1849.] Catalogue of Malayan Fishes. 1393 



I of the length of the dorsal crest. A very short crest appears at the 

 lower circumference of each spiracle. The crests are composed of sin- 

 gle scales larger than the rest. All have a polygonal base from which 

 rises a compressed thorn, from the apex of which numerous furrows 

 radiate towards the base of the sides. On the snout, above and be- 

 neath, appear a number of pores. Opposite the spiracles, a little in 

 front of the dorsal crest, the integuments are pierced by two large pores, 

 placed side by side. The distance between these two is about one 

 half of the distance from each to the nearest supraorbital crest. 



The following dimensions were taken from a male, measuring 7 ft. 

 in length. 

 Distance from the apex of the snout to the mouth, . . ft. 6| inch. 



„ from the mouth to the middle between the termi- 

 nations of the pectoral fins, 1 6 



„ from thence to the anus, . . . 1 



„ from the anus to the caudal 2 3f 



Length of the upper lobe of the caudal, 1 6 



„ of the lower lobe of ditto, 1 1^ 



„ of the base of the anterior dorsal, . . 5f 



Height of the fin, lOf 



Length of the base of the posterior do 4-J 



Height of the fin, 10 



Distance between the anterior angles of the pectorals, 3 8f 

 Length of the base of the pectorals, ; 1 2f 



„ of the base of the ventrals, 4f 



„ of the male appendages, 1 2 



Breadth of the mouth, 7 



Length of the supraorbital crests, 8f 



„ of the dorsal crest, 1 4 



Greatest diameter of the nostril, 4{ 



of the eye, If 



„ of the spiracle, * 2J 



The description of M. M. Miiller and Henle is taken from a very 

 young individual. During four years three solitary individuals occurred 

 at Pinang. According to Lord Arthur Hay and Mr. Walter Elliot 

 they are of more frequent occurrence at Madras. Mr. Elliot, who has 

 observed the habits of the fish, describes it as hugging the shore, 



8 q 2 



