10 
PERCIDJE. 
19. Serranus hexagonatus. [373, 709.] 
Perea hexagonata, Forster, Descr. Aram. eel. Licht. p. 189. 
Serranus hexagonatus, Cuv. Val. ii. p. 330 ; Giinth. Fish. i. p. 141 ; Peters, Monatsber. Ak. Wiss. 
Berlin, 1865, p. 110; Kner, Novara, Fisch. p. 25*. 
Serranus merra, Cuv. fy Val. ii. p. 325. 
Var. a [373]. Brownish, covered all over with hexagonal spots. Length 5 inches. 
Zanzibar. 
Var. b [373]. The spots are hexagonal, four larger darker blotches, three of which 
are on the base of the dorsal, and one on the back of the tail ; the first is the largest, 
and is situated below the last dorsal spine. Length 6 inches. 
Great Comoro. 
Var. c [373]. With subhexagonal and rounded spots. Length 5 inches. 
Zanzibar. Great Comoro. 
Var. d [709]. With alternate cross bands of lighter and darker spots. Length 
8 inches. 
Zanzibar. 
20. Serranus longispinis. [556.] 
? Serranus gaimardi, Bleek. Nat. Tydschr. Ned. Ind. 1853, Batav. p. 455 ; ?? Quoy Gaim. Voy. 
Astrol. Poiss. p. 656, pi. 3. f. 3; ?? Giinth. Fish. i. p. 150. 
Serranus longispinis, Kner, Novara, Fisclie, p. 27, t. 2. f. 2. 
D. A. §• L. lat. 100. 
The third and fourth dorsal spines longest, and equal to half the length of the head. 
Prseoperculum emarginate above the angle; at it the denticulations are considerably 
stronger. Operculum with two spines. Caudal truncated. Head, body, and all the fins 
with numerous brown spots. The anterior part of the dorsal with a black margin. 
Zanzibar. Madras. 
21. Serranus flavo-cseruleus. [268, 269.] 
Holocentrus flavo-cseruleus, Lacep. iv. p. 366. 
Serranus flavo-cseruleus, Cuv. Sf Val. ii. p. 297; Giinth. Fish. i. 145. 
* Prof. Kner says that he is unable to find the distinction between this species and S. yilberti. If he had 
read with attention the descriptions given, he would have found that the latter is distinguished by much longer 
pectoral fins. 
