384
M. V. L. BENNElT
_ _ _ _ _ - - - -
. _ _ _ _
Snout short
- _ ..-. ...
Lower low only
__---._
Sternarchorhomphus mulleri (Steind I
Snout short
Eigenmonnio virescens (Vol.1
Gyrnnotus coropo (Linn)
Hypopornus brevirostris (Steind )
Electrophorus electricus (Linn )
Fig. 16. Heads of representative gymnotids. Slightly modified from Ellis (1913).