127 



smooth on touch. Maxillary nearly entirely hidden by prae- 

 orbital, when the mouth is closed. Operculum not scaly. Canines 

 well developed, subulate, curved forwards. Tongue covered 

 with granular teeth. Pectorals equal to or somewhat longer 

 than postorbital part of head; ventrals a little shorter than 

 pectorals. Base of ventrals about midway between front of 

 eye and base of caudal. Middle dorsal rays the shortest, those 

 of the hinderhalf prolonged, although not so long as the first 

 ray. First anal ray longer than first dorsal ray. Middle and 

 hinder anal rays subequal in length, much shorter than the ante- 

 rior ones. Origin of dorsal above second undivided, or above first 

 divided ray of anal; 23 or 24 scales between origin of dorsal 

 and lateral line. Lateral line forming a more or less elevated 

 dark brown keel on the caudal peduncle. Caudal forked, less 

 so in young specimens. Colour brownish above, silvery below. 

 Lower lip, which is produced into a flaplike organ in young 

 specimens, dark brown. Fins yellowish, more or less blackish 

 in their distal part; hinderhalf of dorsal almost completely so. 

 Middle caudal rays blackish. Length over 1000 mm. 



Nom. indig. : Djulong-djulong (Malay Batavia); Tendrah, 

 Lontjong (Javan.) ; Kadjang (Malay Bantam); Sakku (Ternate, 

 Ambon), Saku (Menado), Silowang (Batjan). 



Habitat: Singapore; Sumatra (Siboga, Benkulen); Nias!; 

 Pulu Weh ! ; Banka; Riouw ; Java (Batavia!, Bantam, Semarang!, 

 Surabaya, Banjuwangi); Bawean Island; Borneo (Sandakan) ; 

 Cocos Island; Madura; Bali; Lombok ! ; Solor; Celebes (Ma- 

 kassar!, Bonthain, Badjoa, Menado) ; Ternate ; Batjan; Ambon! ; 

 Banda!; Ceram (Kawa!); Waigeu; Aru Islands; New Guinea 

 (British New Guinea, Wilhelmsland !). — From the Seychelles 

 and British India, Japan, Philippines to North Australia and 

 to the Sandwich Islands. 



In sea. 



7. Tylosurus melanotus (Blkr.) [Fig. 47, p. 119]. 



Bclone corotnandelica v. Hasselt, Alg. iConst- en LetterboJe, I. 1823, p. 130 



(nom. nudum). 

 Bcloiic timucoides v. Hasselt, Bull, de Fcrussac, II. 1824 Zool. p. 374 (no descr.). 

 Bclone melanotus Bleeker, Nat. Tijdschr. Ned. Ind. I. 1850, p. 94. 

 Belone melanotus Bleeker, Veih. Bat. Genootsch. XXIV. Snoekacht. Visschen, 



1852, p. 14. 

 Mastacembelus crocodilus Bleeker, Ned. Tijdschr. Dicrk. HI. 1863, p. 226. 

 Belone melanotus (Uinlher, Cat. Brit. Mus. VI. 1866, p. 238. 

 Mastaccvihelus melanotus Bleeker, All. ichth. VI. 1866 — 1872, p. 47. 



