FAMILY POMACENTRIDAE — WOODS AND SCHXILTZ 99 



scale rows from upper edge of gill opening to base of caudal rays 28 

 (rarely 27), Vvdth 2}^ between end of lateral line and scaly dorsal sheath, 

 10 between lateral line and origin of anal; upper part of lateral line with 

 20 tubular scales; gill rakers 1 or 2 + 1 + 8 or 9, totahng 10 to 12 (4 

 counts) . 



Depth of body 2.1 to 2.3; head 3.0 to 3.1 ; both in standard length. 

 Snout 3.6 to 3.8; eye 2.8 to 3.2; preorbital width 6.9 to 10.4; length of 

 upper jaw 3.6 to 4.4; postorbital part of head (hind margin of eye to 

 upper edge of gill opening) 2.6 to 2.9; interorbital width 3.6 to 3.9; 

 depth of caudal peduncle 2.2 to 2.4; length of pectoral fin 1.2 to 1.3; 

 of pelvic fin 1.1 to 1.3; of second dorsal spine 1.7 to 2.0, of upper caudal 

 rays 1.0 to 1.1, of lower caudal v&js 1.2 to 2.0; all in length of head 

 (tip of snout to hind margin of opercular membrane). Depth of 

 caudal peduncle in its length 1.4; angle of snout profile with length- 

 wise axis of body 50 degrees, snout profile convex. 



Teeth of jaws slender, curved, round-tipped, close set, in a single 

 row and somewhat protruding, preorbital with shallow notch, naked, 

 suborbital with 2 or 3 large very thin widely spaced scales; scales on 

 top of head anterior to front margin of eye but not reaching nostrils; 

 interorbital convex; preopercular margin naked; opercidar spine rela- 

 tively strong, sharp; gill rakers weak, widely spaced, the 1 or 2 on 

 upper arch close to angle, rest of upper arch smooth, enlarged, fleshy; 

 second or third dorsal spine longest, next 2 or 3 subequal then grad- 

 ually decreasing in size to last, which is not set closely against soft 

 rays; soft dorsal outline angular, anal rounded, caudal lobes rounded, 

 pelvics with outer ray filamentous though not much elongated, 

 pectoral rounded. 



Color in alcohol. — Generally whitish, with dorsal part of head light 

 dusky; lower lip pale, upper lip and tip of snout dusky; top of head 

 dark grayish or grayish bro^vn; eye with intense black spot between 

 pupil and upper margin; sides above lateral line dark grayish brown, 

 the bases of the scales with dark curved line margins pale; dorsal edge 

 of caudal peduncle with a narrow dark line or at least darker than 

 sides below lateral line; body generally uniformly pale yellowish, 

 though some specimens show thin vertical brown lines following scale 

 rows, these formed by darker basal lines on scales; fins generally all 

 pale transparent, though some dark specimens with spiny dorsal 

 membranes faintly dusky. Specimens 30 mm. and shorter may have 

 a small dusky spot at rear base of soft dorsal fin. 



Remarks. — Fowler (Proc. Acad. Nat. Sci. Philadelphia, vol. 93, 

 p. 266, fig. 7, 1941) has made this species the type of a separate genus, 

 Oliglyphisodon, ''distinguished from Ahudejduf chiefly by its reduced 

 gill rakers." In his description the number of giU rakers is given as 

 7 on the lower branch. We have found 8 or 9 in four specimens ex- 



