1849.] Catalogue of Malayan Fishes, \A2\ 



across the throat. Both are parallel, not diverging, as they appear in 

 M. M, Miiller and Henle's figure of Cephaloptera kuhlii. They are 

 turned upwards, their upper surface being longitudinally hollowed. 

 The spiracles are very small, hid beneath the origin of the pectorals. 

 The margin of the nasal valve is straight and covers nearly the whole 

 of the upper jaw. The angles form a conical lobule. The narrow 

 band of teeth extends in both jaws not quite to the angle, occupying 

 the central -§- of the breadth of the mouth. The teeth are uniformly 

 minute, flattened, of a pentagonal shape, with backwards directed point. 

 They have frequently two or three such points. They are generally 

 twice broader than long, but in both jaws appear here and there a 

 single tooth broader than the rest, as if composed of two or three teeth 

 soldered together. The upper jaw has 80, the lower 95 rows of teeth* 

 each consisting of 6, rarely 7. Behind the upper jaw appears a large 

 membranous valve, the free margin of which is convex. There is no 

 trace of a tongue. The equidistant gill-openings are arranged on two 

 backwards converging lines. Each opening is of this figure ^, the first 

 being double the length of the fifth. The only individual examined, 

 was observed at Pinang in February 1845. It was a male, apparently 

 young, of the following dimensions. 



From the centre between the cranial fins to the centre of 



the snout, 3f inch. 



From the centre of the snout to the mouth, If 



„ the mouth to the anus, 11 



Length of the tail, 19f 



Distance between the nostrils, 2 J 



„ from the nostrils to the mouth, Of 



Breadth of the mouth, 3f 



Length of the cranial fins, 5f 



Distance between them, 5-| 



„ between the eyes, , 5 



Base (Length) of the pectorals, 13f 



Breadth of do., 13f 



Base of the dorsal, If 



Anterior margin of do., 2\ 



Posterior „ of do., Of 



Superior „ of do., 0J 



