'){S SEALIO. 



origin of tlie ninth spine of dorsal, origin of anal is much nearer origin of 

 ventrals than to base of caudal, in fact, the distance between origin of 

 ventrals and anal is considerably less than base of anal. Origin of ventral 

 is midway between anal pore and a \ertical line with ]iosterior margin of 

 iris, the ventral rays are more or less prolonged and filamentous, reaching 

 to the origin of anal. Origin of pectorals is slightly anterior to origin of 

 ventrals. Canclal ratiiei- long and sliai-p-pointed, scarcely emarginate, the 

 upper lobe the longer, lieing longer than head. 



Color in alcohol similar to life color except less bright being orange 

 yellow with a slight brownish ^vash on top of head, fading on shoulder's 

 into the yellow body color. A blue line below eye on preopercle, some 

 blue spots on opercle, a blue line on side of snou.t, a blue line from 

 each side of belly out onto the anal fin -tthere it forms a submarginal blue 

 band, the tips of tlie anterior anal ray<; being black, a nari'ow black tip 

 to spinous doisal, otherwise fins all blight yellow. A black dot at origin 

 of lateral line, another in upper axil of pectoral fin, lips dusky. 



Type is Xo. 4737 from Sitanki Island, Jolo Archipelago. Taken by 

 C. Canonizailo and the writer 1.5 July, 1908. Length, 7.">0 millimeters 

 Five cotypes Xo. 4To(_l were taken at the same time and place. 



This species is related to Poinacentrus popci Evermann and Scale but 

 the coloring is different and the relative location of the anal and ventral 

 fins is quite different. It is also related to P. moluccensis Bleeker, but 

 lias larger scales and a sharp-pointed caudal, with the additional dif- 

 I'ercnees in color markings. 



Pomacentrus elongatus Scale, sp. iiciv. Plate XII, fig. 2. 



Head 3.50; depth 2.15; dorsal XIII, 14; anal II, 15; scales 28, 18 

 pores in lateral line, 14 scales in vertical series; eye 3.10 in head; 

 snout 3.40; interorbital space 3; maxillary 3.40; mandible 3; pectoral 

 equal to head; ventrals longer than head; depth of caudal peduncle 2. 



Body oblong, compressed, rather elongate for this family. Greatest 

 depth in middle of body. Depth of caudal peduncle a fourth greater 

 than its length. 



Anterior profile from dorsal fin to snout evenly curved and about equal 

 to curve of thorax and chin. Interorbital space convex. Snout rounded, 

 its median width being slightly less than its length. Orbital ring strongly 

 toothed, unsealed, very narrow below pupil, becoming wider under anterior 

 of eye, its width at angle of mouth 2 in eye. A rather strong spine at 

 posterior margin of this wide portion. Preopercle denticulate. Mouth 

 small. Maxillary ending under anterior margin of orbit. Mandible 

 ending under anterior margin of pupil. Teeth in two series the second 

 being smaller and less securely fixed and alternating with those of the 

 anterior series. Gill openings large, being carried forward to below 

 anterior margin of orbit, ({ill rakers slender, about 14 on lower limb. 



Scales covering entire body and head, except orbital ring and chin. 



