382 ACANTHOPTERTGn. 



SYNOPSIS OF SPECIES. 



1. romaccntrus triUnealus, D. f|, A. ■^, L. 1. 28, L. tr. 3/9. One or two blue spots on eacli scale. 

 Ttree to five blue vertical lines on tlie foreliead. A dark spot on operclcs, another across free portion of the 

 taO, a third on the first third of the soft dorsal in the young. Red Sea to the Malay Archipelago and 



2. Pomacentrus trimaculatus, D. yJ-Vr- A-. tt-tt. ^- 1- 27-28, L. tr. 4'9. Greenish yellow, -with the scales 

 on the head spotted with bluish : three black blotches on the back, descending on to the sides. Two blue lines 

 iK'tween the eyes, and a light band over the nape. Andamans to the JSIalay Archipelago. 



3. Pomacentrus hlfasciatus, D. i^, A. ya?^, L. 1. 28, L. tr. 3/9. Yellowish, with two black bands 

 descending from the back to the sides. Andamans and Malay Archipelago. 



4. Pomacentrus BavkaneHsis, D. ^, A. rr-rs- L. 1. 26-28, L. tr. 3/9. Two blue Unes along forehead, two 

 more thi-ongh the eye. Scales on body with blue spots. A black white-edged spot from second to sixth dorsal 

 rays and usually another across the free portion of the tail. Andamans to the Jlalay Archipelago. 



6. Pomacentrus Uttoralus, D. i|, A. y\, L. 1. 27, L. tr. 3|/9. Olive, with blue spots on the scales. A 

 black spot at commencement of the lateral-line, another at base of pectoral fin, and a tlurd across the free 

 portion of the tail. Andamans to Australia. 



6. Pomacentrus Jerdoni, D. if; A. ■^, L. 1. 34, L. tr. 5/11. Olivaceous, blue spots on gill-covers and also 

 on scales of sides. A black spot at base of pectoral. Madras. 



7. Pomacentrus alhnfasckdus, D. ^ Vj ', A. yg^^, L. 1. 26, L. tr. 3/9. Olive, bluish spots on head, a broad 

 vertical yellowish band below last dorsal spines, a round black spot edged with white at base of pectoral. 

 Andamans to the Malay Ai-chipelago. 



8. Pomacentrus imnctatus, D. \Y.\-%, A. -j^^^, L. 1. 27, L. tr. 3^/10. Bluish dots on head and body : a 

 l)lack spot edged anteriorly with white across the base of the last six dorsal rays. Red Sea to the ilalay 

 Archipelago. . , 



9. Pomacentrus laUatus, D. -^J^, A. -^'i^, L. 1. 28, L. tr. S^IOJ. Lips very thick. Brownish, with 

 dark fins. Blue spots on some of the scales of the head and body. Andamans and Nicobars. 



1. Pomacentrus trilineatus. 

 (Ehrenb.) Cuv. and Val v, p. 428 ; Giinther, Catal. iv, p. 25 ; Klunz. Fische Roth. Meer. Verh. z. b. Ges. 



Wien, 1871, p. 522. . . o . 



Pomacentrus hiocellatus, Riipp. N. W. Fische, p. 12/, t. xxxi, f. 3 (younfj). 



B. V, D. if, P. 17, V. 1/5, A. T^, C. 17, L. 1. 28, L, tr. 3/9. 



Length of head from 4 to 4^, of caudal 5i, height of body 2f in the total length. E'f/es— diameter 2| in 

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

 hall a diameter of the eye. Suborbital ring of bones below the eye serrated, and two strong denticulations on 

 the first bone. Two opercular spines. CoZowrs— olivaceous : caudal yellow : each scale with one or two blue 

 spots : three to five blue lines on the forehead, the outer of which are continued on to the nape, and sometimes 

 along the base of the dorsal fin. A dark round spot on the opercle : a black spot margined with blue across 

 the Free portion of the tail. The immature have a similar spot on the anterior third of the soft dorsal. 



EaUtat.—^Qdi Sea, East coast of Africa, Andamans, Kicobars, to the Malay Archipelago and beyond. 



2. Pomacentrus trimaculatus, Plate LXXX, fig. 10. 



Cuv. and Val. v, p. 441 ; Schlegel, Overz. Amph. in Verh. Nat. Ges. Ned. Ind. Overz. Bezitt, p. 20, t. iv, 

 f. 4; Blceker, Batav, p. 481 ; Giinther, Catal. iv, p. 19 (not Riippell, Atl. Fische, p. 39, t. viii, f. 3). 



B. V, D. ^\^, P. 17, V. 1/5, A. y^^y^, C. 17, L. 1. 27-28, L. tr. 4/9. 



Length of head 41 to 4|, of caudal 41 to 4|, height of body 3 to 3^ in the total length, i/yes— diameter 

 3 to 3i in length of head, 1 diameter from end of snout, and also apart. Preorbital entire, the suborbital ring 

 of bones below the eye serrated, as is also the vertical edge of the preopercle. Greatest de]ith of the preorbitiil 

 equals rather above 1/- t^ie diameter of the eye. Fins-ihe posterior dorsal spines are slightly longer than the 

 middle ones ■ caudal emarginate. Scales— a, row of small ones along the bases of dorsal and anal fins. Colours 

 — oreenish-yellow, with three black blotches over the back, the first passing over the head from the origin 

 of^the dorsal fin to the snout: the second from between the seventh and tenth dorsal spmes descends 

 to below the lateral-line : the third from the middle of the soft dorsal also to below the lateral-line. 

 A lio-ht band passes over the nape, and two narrow blue bands go from one orbit to the other, these divide 

 the "anterior blotch into three portions. A light blue line along the suborbital ring of bones and spots on 

 the scales covering the cheeks, and at the bases of dorsal and anal fins. Dorsal and caudal with a narrow dark 

 edge, anal with a broad dark outer margin, having one or two narrow blue lines along its I'ase . . . „ 



jffaiiYai.— Andamans to the ilalay Archipelago and beyond. The specimen figured (life-size) is Irom 

 the Andamans, where the species is not uncommon. 



