D'. I. 3— 4; D-. I. II — 12; A. I. 18— 20; P. 1.13; V. 1.5; 

 L.l. 35 ; L.tr. 1 1 — 12. 



Dorsal profile somewhat convex between occiput and dorsal. 

 Upper profile of head slightly concave. Ventral profile convex. 

 Height 2.4 — 2.8, 2.8 — 3.3 in length with caudal. Head 3.5 — 3.8, 

 4.1 — 4.7 in length with caudal. Eye more or less than 3, about 

 equal to snout and considerably less than interorbital space. 

 Mouth a straight line when seen in front. Jaws equal. Mouth- 

 opening reaching to middle of snout or somewhat farther. A 

 row of pointed teeth in both jaws, some smaller teeth behind 

 this row, forming several rows near the symphysis of the 

 lower jaw. Small teeth on vomer and on palatines. No teeth 

 on tongue. Subocular part of cheeks with one row of scales. 

 Large scales on operculum, excepting the superior ones, which 

 are smaller. First dorsal separated by 15 — 17 scales from 

 occiput. Spine of first dorsal longer than that of second dorsal 

 and of anal, about equal to postorbital part of head. Origin 

 of anal below or slightly behind that of first dorsal. Length 

 of base of anal about equal to distance between origin of first 

 dorsal and end of second dorsal. Pectorals curved, about as 

 long as head without snout. Caudal peduncle longer than high. 

 Scales smooth, some of them with faint crenulations on their 

 hindborder. Colour of alcohol specimens brownish, lighter 

 below. Third and 4*^^ longitudinal row of scales blackish with 

 a silvery gloss, the 6th and 7th form silvery bands. In fresh 

 specimens these 5 bands are separated by wine-red lines. Fins 

 dusky, wine red in life. Length 100 mm. 



Habitat: Aru-Islands !. 



Freshwater. ' 



4. Melanotaenia maculata M. Web. 



Melanotaenia maadata Max Weber, Nova Guinea V. Livr. 2, 1908, p. 239. — 



Nova Guinea IX. Livr. 4, 1913, p. 557. 

 Melanotaenia nigrans Tate Regan, Trans. Zool. Soc. London XX. Part 6, 1914, 



p. 279 (pro parte). 



D'. 1.4—6; D'. L 10— II (12); A. L 19—22; P. I. 13; V. 1.5; 

 L.l. 30—33; L.tr. 12—13. 



Dorsal profile cdnvex between occiput and first dorsal, less 

 so in young specimens. Upper profile of head concave. Ventral 

 profile convex. Height 2.3 — 3, 3.2 — 3.8 in length with caudal. 

 Head 3.3 — 3.7, 4.5 to nearly 5 in length with caudal. Eye 



