342 MB. F. DAT ON THE GEO&EAPHICAL 



its affluents, in the Jumna and Ganges, also in the Irawaddi in 

 Burma to far above Mandalay. 



5. Pangasitjs^ Cuvier Sf Valenciennes, Larger rivers and 

 estuaries of India and Burma to the Malay archipelago. 



6. PsEUDETJTROPiirs^, BleeTcev. These fishes are common in the 

 waters of Sind, India, Ceylon, and Burma, but at the Malay 

 archipelago appear to be represented by a single species. 



There is a very similar genus {Eutropius) separated from the 

 foregoing owing to the position of its two pairs of mandibular 

 barbels, the pair on either side being anterior to the inner ones, 

 whereas in Fseudeutropius they arise on a transverse line. 



All authenticated specimens of Eufropius are African ; but one 

 species, said to have come from India, was purchased in Liverpool 

 and is in the British Museum. There is no other record of this 

 one having been found in Africa, neither has it been brought from 

 India by any other party ; and, until rediscovered, the land which 

 gave it birth may fairly be considered an open question. 



Fseudeutropius, on the contrary, has not been found in Africa ; 

 and I believe that our present knowledge only warrants our con- 

 sidering the one genus African, the other Asiatic. I should 

 mention here that a fossil fish has been discovered in the tertiary 

 formation at Sumatra (deficient of its head), and has been assigned 

 to this genus (Giinther, Geol. Mag., Oct. 1876). 



7. Ojltea^, McClelland. These small fishes appear to be re- 

 stricted, so far as we know, to the hills in Upper Assam and Pegu. 



8. CaI/LICHeous*, Hamilton Buchanan. Sind, India, Ceylon, 

 Burma to the Malay archipelago and China. 



9. Wallago, BleeTcer. Sind, India, Ceylon, Burma to the 

 Malay archipelago. 



10. SiLUEirs^, Artedi. From Eastern Europe and Turkestan, 

 along the Himalayas to Akyab, Tenasserim, Cochin China, the 

 Malay archipelago, and China ; also along the hills of the Malabar 

 coast of India. 



^ Includes Pseudofangasius and^Helicophagus, Bleeker. 



^ Includes Clupisoma, Swainson, SchilheicMhys, Bleeker. 



^ Includes BrancMosteus, Gill. 



* Includes : — Oiiijpok, Lacepede ; Kryjptojrieriis, Kryjpfopterichthys, Micronema, 

 PJialacronotus, Hemisilurus, Silurodes, Psetidosilurus, and Silurichthys, Bleeker ; 

 Pterocryptes, Peters. 



Parasilurns, pt., Bleeker. 



