1849.] Catalogue of Malayan Fishes. 1213 



neata. In other respects the fins resemble those of the latter species. 

 At Pinang single individuals occur, but rarely, which in addition to 

 their small size, makes them less valued as an article of food. 



Plagusia trulla, Cantor. 



Ik an ledah of the Malays. 



Left side. Pale dark reddish brown ; opercles much darker than the 

 rest ; in some individuals a series of short, distant, vertical bluish lines 

 under the anterior half of the dorsal, and above the anterior third of 

 the anal ; scales with a dark longitudinal line ; posterior margin buff ; 

 fins transparent pale brownish, minutely but faintly dotted with black . 

 Iris annular golden ; rest bluish black. 



Right side. Brownish white, opercles and abdominal cavity black- 

 ish blue. 



D 109 or 111, 



C 12, lefty 4, right ; P 0, Br. VI. 



A 80 or 86, 

 20Tor 209 



Habit. — Sea of Pinang, Malayan Peninsula. 



Total length : 1 ft. 



Left side. The length of the head is 5} in the total. The distance 

 from the rounded muzzle to the anterior angle of the upper orbit is 

 from 13-j- to y 1 ^ of the total length. The point proceeding downwards 

 from the muzzle covers the symphysis of the lower jaw ; its length 

 equals the distance between the muzzle and upper orbit. The latter 

 is situated a little behind the anterior third of the length of the head, 

 opposite the middle of the upper lip. The horizontal diameter is 10£ 

 in the head. The lower orbit is placed a little farther back, still con- 

 siderably in front of the angle of the mouth ; it is a little smaller than 

 the upper ; the vertical distance between both slightly exceeds the 

 horizontal diameter of the upper. Immediately beneath the latter 

 appears a small, but remarkably developed bony protuberance, or spine. 

 A single aperture of the nostril appears a little in front of the lower 

 eye above the lip. The lips are fleshy, but not papillular, otherwise 

 the mouth, tongue and dentition resemble P. bilineata. The greatest 

 vertical diameter of the body, towards the middle, is 4^ to 4f in the 



