71. OLYPTOiSTERNL'M. 



185 



71. GLYPTOSTERNUM*. 



Glyptostemon, sp., M'Clell. C'alc. Journ. Nat. Hist. ii. p. 584. 

 Glyptostemum et Glyptotliorax, Bhjth, Journ. As. Sue. Beng. xxix. 

 p. 154. 



Adipose fin rather short ; a short dorsal with one spine and with 

 six rays ; anal fin rather shoi't. Barbels eight, those of the maxil- 

 laries very broad at their base. Mouth inferior; teeth villiform, 

 palate edentulous. Head depressed, covered with soft skin above ; 

 eyes small, superior. Gill-opening wide ; giU-membranes separated 

 by an isthmus. Caudal fin forked; pectorals horizontal, with a 

 thoracic adhesive appai;atus between, which is formed by longitu- 

 dinal plaits of the skin, and rather indistinct in old individuals ; ven- 

 trals with six rays. 



East Indies. Small Siluroids inhabiting mountain-streams. 



a. Ventral and pectoral rays not plaited below. 



1. Glyptostermim trilineatum. 



? Glyptotliorax trilineatus, Blyth, Journ. As. Soc. Bcng. 18G1, xxix. 

 p. 154. 



D. 1/6. A. 13. P. 1/10. v. 6. 



Head a little longer than broad, its length being contained four 

 times and two-thirds in the total (without caudal). Eyes behind 

 the middle of the length of the head ; occipital process thrice as long 

 as broad. Lips not fringed; the maxillary barbels extend to the 



end of the head. The free portion of the tail is nearly thrice as long 

 as high. Dorsal spine rather slender, the length of its bony portion 

 being one-half, or less than one-half, of that of the head. Adipose 

 fin longer than dorsal, its length being less than one-half of its dis- 



* 1. Pimelodus tclcliitta, Ham. Buck. pp. 18.5. 378.— The unpuhlishetl draw- 

 ing shows 11 anal rays, and all the barbels shorter tlian the head. 



