PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 133 



which probably changes gradually to blue with age. The adult of 

 eceruleus is washed everywhere on body with clear bright violet-blue, 

 very bright on the pale streaks and markings on body and fins. Fins 

 largely bronze-brown ; caudal mesially light yellowish. 



POMACENTRIDiE. 



125. Pomacentrus leucostictus Miiller & Troscliel. 



About rocks and reefs in clear, rather deep water ] not rare. 



Color in life, dark olive-brown anteriorly, clear yellow, with pearly 

 reflections on sides and below; the caudal peduncle and fin rich golden- 

 yellow. Head olive above, golden below, the colors changing insensibly. 

 Head with numerous spots of dark blue, closer set above ; those before 

 eye and on snout oblong, stripe-like. These spots appear black in life, 

 but in spirits they become intense sky-blue, and ultimately fade to 

 whitish. Each scale of back above lateral line anteriorly with a verti- 

 cally oblong stripe of dark blue. Behind and below these, many scales 

 have each a round point of deep violet. One row of these on upper 

 edge of caudal peduncle on each side, and three partial series below 

 lateral line. Dorsal bluish-black, each scale with a blue point. Last 

 rays of soft dorsal yellow ; a black point at base of last ray. A large 

 blackish blotch on middle of first soft rays. Spinous dorsal with a 

 marginal pale band made of two narrow stripes of bluish, and two of 

 dull orange. Anal golden yellow, its edge dusky, traces of a pale spot 

 at base of last ray. Pectoral yellow, a conspicuous blue spot at base 

 above. Ventrals yellow, tinged with bluish. A blackish blotch on 

 middle of base of lower jaw. 



126. Pomacentrus obscuratus Poey. 



{^Pomacentrus atrocyanexis Poey). 



Kot rare ; in the same localities as the preceding. 



Males sooty blue-black in life, not paler below ; each scale of back 

 and sides with an inconspicuous bronze-olive spot. A faint paler band 

 around caudal i^eduncle. Head with small spots of sky-blue, those 

 before eye oblong. Iris blue and gilt. Spinous dorsal with blue and 

 with bronze spots. Soft dorsal with fine blue points. Dorsal with a 

 submarginal band of paler; this band on spinous dorsal formed of two 

 oblique yellowish stripes with a bluish stripe between them. Caudal 

 black, paler at tip, its base with blue spots. Anal black, with blue 

 points at base. A whitish spot at base of last ray. A conspicuous 

 black spot at base of upper pectoral rays. Xo black blotch on back of 

 tail. Other specimens (females ?) are paler, with faint blue spots on 

 scales of sides, and no blue spots on head or j^ale spot on anal. 



Body rather deep, the anterior profile much convex; interorbital 

 space strongly convex; eye longer than snout, 3^ in head. Preorbital 

 and preopercle sharply serrate. Caudal well forked, the upper lobe the 

 longer, especially in males. Lower limb of preopercle scaly. Head 3^; 



