377 



shaped. Intermaxillaries not protractile, firmly united even 

 coalesced with maxillaries. Maxillaries articulating with a pro- 

 minent knob at the anterior extremity of the palatines. No 

 mesopterygoid. Pointed teeth in jaws. None on palate. Pectorals 

 inserted rather high up. Ventrals with 6 or 7 rays. Caudal 

 emarginate. Gillmembranes free from isthmus. No pseudobran- 

 chiae. Third and fourth upper pharyngeals dentigerous. Gill- 

 membranes free from isthmus and from each other. Branchi- 

 ostegals 5- 7. 



Distribution: Lakes of Celebes. 



Freshwater. 



Key to the genera of Ad riani cht hy idae. 



1. Lower jaw slightly prominent. Intermaxillaries not coa- 

 lesced with maxillaries. D. II 13. V. 7 Xenopoecilus p. 377. 



2. Lower jaw totally included. Intermaxillaries coalesced 



with maxillaries. D. 17. V. 6 . . . . ' Adrianichthys p. 379. 



i. Xenopoecilus Tate Regan. 



(TATE REGAN, Ann. Mag. Nat. Hist. (8) VIII. 1911, p. 374). 



Elongate, compressed. Head flattened above. Bones of skull, 

 especially the dermal ones, thin and delicate. Mouth large, not 

 protractile, horizontal with a bent downwards near corner of 

 mouth, bordered above by the intermaxillaries, which bear 

 villiform band of pointed teeth, similar to that in the lower 

 jaw. Maxillaries behind intermaxillaries, not coalesced with 



Fig. 100. Xenopoecilus poptae n. sp. X V-2- 



them, articulating with palatines by a knoblike articulation, 

 which gives rise to a prominence on the dorsal side of the 

 flat snout. No teeth on palate. Head scaly above and on opercles. 

 Scales small, more than 70 in a lateral line, thin, cycloid 

 with concentric lines. Dorsal rather short, with 11 13 rays, 

 situated above anal, which is longer and the origin of which 



