128 



Tylosurus coromaticieliciis ]oxAa.w &. Staiks, Proc. U. S. Nat. Mus. XXVI. 1903, p. 530. 



Tylostirus melanotus Fowler, Journ. Acad. Nat. Sci. Philad. (2) XII. 1904, p. 501. 

 Belonc iiie/d?iottis Giinther, Fische der Siidsee, Heft VIII. 1909, p. 352. 

 Siroiigyhtra coroDiandelica Fowler, Proc. Acad. Nat. So. Philadelphia LXXI. 

 1919, p. 5. 



D. 2.23 — 24; K. 2.20— 21; P. I. II — 12; V. 1-5; L.I. + 335 — 350. 



Compressed, the breadth of the body going 1.3 — 1.8 in the 

 height of the body. Caudal peduncle almost as broad as high. 

 Height 14 — 17, 17 — 18 in length with caudal. Head 3.1 — 3.3, 

 3.5 — 3.6 in length with caudal. Eye about twice or somewhat 

 more in postorbital part of head, slightly less than interorbital 

 space and about 7 times in snout. Height of mandible below 

 pupil one third of horizontal diameter of eye. Upper surface 

 of head flat, striated, with an extremely shallow broad median 

 groove, which is not more than a depression. Maxillary enti- 

 rely hidden by the praeorbital. Operculum not scaly. Canines 

 short, straight. Tongue covered with numerous patches of 

 very small granular teeth. Pectorals about equal to postorbital 

 part of head; ventrals conspicuously shorter. Base of ventrals 

 about midway between hindmargin of eye and base of caudal. 

 Middle dorsal rays shorter than anterior and posterior ones. 

 Anterior anal rays longer than the others, which are subequal. 

 Origin of dorsal above second simple ray of anal; 20^ — 24 

 scales between origin of dorsal and lateral line. Lateral line 

 forming a more or less elevated dark keel on caudal peduncle. 

 Caudal forked. Dark brown above, silvery below, the two 

 colours sharply defined. Dorsal blackish. Anal with a dark 

 margin. Pectorals blackish towards their end. Length 600 mm. 



Nom. in dig.: Djulong-djulong (Malay Batavia), Tjakalang 

 (Moluccos). 



Habitat: Singapore; Sumatra (Padang); Java (Batavia); 

 Celebes (Makassar!, North Celebes); Moluccos!; Island Salibabu !; 

 Sumbawa!; Ternate. — North Australia, New Britain, New 

 Caledonia, Formosa, Japan. 



In sea. 



8. Tylosurus crocodilus (Lesueur). 



Esox bclone Forskal, Descr. Animal. 1775, p. 67 (nee Linne). 



Belonc crocodilus Lesueur, Journ. Ac. Nat. Sc. Philad. II. 1 821, p. 129. 



Belone chorani Riippell, Neue Wirbelthiere, Fische 1835, p. 72. 



Belone crocodilus Cuvier & Valenciennes, Hist. nat. Poiss. XVIII. 1846, p. 440. 



Belone choram Giinther, Cat. Brit. Mus. VI. 1866, p. 239. 



Belone choram Klunzinger, Abhandl. zool. hot. Gcsellsch, Wien XXI. iS7i,p. 578. 



