ZOOLOGY. 233 



Squalus Carcharias? 

 I had no opportunity of examining the numerous sharks of the Gambia, 

 and neighbouring ocean, but they appeared to be of the species common 

 to all seas. 



Tetraodon Laevissimus, Boivd.,&g. 18. 

 This new species of Linnaeus's genus Tetraodon has no spines, nor any 

 visible branchial orifice. The back and sides are of a beautiful rose- 

 colour, irregularly marked with a deep black ; the belly is of a fleshy 

 hue, and the lips are red; the pectoral fin has 13 rays, and the anal, 

 dorsal, and caudal fins, each 7 rays. It is found at Porta Praya, in the 

 Island of St. Jago. 



Balistes Radiata, Bowd., fig. 45. 

 The ventral fin of this species seems to be more decided than that of 

 any yet known, and probably classes it with the sub-genus Triacanthus 

 of Cuvier. Its distinct rays, 8 in number, and its very strong spine, 

 have so positive an appearance, that we with difficulty admit the generic 

 character of having no ventrals. There are two small spines, and a very 

 strong one, in the first dorsal fin, the lower part of which is rayed with 

 blue ; the second dorsal has 27 rays, six of which are considerably 

 prolonged beyond the membraneous part of the fin, they are of a yellow 

 colour, and the rest of the fin is spotted with yellow. The caudal fin 

 has 12 branching rays, the pectoral 13, and the anal 25; the latter is of 

 a blue colour, spotted with brown ; the body of the fish is gray, spotted 

 with black, and lighter towards the belly. There are two large orange 

 patches, and one white spot behind the pectoral fin ; 14 rays of a bright 

 lilac encircle the front of the eye, and there are two rays of the same 

 colour in the iris ; three rows of small scales cover the bottom of the 

 second dorsal and anal fins : the teeth are disposed in the manner 

 represented in fig. 45, b. Found at Porta Praya. 



Hippocampus. 



I only saw a dried specimen, which was too carelessly preserved for me 

 to determine the species, but it was of a considerable size. 



2H 



