338 FISHES. [Cuar. X. 
general shape of the body, their affinity to the eel is at- 
tested, by their confluent fins, by the absence of ventral 
fins, by the structure of the mouth and its dentition, by 
the apparatus of the gills, which opens with an inferior 
slit, and above all by the formation of the skeleton 
itself} 
Their skin is covered with minute scales, coated by a 
slimy exudation, and the upper jaw is produced into a 
soft tripartite tentacle, with which they are enabled to 
feel for their prey in the mud. They are very tenacious 
of life, and belong, without doubt, to those fishes which in 
Ceylon descend during the drought into the muddy soil.? 
Their flesh very much resembles that of the eel, and is 
highly esteemed. They were first made known to 
European naturalists by Russell‘, who brought to Europe 
from the rivers round Aleppo specimens, some of which 
are still preserved in the collection of the British Mu- 
seum. Aleppo is the most western point of their geo- 
graphical range, the group being mainly coniined to 
the East-Indian continent and its islands. 
MASTACEMBELUS ARMATUS. 
In Ceylon only one species appears to occur, the 
1 See Ginwruer’s Acanthopt. ® Cuv. and Vat., Hist. Poise. vol. 
Fishes, vol. iii. (Family Mastacem- iii. p. 459. 
belide). 4 Nat. Hist. Aleppo, 2nd edit. 
2 See post, p. 351. Lond. 1794, vol. ii. p. 208, pl. vi. 
