309 

 2. Chilatherina sentaniensis (M. Web.) [Fig. 82, p. 307]. 



Rhombatractus sentaniensis Max Weber, Nova Guinea V. Livr. 2, 1908, p. 235. 



Nova Guinea IX. Livr. 4, 1913, p. 564. 

 Chilatherina sentaniensis Tate Regan, Trans. Zool. Soc. London XX. Part 6, 



1914, p. 282. 



DM.3 4; D' 2 . I. 10 12; A. I. 22 24; P. I. 12; V. 1.5 ; 



L.I. 41 42; L.tr. 13. 



Dorsal profile somewhat convex behind nape; ventral profile 

 strongly convex. Head pointed. Height 2.4 3.3, 2.7 to 4 in 

 length with caudal. * Head somewhat more or less than 3.5, 

 3.9 4.3 in length with caudal. Eye 3.5 to nearly 4, nearly 1.5 

 in snout, which is somewhat longer than interorbital space. 

 Upper jaw slightly prominent. Mouthopening reaching behind 

 middle of length of snout, but not to frontborder of eye. Anterior 

 end of maxillary generally visible, when the mouth is closed. 

 Jaws with several rows of pointed teeth extending anteriorly 

 to the outside of the lips, which are thickened. Small teeth 

 on vomer, palatines and on base of tongue. The intermaxillaries 

 are gently curved, without abrupt bent between their hori- 

 zontal and the lateral part. Two rows of scales on postocular 

 part of cheeks. Large scales on operculum, smaller ones on 

 its superior part. First dorsal separated by 22 27 scales from 

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

 much longer than that of anal, which is shorter than eye. 

 Length of base of anal much more than distance between origin 

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

 about 5 6 scales behind that of anal. Pectorals curved, as 

 long as head without snout. Scales smooth or indistinctly crenu- 

 lated. Caudal peduncle longer or much longer than high. Colour 

 of alcohol specimens reddish brown above, silvery below, with 

 a more or less distinct longitudinal black band and sometimes 

 with narrow cross-bars on the lower half of the body. Fins 

 blackish. Length no mm. 



Nom. in dig. : Seu (Lake Sentani). 



Habitat: North' New Guinea (Lake Sentani !, river Sekanto !). 



Fresh water. 



5. Glossolepis M. Weber. 



(M. WEBER, Nova Guinea V. Livr. 2, 1908, p. 241). 



Much compressed, oblong. The dorsal profile much elevated 



