25. SILONDIA. 65 



2. Helicophagus waandersii. 



Bleekcr, Prodr. Silur. p. 175, and Ail. Ichih. Silur. p. 77. tab. 80. 

 B. 9. D. 1/7. A. 37. P. 1/11. 

 The humeral process longish, obtusely rounded behind ; barbels 

 very short. The vomerine teeth form two small, narrow, divergent 

 patches. Dorsal and pectoral spines strong, serrated, only a little 

 shorter than the head. 

 Sumatra. 



a. Type of the species. From Dr. P. v. Bleeker's Collection. 



25. SILONDIA. 



Silundia, Cuv. 8f Val. xv. p. 48. 



Adipose fin very short ; a short dorsal fin with a pungent spine 

 and with seven (six) soft rays ; anal fin elongate, with more than 

 forty rays. Barbels minute, two : one at each maxillary. Teeth on 

 the palate villiform, in a crescentic band. Jaws subequal in length. 

 Eyes with a free orbital margin. The posterior nostrils are closer 

 together than the anterior, which are quite in front of the snout. 

 Caudal forked ; ventral rays six. 



East Indian continent. 



1. Silondia gangetica. 



Pimelodus silondia, Ham. Buck. pp. 160, 375. tab. 7. fig. 50. 

 Silundia gangetica, Cuv. fy Val. xv. p. 49. pi. 426; Bleek. Verh. Batav. 



Genootsch. xxv., Hindost. p. 118. 

 Ageneiosus childreni, Sykes, Trans. Zool. Soc. ii. p. 375. tab. 66. fig. 3. 



B. 11-12. D. 1/7. A. 42-46. P. 1/12-13. 



Teeth in the jaws cardiform, in two irregular series. 

 Bengal, Dekkan. 



a-e. Young : types of the species. Ganges. Presented by G. R. 



Waterhouse, Esq. 

 /. Four feet long : stuffed. Ganges. 



vol. v. 



