388 ACANTHOPTEEYGII. 



along the suborbital ring of bones, and one or two along tbe cbeeks. In some specimens there is a spot of blue 

 on many of the scales of the, body. » , . , 



Habitat. -From the Red Sea through those of India to the Malay Archipelago and beyond. The 

 specimens figured (life-size) are from the Andamans. 



9. Glyphidodon leueogaster, Plate LXXXI, fig. 3. 



Bleeker, Labr. Cten. p. 26 ; GQnther, Oatal. iv, p. 46 ; Klunz. Verb. z. b. Ges. Wien, 1871, p. 523. 



B. y, D. ^.H, P- 1?, V. 1/5, A. ^l-^, C. 17, L. 1. 26-28, L. tr. 3/12. 



Length of head 4|, of caudal 4^, height of body 21 in the total length. %es— diameter 2| in length of 

 head, 2/3 of a diameter from end of snout, and 1^ apart. Preorbital with a shallow notch, its greatest width 

 equals nearly 1 diameter of the eye: suborbital ring narrow. Teei^— narrow, about 46 in the upper jaw. 

 Fins—A.OTSsl spines, after the second, subequal in length : soft portion of dorsal rather pointed.- Second anal 

 spine as long as the head excluding the snout, the soft portion of the fin rounded. Caudal forked with pointed 

 lobes. ScaZes— extend forward on the top of the head to the snout, they also cover the preorbital and suborbitals. 

 Colours — olive-brown, becoming lighter on the sides and yellowish on the abdomen. Upper edge of dorsal and 

 outer two-thirds of anal black, the rest of the fin and the ventral yellow. Outer margin of caudal dark. A 

 black spot at base of pectoral fin. 



Habitat.— Red. Sea, East coast of Africa, Nicobars to the Malay Archipelago. The one figured (life-size) 

 is from the latter locality, for it I have to thank Professor Schlegel and Dr. Hubrecht of Leyden. 



10. Glyphidodon modestus, Plate LXXXI, fig. 6. 



Schleg. Overz. Amphr. &c. in Verb. Nat. Gesch. Ned. Overz. Bezitt. p. 23, t. vi, f . 2 ; Bleeker, Sumatra, 

 ii, p. 285 ; Giinther, Catal. iv, p. 55 ; Kner, Novara Pische, p. 246. 



B. V, D. if, P. 18, V. 1/5, A. T^, C. 16, L. 1. 23-24, L. tr. 2i/8. 



Length of head 4^, of caudal 5, height of body 3^ in the total length. J/yes —diameter 2| to 3 in length 

 of head, 2/3 to 3/4 of a diameter from end of snout, and 1 apart. The greatest depth of the preorbital is a 

 little more than half the diameter of the eye, posteriorly the suborbital ring of bones rapidly narrows. Teeth — 

 compressed, notched at their extremities, and about 36 in the upper jaw. Fins — the dorsal spines gradually 

 increase in length to the last, soft dorsal and anal somewhat rounded, caudal slightly cleft and having rounded 

 lobes. ScaZes^extend forward on the top of the head to opposite the front edge of the eye : none on the 

 preorbital or suborbital ring of bones. Colours — yellomsh-olive, becoming lighter on the sides and beneath : 

 the outer third of dorsal and anal fins grayish : a brownish dot superiorly at the base of the pectoral fin. 



Habitat. — Andamans through the seas of India to China. The one figured (life-size) is from the 

 Andamans. 



11. Glyphidodon Sindensis, Plate LXXXII, fig. 2. 



Day, Sea Fishery Report, 1873, Appendix, p. cclxiii. 



B. V, D. yJ L, P. 19, V. 1/5, A. XT?TT. 0. 15, L. 1. 26, L. tr. 3|/10. 



Length of head 3f to 4, of caudal 4j to 4|, height of body 2f to 3 in the total length. Hi/es — diameter 3 in 

 length of head, 1/2 a diameter from end of snout, and 1 apart. Preorbital in its widest part not equal to 1/3 of the 

 diameter of the eye, suborbital ring of bones narrow. Teeth — in a narrow row, about 60 in the upper jaw, their 

 summits notched. Fins— dorsal spines increase to the fourth, all the posterior ones about equal : soft dorsal rather 

 produced in its centre : caudal forked, upper lobe the longer, and may be produced, more esjjecially in the 

 young : pectoral rounded, as long as head without the snout : soft dorsal and anal scaled. Scales — on the 

 summit of the head extend forward as far as the snout, also on pre- and sub-orbitals. Colours — deep violet, 

 extending on to the dorsal and anal fins : pectoral hyaline with a dark mai'k at its base : ventral nearly black : 

 the posterior extremities of the dorsal and caudal canary yellow : all the scales on the upper part of the body 

 and free portion of the tail with a light blue central spot. Some blue lines abotit the head in the young, which 

 has also the free portion of the tail yellow and the chest light coloured. 



Habitat.— 'NnmeTOus in the harbour at Kurrachee in Siad. The one figured (^life-size) is from that 

 locality, where I did not obtain them larger. 



Genus, 6 — Heliastes, Cvni. amd Vol. 

 FwreaHa, Poey. 



Branehiostegals five : pseudobranchice. All the opereles entire. Teeth in the jaivs conical, in a narrow and 

 irregula/r row._ Scales of moderate size. Dorsal fin with 12 to li spines : amal with two. Lateral-line im, a tubular 

 form not contvmed beyond the end of the base of the^ dorsal fin. Air-vessel present. Pyloric appendages two. 



SYNOPSIS OF INDIVIDUAL SPECIES. 



^ XT- ■?; ,^«^\*«*«« lepidwrus, D. ^;i|, A. ^, L. 1. 26-27. Olive, scales with a blue dot. East coast of Africa 

 to the Malay Archipelago and beyond. 



