Auisocentrux nibrostriatus Tate Regan, Trans. Zool. Soc. London XX. Part 6, 

 1914, 1). 281 (pro parte). 



D'. 1.4— 5; D'-. 1.9— 12; A. I. 17— 21; P. I. 11 — 13; V.I. 5; 

 L.l. 33—35; I^-tr. 12—13. 



Dorsal profile ascending almost in a straight line from snout 

 to first dorsal in specimens of moderate size, but strongly- 

 convex behind nape in large specimens. Ventral profile convex. 

 Height 2.2 — 3, 2.8 — 3.8 in length with caudal. Head 3.1 — 4, 

 4 — 5 in length with caudal. Eye 2.3—6.7, about equal to snout 

 and considerably less than interorbital space. Mouthopening 

 a straight line, when seen in front. Upper jaw slightly pro- 

 minent. Mouthopening reaching to about half length of snout. 

 An outer row of strong, more or less curved teeth in the 

 jaws, followed by smaller ones inside. Small teeth on vomer, 

 palatines and base of tongue. Subocular part of cheeks with 

 two rows of scales. Large scales on operculum, excepting the 

 superior ones, which are smaller. First dorsal separated by 

 17 — 20 scales from occiput. Spine of first dorsal equal to or 

 longer than postorbital part of head, longer than that of second 

 dorsal, which is thicker and more curved and much shorter 

 than that of anal, which is about as long as eye. Length of 

 base of anal equal to or somewhat longer than distance be- 

 tween origin of first dorsal and end of second dorsal. Origin 

 of first dorsal somewhat behind or above that of anal. Pectorals 

 curved, longer than head without snout. Caudal peduncle 

 slightly longer than high, as high as long or higher than long 

 (in large specimens). Scales crenulated at their hindborder. 

 Colour of alcohol specimens brownish above, lighter below, 

 the scales silvery in the lower part of the body, the longitu- 

 dinal series being separated by wine-red stripes in fresh spe- 

 cimens. A more or less distinct darkish longitudinal band on 

 the tail. Fins dusky. Length 150 mm. 



Habitat: South New Guinea (rivers VVa Udu !, Wagani !, 

 Lake Jamur!, Lorentz river!, Setakwa river). 



Freshwater. 



3. Melanotaenia patoti (M. Web.) [Fig. t] , p. 286]. 



Rhombatractus patoti Max Weber, Zool. .'\nz. XXXII. 1907, p. 403; Abh. Sen- 



ckenb. Naturf. Gesellsch. XXXIV. 191 1, p. 26. 

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



p. 279 (pro parte). 



