202 Apodal Fishes of Bengal. 



5. PTYOBRANCHUS PARVIDENTATA, PL ix. fig. 5. 



Head small, tail slightly tapering and compressed, with a lanceolate 

 caudal fin ; only 4 teeth on the centre of the palate, forming a short row 

 approaching close to the apex of the jaw. There are about 30 teeth on 

 each side of the upper jaw. The fin rays are. 



P. 11: D. 31: A. 38 : C. 60. 



Colour, purple above the lateral line, minutely dotted, and white 

 below. 



Length 10 inches. 



Hab. — Bengal. 



6. PTYOBRANCHUS GRACILIS. PL ix.fig. 6. 



Head very small, and the muzzle very narrow and pointed. Body 

 slender ; 22 teeth on either side of the lower jaw, and 10 on the vomer. 

 Tail narrow, compressed, and lanceolate. 



Hab. — Bengal. 



ERRATA. 



For Anguilliformes, pp. 155, 158, 166, 171, 176, 

 189, read Anguillides. 



For Lycodontis, pp. 154, 158, 173, 185, 186, 

 187, and where ever it occurs in the pre- 

 ceding pages, read Strophidon. 



IV. — Description of Plates. 



PI. V. Fig. 1. a. b. c. Anguilla brevirostris J. M. half the 

 natural size. A, is a portion of the skin with 

 the scales, natural size, shewing their shape 

 and distribution ; b. teeth of the upper, and 

 c. those of the lower jaw, natural size. 

 Fig. 2. Anguilla nebulosa, J. M. half the natural size; 

 a. a portion of the skin showing the disposi- 

 tion of the scales natural size. 



PI. VI. Fig. 1. Anguilla bicolor, J. M. half size; a. teeth full 

 size. 

 2. Anguilla arracana, J. M. natural size ; a. teeth 

 full size. 



