EXPLANATION OE PLATE IIIA. 
Mouths and Teeth of Indian Torpedinidæ;. 
[All the teeth are drawn from preparations mounted in canada batsam.] 
Fig. I. — Internal view of the mouth of Narcine timlei, x 4. 
,, la . — Teeth of the same, x 75. 
,, 2. — Internal view of the mouth of Narcine hrunnea^ x 4. 
,, 2a . — Teeth of the same, x 75. 
,, 3. — Internal view of the mouth of Narcine mollis, x 6. 
,, 3«. — Teeth of the same, x 75. 
,, 4. — Teeth of Torpedo marmorata, x 20. 
,, 5. — Mouth of Benthohatis moresbyi, x 8. 
,, 5«. — Teeth of the same, x 75. 
,, 6. — Mouth of Astrape dipterygia, x 6. 
,, 6a. — Teeth of the same, x 75. 
, 7. — Mouth of Bengalichthys impennis, x 6. 
, y a . — Teeth of the same, x 75. 
