8. iioLocENnuM. 43 



ones besides ; the hypobranehiiils are separated Iroin one another, 

 elongate, triangular, and entiiely covered with viUitbrm teeth. 



The pnmrhital is scarcely widened in front, but armed with a 

 strong, thick, and striated spinous tooth; several small ones follow 

 posteriorly, but they are scarcely larger than the reniaiiuler of tlic 

 serraturo of the infraorbital arch. The anterior end of tlie turhhud 

 bone is broad and obtuse. 



The serraturo of all the opcrclcs is veiy distinct and complete ; 

 even the scales, covering in a single series the base of the operculum, 

 are similarly striated and serrated ; likewise the suprascapula and 

 the coracoid. But the pncopercular spine is rather short, not much 

 larger than that of the operculum, its length being 2^ in that of 

 the posterior edge of the pra}oi)erculum. 



The vcstihular openhnj is elougnte, ovate, of moderate size. 



The vj-ohj/al as in II. vioJaccum. 



The length of the abdominal part of the virtebral column is l-i 

 in tliat of the caudal. The hajnuil and neural sjnnes ai'c of equal 

 strength. The length of the strongest interha^mal etpuds that of 

 the first seven vertebrae. 



lb. Holocentrum melanotopterum. 



Bleeker, Celebes, viii. p. 302. 



The height of the body is 3^ in the total length, the length of the 

 head 3|— 3^5^. The upper maxillary bone reaches to below the middle 

 of the eye. Operculum with two strong spines, the upjjcr of which 

 is rather longer. The second, third, and fourth dorsal spines longest, 

 but not half as high as the body, and shorter than tlie longest ray ; 

 the lobes of the caudal equal, and oi in tlie total length ; the third 

 anal spine nearly equal to the longest dorsal spine, lied ; the first 

 dorsal black, with rosc-coloiu'ed spots between Ihe middle spines. (Bl.) 



Sea of Celebes. 



19. Holocentrum violaceum. 



Blci'her, Anihoiiia, iv. p. o35. 



D. 11 1 14. A. i L. lat. 3G-37. L. transv. 3/G. Vert. 11/10. 



The height of the body is 3^ in the total length, tlie length of the 

 head 3 -A; the distance between the eyes is 5^ in the latter; the 

 length of the snout is not much less than tlie diameter of the 

 eye ; jaws nearly e(|ual in front ; the turbinal l)one with a bifid 

 process, covering tlu^ intermaxillary. Operculum with (wo Hat 

 spines, distant from one another, the lower of which is tlie smaller ; 

 prajopcrculum with the posterior edge vertical ; the third, fourth, 

 ajid fifth dorsal spines longest, shorter than the pnoopcrcular edge 

 mentioned ; caudal lobes equal ; the thii-d anal spine strong, but 

 one-sixth of the total length only ; v(>ntral and pectoral fins nearly 

 e(]ual in length. Violet ; each scale with a rose-coloured trans\'ersc 



