FAillLY, XL— GLTPHIDODONTID^. 383 



3. Pomacentrus bifasciatus. 

 Bleeker, Floris, p. 330 ; Giinther, Catal. iy, p. 18. 

 B. V, D. J-J, P. 17, V. 1/5, A. T^?^, C. 17, L. 1. (25) 28, L. tr. 3/9. 



Length of head 4, of caudal 4, height of body 2-§- in the total length. Eyes — diameter 2|- in length of 

 head, 2/3 of a diameter from end of snout, and 1 apart. Preorbital and suborbital ring of bones entire, vertical 

 limb of preopercle serrated. Greatest depth of preorbital is not equal to 1/2 a diameter of the eye. Colours — 

 yellow, with a curved blue line on the preorbital : a black band from the nape over the opercles, and a second 

 from the last dorsal spines, descending from the fin and going to below the lateral-line. Fins yellow, except a 

 black mark on the dorsal being the commencement of the second band. 



I captured a single specimen 1'8 inches in length at the Andamans. 



Habitat. — Andamans and Malay Archipelago. 



4. Pomacentrus Bankanensis. 



Bleeker, Sumatra, iii, p. 513 ; Giinther, Catal. iv, p. 2(3. 

 Pomacentrus tceniops, Bleeker, Banka, ii, p. 729 (not Cuv. and Val.). 



B. V, D. if, P. 16, V. 1/5, A. „?TT, C. 17, L. 1. 20-28, L. tr. 3/9. 



Length of head 3^, of caudal 4i, height of Ijody 2^ to 2| in the total length. Eyes — diameter 2f in 

 length of head, 1/2 to 3/4 of a diameter from end of snout, and 2/3 to 1 diameter apart. Preorbital narrow, entire: 

 suborbital ring serrated in the adult, entire in the immature : postei'ior limb of preopercle serrated. Fins — the 

 dorsal sjaincs increase in length posteriorly : caudal slightly emarginate. Colours — brownish, two narrow blue 

 lines along the forehead anteriorly converging on the snout and posteriorly extended on to the back : two more 

 through the eye to the maxilla. A dark blue mark on the opercle : and a line of blue spots along the cheeks 

 below the suborbital ring of bones : each scale with a blue spot, and a black white-edged ocellus at the base of 

 the second to the sixth dorsal rays, and sometimes another across the back of the free jjortion of the tail behind 

 the base of the dorsal fin. Ventral nearly black. 



P. tripunctatus, Cuv. and Val. v, p. 421, a species of which I have not seen the type, appears closely 

 allied to, if not identical with, the above. 



Habitat. — Andamans and Nicobars to the Malay Archipelago and beyond. 



5. Pomacentrus littoralus. 



(Kuhl. and v. Hass.) Cuv. and Val. v, p. 425 ; Sclilegel, Overz. Amph. &c. in Verh. Nat. Gen. Ned. 

 Overz. Bezitt. p. 20, t. iv, f. 3 ; Bleeker, Batav. p. 483 ; Giinther, Catal. iv, p. 32. 

 Pomacentrus pristiger, Cuv. and Val. ix, p. 506. 



Pomacentrus hogolenensis, Hombr. and Jacq. Voy. Pole Sud, Poiss. p. 47, pi. v, f. 3. 

 Pomacentrus hatunko, Bleeker, Timor, p. 169. 



B. V, D. -H, P- 18, V. 1/5, A. tV, C. 15, L. 1. 27, L. tr. 3i/9. 



Length of head 4i, of caudal 4j, height of body 2| in the total length. Eyes — diameter 3^ in length of 

 head, 1 diameter from end of snout, and also apart. Greatest depth of preorbital equals 1/2 the diameter of the 

 eye. Suborbital ring of bones seiTated, the anterior denticulation being the strongest : preopercle serrated 

 along its vertical limb. Fins — dorsal spines increase in length posteriorly : caudal with rounded lobes. 

 Colours — olive, with vertical or round bluish spots on the scales. A black spot at the commencement of the 

 lateral-line, another at the base of the pectoral fin, and a third over a free portion of the tail behind the end of 

 the dorsal fin. 



Habitat. — Andamans to the Malay Archipelago and Australia. 



6. Pomacentrus Jerdoni, Plate LXXK, fig. 7. 

 Day, Proc. Z. S. 1873, p. 237. 

 B. iv, D. fl, P. 17, V. 1/5, A. ^V. C. 17, L. 1. 34, L. tr. 5/11. 



Length of head 5, of caudal 4 to 4^, height of body 3| in the total length. Eyes — diameter 1/3 of length 

 of head, 3/4 of a diameter from end of snout, and 1 apart. Preorbital entire, much longer than deep. Pre- 

 opercle finely seiTated on its vertical margin, more coarsely at its angle : opercle with two spines : angle of 

 opercle slightly serrated as well as the contiguous portions of the subopercle : the infraorbital ring narrow, 

 entire, and scaleless. Teeth — compressed into a single row of about thirty. Fins — dorsal spines increase in 

 length posteriorly : soft dorsal and anal pointed : caudal lobes, especially the upper, produced : second anal 

 spine longest and strongest : the ventral reaches the anal : pectoral rounded, as long as the head without the 

 snout. Lateral-line — its tubular portion ceasing below the end of the soft dorsal. Colours— olive, becoming 

 light below : seven rows of light blue spots running across the gill cover, one row along the suborbitals, and 

 one over the snout. A row of light lines along the centre of the scales on the sides. A black spot at the base 

 of the pectoral. Fins dark coloured. Base of caudal and the anal barred with fight lines. 



The pseudobranchias are well developed. This is probably the species mentioned but not named by Dr. 

 Jerdon (M. J. L. and Sc. 1851, p. 133), and which he obtained at Madras. 



