CHETODONID.E. — SCSlNINiE. 



217 



^-.^^•S;^ 



Amphiprion Bloch. Obovate ; the head and fore parts 

 being broader and 

 thicker than the 

 posterior half; dor- 

 sal more or less 

 emarginate; ventral 

 fin nearly as large 

 as the pectoral; the 

 preoperculura and 

 the three plates of 

 the operculum very ^g 

 strongly and re- ^ 

 markably serrated 

 at their edges^ and 

 grooved on their 

 surface ; the sub-orbital plates often spined ; mouth 

 subvertical. 



* Caudal fin rounded. 



A. punicatus. Lesson. Atl. laticlavis. Cuv. pi. 132. fig. 1. 

 pi. 25. fig. 3. 



* * Caudal slightly lunated. 

 chrysogaster. Lesson. Atl. pi. 28. fig. 3. 



Premnas Cuv. A very strong spine on the sub-orbital 

 plate; in other respects resembling Amphiprion ; 

 caudal fin rounded ; mouth small, horizontal. 

 P semicinctus. Cuv. pi. 133. 



Pomacentrus Lac. {fig. 53.) Body oval ; the profile of 

 the head and the 

 throat equally cur- 

 ved; mouth small; 

 lips thick ; eyes ra- 

 ther large, very near 

 the snout ; teeth 

 cutting, emargin- 

 ate in one or more 

 rows ; anal mo- 

 derate ; pectoral rounded ; caudal slightly forked ; the 



