284 



D'. 5; D-. 6; A. I. 9— lo; P. 9; V. 1.5; L.I. circa 30 ; L.tr. 6'/,. 



Rather elongate, compressed, more so in the posterior half 

 of the fish. Upper profile nearly straight or slightly convex 

 from snout to dorsal, lower profile slightly convex. Height 

 more than 4, 5 in length with caudal. Head 3.8, 4.6 in length 

 with caudal. Eye much longer than snout, somewhat less than 

 interorbital space, which is equal to postorbital part of head. 

 Mouthopening small, very oblique, not reaching vertical through 

 frontborder of eye. Intermaxillaries and lower jaw with a row 

 of very pointed teeth, which are somewhat curved backwards. 

 Origin of first dorsal two or three scales in front of that of 

 anal, separated by 10 scales from the large scales on crown. 

 In males the dorsal and anal fins are much higher than in 

 females, moreover the first ray of first dorsal, anal, ventrals 

 and sometimes also of pectorals is prolonged into a long fila- 

 ment. Pectorals slightly shorter than head. Caudal emarginate. 

 Yellowish, a dark lateral band from below first dorsal to caudal, 

 widening posteriorly. Caudal peduncle with a similar median 

 dorsal and ventral band, which are continued along base of 

 dorsal and anal. Body covered with elongate dark blotches, 

 corresponding with the scales and partly anastomosing, through 

 which the body has a reticulate appearance. Fins more or less 

 dusky in females, with a few black blotches on base of caudal 

 and on second dorsal. In males both dorsals, anal and in a 

 less degree caudal covered with blotches, which are arranged 

 in longitudinal rows. Length 35 mm. 



Habitat: Aru-Islands (Island Terangan !). 



Fresh water. 



2. Pseudomugil novae-guineae M. Web. [Fig. ^6, p. 285]. 



Fseitdoiinigil iiovae-guiiicac Max Weber, Nova Guinea V. Livr. 2, 1908, p. 232. — 

 Abhandl. Senckeab. Natuif. Gesellsch. XXXIV. 191 1, p. 25. — Nova Guinea 

 IX. Livr. 4, 1913, p. 556. 



D'.4; D-.8; A. I. 12; P. 10; V. 1.5; L.l. 31— 32; L.tr. 6V0. 



Elongate, compressed, more so in the posterior half of the 

 fish. Upper profile nearly straight from snout to dorsal, lower 

 profile slightly convex. Height about 5, 5.5 in length with 

 caudal. Head nearly 4 — 4.5, 4.5 to more than 5 in length with 

 caudal. Eye about 2.5, equal to postorbital part of head and 

 to interorbital space. Mouthopening very oblique, rather large, 

 not reaching vertical through frontborder of eye. Symphysis 



