26. SEHHANUS. 151 



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

 pectoral fins Avith scattered blackish spots. {Bl.) 

 Sea of Batavia. (New Guinea.) 



119. Serranus chlorostigma. 



Cut: ^- Val. ii. p. o52. 



Caudalis truncated. Praeopcrculum finely serrated, with five or six 

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

 some dcnticulations. Whitish, entii-ely covered with small olive 

 spots ; si)inous part of the dorsal fin edged with black, caudalis with 

 white. 



Seychelles. 



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



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



Body elongate, rounded, rather cylindncal ; the height 44- in 

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

 thi'ce- quarters of the height. Caudalis rounded. Prtcoperculum 

 rounded, with fine dcnticulations behind ; the upper maxiUai-y bone 

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

 or less regular hexagonal brown spots, separated fi-om each other by 

 white lines. 



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



Descrqjtion. — The 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 4^ in the total length, 

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

 foi-m, 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 f 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 behiiul the posterior margin of 

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

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

 throughout, finely serrated behind, and with some rather stronger 

 dcnticulations 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 dorsaJis are 

 slightly 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, tilth and sixth are longest ; the following diminish incon- 



