MONOCHIRUS. FISHES. 429 



distant blackish spots, pale in the centre. Size of the common 

 Sole. Inhabits Mediterranean sea. Shaw, iv. 307- 



S. zebra, Cuv. Zebra Sole. Body elongated, pale brownish above, 

 and marked from head to tail by numerous double deep brown 

 transverse bands passing across the fins ; scales rough and den- 

 tated. Inhabits Indian seas. Shaw, iv. pi. 44. 



S. plagiusa, Cuv. Body grayish brown, with the dorsal, caudal, and 

 anal fins united ; scales rough. American seas Shaw, iv. 306. 



Gen. 15. MONOOHIRUS,CUV. Pleurojiectes, Lin. 

 One very small pectoral fin on the eye side, that on the opposite 

 side imperceptible. 



M. microcJdrus, Cuv. (P. microchirus, Laroche.) Body oblong, pale 

 brown ; mouth wide ; tongue round and long. Inhabits Mediter- 

 ranean sea. An. Mus. xiii. 356. 



Gen. 16. ACHIRUS, Lacepede. Pleuronectes, Lin. 

 Head, body, and tail much compressed ; eyes on the same side 

 of the head ; no pectoral fins. 



A. marmoratus, Cuv. Body brown, variegated or marbled with milk 

 white spots and marks ; fins marbled with gray and blue, with 

 black points ; a row of pores along the base of the dorsal and anal 

 fins. Inhabits Indian seas. Shaw, iv. 310. 



A. bilineatus, Cuv. Body thin and elongated, pale brown above, 

 rufous white beneath ; scales small, round, and denticulated ; dor- 

 sal and anal fins united to the caudal j two lateral lines on each 

 side, one along the middle, the other near the back. Inhabits 

 Chinese seas. Block, pi, 188. 



FAMILY. III. DISCOBOLI, Cuv. 



This family are so named on account of their ventral fins being united at the base 

 by a membrane into a disk-like form. 



Gen. 17. LEPADOGASTER, Gouan. Cyctopterus, Shaw, 

 Pectoral fins double, and the under united in the form of a disc 

 under the throat by a transverse membrane ; head broad and 

 depressed ; snout projecting and extensible ; body smooth and 

 without scales ; one soft dorsal fin. 



The species of this and the following genus are generally small. Their pectoral fins 

 are large and united under the throat by a transverse membrane directed forwards ; 

 another transverse membrane directed backwards, fixed to the pelvis, and prolonged 

 on the sides, supplies the place of ventral fins. Their body is smooth and without 

 scales ; their head broad and depressed ; they have but one soft dorsal fin opposite 

 the anal ; and they are destitute of a swimming-bladder. 



L. Cornubiensis, The Cornish Sucker. Body taper, reddish, with 

 dusky spots ; snout depressed, elongated, and rounded ; two ocel- 

 lated purple marks behind the eyes, with a blue point in the cen- 

 tre ; dorsal fin with eleven rays. 4 inches long. Inhabits British 

 seas. Shaw, v. 397- 



L. bimaculatus. Head flat and tumid ; snout conical ; body slender, 



