204 Apodal Fishes of Bengal. 



6. Ptyobranchus gracilis, J. M. natural size. 



7. Anguilla variegata, J. M. from a drawing in 

 Buchanan's collection, a copy of which seems 

 to have fallen into the hands of Mr. Gray, by 

 whom it is given in Hard wickers illustrations 

 of Indian Zoology, (without acknowledgment 

 of the original source from whence it was 

 derived) as Anguilla Bengalensis, although it 

 is unknown in Bengal. 



PI. X. Fig. 1. Ptyobranchus arundinaceus 3 J.M. natural size, 

 with the teeth l.a. magnified to about thrice 

 the size of the jaws ; 1 .b. section of the body. 

 Fig. 2. Ptyobranchus guthrianus, J. M. natural size, 

 2. a. the teeth and jaws magnified to thrice 

 the natural size ; 2.b. section of the body. 

 Fig. 3. Ophisurus minimus, J. M. natural size, 3. a. 

 the teeth represented thrice the natural size, 

 3.b. the section of the body, and 4 the lower 

 surface of the head, showing the disposition 

 of the branchial rays. 



PI. XI. Fig. 1. Ophisternon bengalensis, J. M. natural size, 

 a. the maxillary band of teeth, and c. the 

 palatine band ; b. the teeth of the lower jaw. 

 2. Ophisternon hepaticus, J. M. half size, fig. 4, 

 the teeth of both jaws a little more than na- 

 tural size. 



PI. XII. Fig. 1. Ophicardia phayriana, J. M. natural size, 

 with 1 .a. teeth of the upper jaw ; c. the band 

 of teeth on the lower ; and 1 .b. the bran- 

 chial combs and rays natural size. 



2. Ophisurus vermiformis, J. M. natural size. 



3. Ophisurus caudatus, J. M. natural size. 



4. Ophisurus harancha, Buch. natural size. 



PI. XII. Fig. 1. Pneumabranchus striatus, J. M. natural size, 

 with a figure representing the lower surface 



