). 
Habitat: Java (Batavia!, Bantam, Blitok!) ; Sumatra (Telok- 
betong, Priaman, Trussan, Tiku, Siboga, Deli!); Pinang; Sin- 
gapore; Batu; Nias; Bintang; Banka; Borneo (Balikpapan!}, 
Kota Baru!, Sandakan); Celebes (Macassar!, Kwandang!, 
Menado!); Buton!; Lombok!; Sangi; Ternate; Batjan; Buru; 
Ambon!; Ceram; Kei islands!; Aru islands!; Waigeu; New 
Guinea. — Australia, Lord Howe island, Solomon islands; 
Fidji islands, Samoa islands to Society- and Kingsmill islands; 
Philippines; Formosa; Tonkin; China; Japan; Malay peninsula, 
Siam, Andamans to British India and Ceylon, Red Sea; East 
Coast of Africa to Madagascar. 
In sea, estuaries and rivers. 
