122 PERCID,!;. 



illary bone gradually widens from the front towards behind, and is 

 moreover distinguished by a prominent triangular process at the 

 hinder, lower angle. The proeoperculum has a rounded angle and 

 rather convex limbs, the posterior of which is minutely serrated ; 

 the operculum with three long, pointed, veiy prominent spines, and 

 deep notches between, the upper one more distant and the middle 

 one rather longer; the sub- and interoperculum are serrated, the 

 former along the anterior half of its length, and produced into an 

 elongate point behind. There are, above and beneath, two pairs of 

 strong canine teeth ; otherwise the dentition is very similar to that 

 of -S. coronatus, except in the posterior front teeth being much shorter. 

 The fii'st iuterhgemal spine is of moderate development, being equal 

 to the length of the first six vertebrae ; it is fixed to the haemal of 

 the eleventh vertebra. 



48. Serranus sonnerati. 



Perca rubra, Sonnerat. 



Serranus sonnerati, Cuv. 8f Val. ii. p. 299. 



D. -^. A. i-. 



14-15 9 



Caudahs rounded ; praeoperculum with a few obsolete denticula- 

 tions. Uniform brownish (in spirits) ; head, in life, with reticulated 

 blue lines. 



Coasts of Pondicherry, Ceylon, and Sumatra; Louisiade Archi- 

 pelago. 



a. Adult. Sumatra. From Mr. Frank's Collection. 

 h, c. Half-grown : stuffed. Louisiade Archipelago. From the 

 Voyage of the Rattlesnake - 



49. Serranus urodelus. 



Perca lu-odela, Forsf. Descr. Anim. Cur. Lichtenst. p. 221. 

 Serranus urodelus, Cuv. Sf Val. ii. p. 30G, vi. p. 513; Bleek. Kokos- 

 eilandeHf p. 39, 



D. ±. A. |. L. lat. 85. 



Caudalis rounded. Sub- and interoperculum slightly denticulated 

 where they are joined ; praeoperculum entire below, finely serrated 

 behind ; operculum v^^th three conspicuous spines. Maxillary bone 

 reaching far behind the level of the eye ; the diameter of the eye 

 one-sixth of the length of the bead ; length of the head one-third of 

 the total. Unifoi-m brown (in spirits) ; hinder half of the dorsal fin, 

 caudalis, and analis with pale (in life red and blue) spots ; caudaUs 

 with two oblique whitish bands, convergent posteriorly. 



Amboyna ; Caroline and Kokos Islands. 



a. Large specimen. India. 



b. Adult. Amboyua. From Mr. Frnnk's Collection. 



