71. GLYMOSTERKTTM. 187 



4. Glyptosternum lonah. 

 Bagrus lonah, Sykes, in Trans. Zool. Soc. ii. p. 371. 

 D. 1/6. A. 12. P. 1/9. V. 6. 



Head as long as broad, covered with thin skin above, two-ninths 

 of the total length (without caudal). Eyes somewhat behind the 

 middle of the length of the head ; occipital process four times as long 

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

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

 high. Dorsal fin higher than the body, with the spine rather slender, 

 enveloped in skin, and not quite half as long as the head. Adipose 

 fin longer than the dorsal, and half as long as its distance from the 

 dorsal. Caudal fin forked. The pectoral fin terminates at a consi- 

 derable distance from the ventral ; pectoral spine moderately broad, 

 with a fine outer and with a strong inner serrature. 



Dekkan. 



a. Type of the species, 6 inches long. From the Collection of Colonel 

 Sykes. 



5. Glyptosternum dekkanense. 

 D. 1/6. A. 11. P. 1/9. V. 6. 



Head rather longer than broad, its length being two-ninths of the 

 total (without caudal). Eyes somewhat behind the middle of the 

 length of the head ; occipital process four times as long as broad. 

 Lips not fringed ; the maxillary barbels extend to the end of the 

 head. The free portion of the tail is two-thirds as high as long. 

 Dorsal fin as high as the body, with the spine rather slender, enve- 

 loped in skin, and half as long as the head. Adipose fin longer than 

 dorsal, and half as long as its distance from the dorsal. Caudal fin 

 forked, its length being contained five times and a half in the total. 

 The pectoral fin terminates at a considerable distance from the ven- 

 tral ; its spine is very broad, and strongly serrated interiorly. 



Dekkan. 



a. Three and a half inches long. From the Collection of Colonel 



Sykes. 



6. Glyptosternum platypogon. 



Pimelodus platypogon, {K. $ v. H.) Cuv. 8f Val. xv. p. 152 ; Valenc. 



in Jacquem. Voy. Ind. Poiss. pi. 18. fig. 3 ; JBleek. Nat. Tydschr. Ne- 



derl. Ind. iii. p. 591. 



cyanochlorus, Bleeh. Verh. Bat. Gen. xxi. Silur. p. 11. 



Glyptosternon platypogon, Bleek. Prodr. Silur. p. 217. 

 Glyptothorax platypogon, Bleek. Atl. Ichth. Silur. p. 63. tab. 83. fig. 2. 



B. 8-9. D. 1/6. A. 11-12. P. JL. V. 6. 



The length of the head is contained thrice and two-fifths or four 

 times and a third in the total (without caudal) ; eyes in the middle 

 of the length of the head ; occipital process about twice as long as 

 broad ; lips not fringed ; the maxillary barbel extends to the base of 

 the pectoral ; the free portion of the tail is scarcely longer than high. 



