PTEBOIS. FISHES. 461 



cesses at the pectoral fins. 12 inches long. Inhabits Indian 

 seas Shaw, iv. 279. 



Gen. 63. PTEROIS, Cuv. 



Head covered with unequal tubercles and fleshy appendages ; 

 rays of the dorsal and pectoral fins very long, surpassing the 

 membranes ; a swimming-vessel. 



P. volitans, Cuv. Head truncated, broad before and compressed on 

 the sides, furnished with spines and broad dentated cirri ; body 

 brownish yellow, with deep brown transverse bands ; pectoral fins 

 extremely large, deep violet, spotted with white. 12 inches long. 

 Inhabits rivers of Japan Block, pi. 184. 



P. antennata. Head rough, spinous ; two cylindric tentacula over 

 the eyes, surrounded by fibrous brown bars ; body variegated 

 with brown and yellow transverse stripes, and a brown band 

 across the eyes ; rays of the pectoral fins white, simple, and very 

 long. 12 inches long. Rivers of Amboyna. Shaw, iv. pi. 39. 



Gen. 64. T^NIANOTUS, Lacep. 



One or more spines and no dentations on the operculi; body much 

 compressed vertically ; dorsal fin long, the spinous part not 

 distinguished from the soft, but forming an extended vertical 

 riband along the back, commencing between the eyes. 



T. triacanthus, Lacep. With cirri on the eyebrows. Lacep. iv. 306. 



T. latovitfatns, Lacep. General colour blue, with a longitudinal 

 black and very broad band on each side ; dorsal and anal fins 

 spotted with brown. 2 feet long. Inhabits Indian seas. Lacep. iv. 

 pi. 3, fig. 2. 



SECTION II. Dorsal fin deeply divided, or two distinct 

 dorsaljins. 



This section have the dorsal fin divided, or two distinct fins. Their teeth are ge- 

 nerally very small, crowded and hooked. Cuvier divides this section into tribes. 



1. Head without spines. 

 Gen. 65. ATHERINA, Lin. 



Body oblong; intermaxillaries extensible, with very small teeth ; 

 lower jaw and tongue smooth ; five rays in the branchial 

 membrane ; cheeks and operculi scaly ; two small dorsal fins ; 

 a silvery band on the sides. 



A. hepselus, Lin. Body brownish above, silvery below, and gray 

 on the sides, diaphanous ; with a broad longitudinal silver band 

 on each side ; fins and tail white. 6 or 7 inches long. Inhabits 

 Mediterranean sea. Bloch, pi. 393, fig. 3. 



A. Sihama, Cuv. Body bluish green, lanceolate, subpellucid ; sil- 

 very band obscure. 9 inches long. Red Sea. Shaw, v. 132. 



Gen. 66. SPHYR^NA, Lacepede. 

 Body elongated ; snout pointed ; jaws much cleft ; under jaw 



