skin of isthmus. Mandibulary and mental barbels 



in a transverse series Gagata p. 268. 



B. Head depressed. Mandibulary and mental barbels 



situated in a curved line Bagarius p. 269. 



i. Glyptosternum McClelland. . 



(Me CLELLAND. Calcutta Journ. Nat. Hist. II, p. 584). 

 (Glyptothorax Blyth, Bleeker). 



Head rather depressed and covered with soft skin. Eyes 

 small, subcutaneous, looking upward. Mouth transverse, with 

 the upper jaw conspicuously longer. Nostrils close together, 

 separated by the short nasal barbel. Maxillary barbels very 

 broad at the base. Mandibulary barbels behind level of corner 

 of mouth, the shorter mental ones between them. Short dorsal 

 with a pungent spine and 6 rays. Adipose fin rather short, 

 above the short anal. Ventrals six-rayed, originating behind 

 or below last dorsal ray. Pectorals horizontal with a strong 

 denticulated spine. Caudal forked. .Between the bases of the 

 pectorals a thoracic adhesive apparatus, composed of longitu- 

 dinal plaits of the skin '). Gillopenings wide. Palate edentulous. 

 Teeth of the jaws in a villiform band. Gillmembranes confluent 

 with the skin of the isthmus. 8 9 branchiostegals. 



Synopsis of the species. 



A. Height 5 or more. 



1. Caudal peduncle nearly as long as high. Occi- 

 pital process 2 times longer than broad. 



a. Origin of ventrals far behind end of base 

 of dorsal \ distance between dorsal and 

 adipose fin more or less twice the length 



of the adipose fin G. platypogon 264. 



b. Ventrals totally below dorsal ; distance 

 between dorsal and adipose fin shorter 



than adipose fin G. baramensis p. 265. 



2. Caudal peduncle more than twice as long as 

 high. Occipital process 3 4 times longer than 



broad G. platypogonoides p. 267. 



B. Height 4 4 1 / 2 - Caudal peduncle twice or less than 



twice as long as high G. majus p. 267. 



i) This apparatus may get indistinct by preservation. 



