1849.] Catalogue of Malayan Fishes. 1355 



I.* Species with short head, capable of inflating themselves so as to 



attain a globular form. 

 Entire body rough. 



A. Immaculate. 



Tetrodon immaculatus, Lac6pede. 



Lacepede, I. XXIV. 1. 



Russell, XXVI. Kappa. 



Tetrodon immaculatus, Cuv. R. A. II. 368 ( a ). 



Young. Head above and back pale greyish olive, lighter on the 

 sides of the head and upper part of the body ; abdomen pale yellow 

 ochre ; axilla and the smooth spot inside the pectorals blackish ; the 

 whole body minutely dotted with brown ; spines white, those of the 

 back with black points ; pectorals, anal and dorsal pale transparent 

 olive, base of the latter blackish ; caudal pale brownish with single 

 indistinct whitish spots ; upper, lower and posterior margin black. 

 Iris olive. 



D 10, C 9j, A 9, P 17, Br. V. 



Habit. — Sea of Pinang. 

 Madras. 



Total length : 3f inch. 



The length of the head, measured to the margin of the gill-opening, 

 is contained 4£ times in the total. The eye, bordering on the profile, is 

 situated a little nearer the gill-opening than the muzzle ; the horizontal 

 diameter is| of the head ; the distance across the forehead is a little less 

 than 2 diameters. The double, contiguous nostrils are situated in front 

 of the eyes ; each aperture is pierced through a small papilla, and both 

 appear like a minute simple tentacle. The jaws are nearly equal, the four 

 teeth normal; the tongue is globular, fleshy, tied to the floor of the 

 mouth. The dorsal is fan-shaped ; the first, undivided, ray is situated 

 a little behind the commencement of the posterior third of the back, 

 the caudal not included ; the extent of the base is £ of the head, of 

 which the longest ray is J. The first anal ray is situated behind the 

 dorsal, at the commencement of the posterior fifth of the body ; in 

 shape and dimensions it resembles the dorsal. The caudal is broad 



* Cuvier : Regne Animal, II. 368 (*). 



