FAMILY POMACENTRIDAE — WOODS AND SCHULTZ 65 



Description. — Dorsal fin rays XII, 15; anal rays 11,14; pectoral 

 rays ii,18 or 19 ; scale rows, upper edge of gill opening to base of caudal 

 rays 27 or 28, base of dorsal to lateral line 4; lateral line to origin of 

 anal 10 or 11 ; gill rakers 7+1 + 15 to 17 totaling 23 to 25. 



Depth of body 1.5; head 3.3; both in standard length. Snout 

 3.2 to 3.7; eye 2.4 to 2.9; preorbital width 6.2 to 7.6; upper jaw 3.0 to 

 3.3; postorbital part of head (hind margin of eye to upper edge of gill 

 opening) 3.1 to 4.0; interorbital width 2.6 to 2.7; depth of caudal 

 peduncle 1.6 to 1.8; length of pectoral fin 0.9 to 1.0, of pelvics 0.7 

 to 0.8, of second dorsal spine 1.2 to 1.3, of upper caudal rays 0.9; 

 all in length of head (tip of snout to hind margin opercle). Depth of 

 caudal peduncle in its length 1.0 to 1.15; angle of snout profile with 

 lengthwise axis of body 78 to 80 degrees, snout profile slightly concave, 

 interorbital convex, upper profile convex. 



Shape of body oval in young, anterior profde much steeper in adults; 

 preorbital, suborbital, and preopercle very fmely serrated; opercle 

 with broad flat triangular spine, its apex somewhat rounded, lower 

 portion of opercle serrated; scales on snout to tip; first dorsal spine 

 short, about half the length of second, second and thhd subequal, 

 fifth or sixth dorsal and anal soft rays longest, soft dorsal outlme some- 

 what pointed, anal less so; upper caudal lobe longer than lower, caudal 

 fin slightly forked, caudal with two free spines, above and below near 

 its base. 



Color in alcohol— Dark reddish browTi to brownish black in large 

 specimens, lips blackish, a small white spot about size of pupil on and 

 just above eleventh to thirteenth lateral-line scales, this spot usually 

 fainter and sometimes absent in large specimens; a white nuchal spot 

 about same size as lateral spot sometimes present; spiny dorsal mem- 

 branes and spines blackish; soft dorsal black where covered with 

 scales, naked portion pale; pelvics, anal, and caudal entirely black; 

 pectorals black basally, usually with small, very black spot just above 

 upper edge of base, rays light tan, membranes hyaline. 



Remarks.— Small specimens from the Philippines (19 to 39 mm.) 

 were found to resemble the adults in having the white spot on the 

 sides no larger than the pupil. The general body color was somewhat 

 lighter, the scales having pale centers and dark brown margins, lips 

 dark brown, fins as described in adults. These young of D. trimacu- 

 latus are not at all like the 3 specimens of comparable size m the type 

 series of D. albisella Gill from Honolulu (USNM 6274), which have the 

 head and breast paler than the back and the sides with a large white 

 spot or bar 6 to 8 scales wide (much larger than the eye), and in which 

 the scale margins are pale with bases dark. 



Specimens of trimaculatus from the Marshall, Gilbert, Phoenix, and 

 Samoan Islands have the naked part of the soft dorsal fin white or 



