ZOOLOGY. 2^7 



River Gambia, where it abounds, as the captain fish, and where it is much 

 esteemed for the table. There are 4 or 5 small teeth in the front of the 

 upper jaw, the teeth of the lower are e?j velours ; the dorsal fin has 9 

 strong spines and 29 rays, the caudal 18 rays, the anal 1 spine and 7 

 rays, the ventral ] spine and 7 rays, and the pectoral 1 spine and 16 

 rays ; the body of the fish is silvery, with an azure tinge on the back, and 

 a red tint near the tail ; the anal fin is red, the ventral yellow, and the 

 rest are gray ; the scales of the head are indistinct, but those of the 

 body are very large ; the lateral line is prolonged to the end of the 

 caudal fin. Gambia. 



18_. Vomer Brownii, Cuv. St. Jago and Gambia. 

 19. Lichia Tetracantha, new species, Bowd., fig. 49. 



The teeth are en velours ; the pre-operculum is radiated at the edge, and 

 the operculum is slightly undulated ; there are 4 short strong spines in 

 front of the dorsal fin, to each of which is attached a membrane, so as to 

 give it the appearance of a very small fin ; the rest of the fin has 25 rays, 

 the caudal 20, the anal 24, with 2 short spines, the pectoral 14 ; the 

 scales are scarcely visible ; the whole fish has a bright silvery appear- 

 ance, tinged with a beautiful deep blue. St. Jago and the Gambia. 



Fig. 41 and 51 are new genera, both belonging to Cuvier's division 

 Acanthopterygiens, the first part of the dorsal fin being supported by 

 spines, and the anal having one or more spines ; they approach nearest 

 to the third family, or the Labroides, from the strength of the spines, and 

 the fleshy lips, but I am at a loss to class them further. 



Fig. 51, which I have distinguished by the name of Anomalodon incisus, 

 has a row of teeth en carde in the upper, and a broad confused band of the same 

 in the lower jaw ; the dorsal fin has 1 1 strong spines, 3 of which are shorter 

 than the rest, and 15 rays; it is supported by a fleshy ridge; the ventral 

 has 3 spines and 10 rays ; the body is silvery, slightly tinged with yellow, 

 and speckled with gray; the back, head, and dorsal fin are gray, the 

 other fins are yellow ; the division between the spiny and soft part of 

 the dorsal is sloped almost to the base ; the opercula are entire ; the scales 

 are small, and the lateral line is formed of a ridge of very small pro- 

 jections. Gambia. 



