26. SERRANUS, 151 



the former having a yellow edge, the latter a black one ; ventral and 

 pectoral fina with scattered blackioh spots. (Bl. ) 

 Sea of Batavia. (New Guinea.) 



119. Serranus chlorostigma. 

 Cuv. ^ Val. u. p. 352. 



Caudalis truncated. Praeoperculum finely serrated, with five or six 

 rather stronger teeth at the angle ; sub- and interoperculum with 

 some denticulations. Whitish, entirely covered with small olive 

 spots ; spinous part of the dorsal fin edged with black, caudahs with 

 white. 



Seychelles. 



120. Serranus cylindricus. (Plate XI. fig. A.) 



B. 7. D.|^. A.|. L. lat. 100. 



Body elongate, rounded, rather cylindrical; the height 4i- in 

 the total length, the length of the head 3§ ; the breadth equal to 

 three-quarters of the height. Caiidalis rounded. Praeopereuhim 

 rounded, with fine denticulations behind ; the upper maxiUary bone 

 reaching beyond the posterior margin of the eye. Covered with more 

 or less regular hexagonal brown spots, separated from each other by 

 white lines. 



a. Adult. Madagascar. Presented by Dr. J. E. Gray. 



Description. — fhe form of the body is more elongate and cylindrical 

 than in any other species of Serranus, and might be compared with 

 that of a Blennius. The height is contained 4i in the total length, 

 and is only one-fourth more than the breadth. The head has a conical 

 form, its length being contained 3|^ in the total. Between the vertex 

 and the neck is a slight concavity, as between the eyes, the distance 

 of which is about |^ths of the diameter of the eye ; the latter is 4i in 

 the length of the head, and nearly equal to the distance between the 

 eye and the end of the snout ; the nostrils are near together. The 

 upper maxillary bone reaches a little behind the posterior margin of 

 the eye. AU the head is covered with minute scales, except the thick 

 and fleshy lips. Lower jaw longest. The praeoperculum is rounded 

 throughout, finely serrated behind, and with some rather stronger 

 denticulations at the angle ; its lower limb, the sub- and inter- 

 operculum are entire ; operculum with three spines, the two lower of 

 which are prominent between the scales, the upper (smallest) being 

 hidden by them ; it terminates in a very long triangular membra- 

 naceous flap. 



The margins of the spinous and soft portions of the dorsalis are 

 shghtly convex, both being nearly equal in height ; the former has 

 a not much longer base than the soft ; the first spine is only one-half 

 the length of the second, the second three-quarters of the^ third ; the 

 fourth, fifth and sixth are longest ; the following diminish incon- 



