■ EXPLANATION OF PLATE lllA. 



Mouths and Teeth of Indian Torpedinid^. 



[All the teeth are drawn from preparations mounted in canada balsam.] 



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 Benthobatis moresbyi, x 8. 

 $a. — 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. 

 7a.— Teeth of the same, x 75. 



