28; 



12 — 1 6 short dentated, or 30 long and slender gillrakers on 

 the lower part of the anterior arch. 



Rather sn:iall fishes, living in rivulets, streams and lakes of 

 Australia, New Guinea and neighbouring islands (Aru-Islands, 

 Waigeuj. 



Note. The indo-australian genera and species of Mel an o- 

 taeniinae are also treated by JORDAN & HUBISS (A mono- 

 graph, review of the family oi Atherinidae, Stanford University 

 Publications 19 19). As the authors had not the benefit to see 

 the species themsclf, their treatement of them is a replica of 

 that of C. T. Regan. His descriptions are quoted under the 

 genera and species named on the following pages. We there- 

 fore did not think it necessary to quote also the identical 

 names used again by JORDAN & HUBBS. 



Key to the indo-australian genera of 

 Melanotaeniinae. 



I. Scales I'egulaily ananged, 30 — 44 in a row between 



head and caudal, smooth or with faint crenulations. 



A. Intermaxillaries with an abrupt bent between their 



horizontal and lateral part. I^.l. 30 — 39. 



a. Teeth not extending on outside of lips, which 



are not thickened. IMouthopening rather small, 



not reaching vertical through fronthorder of eye. Mclanotixcnia p. 287. 

 /'. Teeth extending on outside of lips, which are 

 thickened. Mouthopening comparatively large, 

 reaching to vertical through frontljorder of eye 



or nearly so •. Rhombatiactus p. 296. 



/>. Intermaxillaries without an abrupt bent between 

 their horizontal and lateral part. L.l. 40 — 44. 



a. First dorsal with 4 — 5 spines. Palate toothless. Centratlieiina p. 305. 

 /'. First dorsal with one spine and 3 — 5 soft rays. 



Teeth on vomer Chilatheriua p. 307. 



11. Scales irregularly arranged, 55—60 in a row between 

 head and caudal, deeply crenulated along their hind- 

 margin GlossoUpis p. 309. 



I. Melanotaenia Gill. 



(Giu,, Proc. Acad. Philadelphia 1862, p. 280; IM.\X Weber, Nova 

 Guinea V. Livr. 2, 1908, p. 238). 

 Neiiiatocentiis Peters, Monatsber. Akad. Berlin 1866, p. 516. 



