ZEIDiE. CENTRONOTINjE. 247 



forwards ; hinder dorsal, caudal, and anal covered 

 with minute scales ; ventral fins very small. 

 P. cyanophrys. Cuv. pi, 265. 



Platylepes Sw. Body ohlong, oval ; mouth large, ob- 

 liquely vertical ; lower jaw longest ; both jaws with 

 numerous small teeth, and two much larger at their 

 tips ; lateral line formed of a row of flat smooth 

 scales, larger than the others; the hinder fins with 

 minute scales at their base ; ventral fin small. 

 P. lactaria. Cuv. pi. 261. 



SiGANUs * Forskill. Body oval ; a recumbent spine in 

 front of the dorsal fin, which is single, long, deeply 

 emarginate, with more spinal than soft rays ; ventral 

 fins moderate, attached to the body by a membrane ; 

 the two outermost rays simple and spinous, the three 

 intermediate branched ; mouth small, with com- 

 pressed and emarginate teeth ; pectorals small, 

 pointed ; colours bright : analogous to Labrus. 

 Forskillii. Riipp. i. pi, 33. doliatus. Griff, pi. S3. 1. 



Argylepes Sw. Body oval, naked; dorsal fin single, 

 high before, narrow behind ; the posterior rays short, 

 and very remote ; anal with two spines before the 

 base ; lateral line central, slightly bent downwards f ; 

 pectoral moderate, falcate ; eyes large ; mouth very 

 small; '^'^the teeth linear;" tongue and palate smooth.;}; 

 A. Indica, Russ, pi, 156, {Mitta Parah.) 



Trachinus Sw. Pectoral fins large and falcated ; 

 lateral line almost always armed with a series of 

 large, spined, imbricate scales, particularly towards the 

 end of the tail §; body not much compressed, smooth, 



* The procumbent advanced spine before the dorsal induces me to place 

 this genus between Seriola and Caranx rather than with the Acanthuri. It 

 seems to represent the Labrince in this family, and to have an affinity with 

 Psenes. 



f I strongly suspect that Dr. Russell has mistaken the lateral impression 

 along the vertebra for the real lateral line, which is probably obsolete. 



t I have arranged this singular fish in the confines of this family, as hav- 

 ing some relation to Sigunus in its small mouth and single dorsal, and to 

 Caranx in its general form ; but Dr, Russell's description is not sufficiently 

 precise to determine all its characters : it seems in some respects allied to 

 Equtda. 



^ Excepting only the three first or aberrant sub-genera, 



R 4 



