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origin of ventrals, its height about equal to head without snout. 

 Anal concave, its height about equal to length of snout and 

 eye. Ventrals somervhat shorter than pectorals, not reaching 

 anus or nearly so. Pectorals nearly -/g of length of head. Caudal 

 bifurcate, somewhat shorter than head. Least height of caudal 

 peduncle twice or somewhat more in its length, surrounded 

 by 26 scales. Silvery, upper surface dark. A black spot on 

 opercular flap. Fins hyaline, dorsal and caudal somewhat dusky. 

 Length 230 mm. 



Nom. in dig.: Lambak and Ringan (Djambi); Ikan Lumoh 

 (Palembang); Ikan Pingan (Indragiri, Danau Sialong lotong). 



Habitat: Sumatra (Palembang!, Djambi!, River Kampar: 

 Gunung Sahilan ! — river Kwantan : Ringat ! Taluk ! — Danau 

 Sialong lotong); Borneo (without exact locahty). 



3. Thynnichthys polylepis Blkr. 



Thynnichthys polylepis Bleeker, Ichth. Arch. Ind. Prodr. II. Cypiini, i860, 



p. 407. — Atl. Ichth. III. 1863, p. 129. 

 Thynnichthys polylepis Giinther, Cat. Brit. Mus. VII. 1S68, p. 158. 

 Thyjinichthys polylepis Vaillant, Nouv. Arch. Mus. Hist. Nat. (3) V. 1893, p. 84. 

 Thynnichthys polylepis Vaillant, Notes Leyden Mus. XXIV. 1902, p. 103. 



D. 3.8— 10; A. 3.5; P. 1. 17— 18; V. 2.8; L. 1.65— 75; 

 16 — 17 

 L. tr. I . 

 16 



Height 3.2—3.4, 4.3 — 4.5 in length with caudal. Head about 

 3.2, about 4,2 in length with caudal. Eye about 3-/3, equal to 

 snout, i^a in rounded interorbital space. Origin of dorsal 

 much nearer to end of snout than to base of caudal, opposite 

 to 15^11 or i6th scale of lateral line; about 25 or 26 scales in 

 front of it. Dorsal concave, its height shorter than length of 

 head, its second branched ray opposite to origin of ventrals. 

 Anal concave, its height equal to snout and eye. Ventrals 

 somewhat shorter than pectorals, reaching anus. Pectorals nearly 

 or quite equal to head without snout. Caudal bifurcate, the 

 lobes somewhat pointed, about equal to head. Least height 

 of caudal peduncle about -/., of its length, surrounded by 35 

 or 36 scales. Silvery, back dark. Fins hyaline, tip of dorsal 

 and of caudal lobes more or less dusky. Length over 180 mm. 



N o m e n i n d i g. : Lomopoko (Palembang). 



Habitat: Sumatra (Palembang!, Danau Sialong lotong); 

 Borneo (river Kapuas: Pontianak, Putus Sibau, Danau Sriang — 

 Mendalam river!). 



