534 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



Family POMACENTKIDiE. 



ABUDEFDUF RHOMALEUS, new species. 



Head 3.5 in length measured to base of caudal fin; depth 1.8; depth 

 caudal peduncle 6; eye 4.2 in head; interorbital space 2.5; snout 3; 

 D. XII, 15 ; A. II, 13 ; scales in lateral series 24 ; between lateral line and 

 base of dorsal 2; between lateral line and origin of anal 10. 



The body is very deep, the ventral outline much more elevated than 

 the dorsal; dorsal contour evenly curved on anterior half; ventral con- 

 tour oblique and almost straight from chin to breast and nearly hori- 

 zontal from the latter point to anal opening; head short and broad; 

 eye very small, the diameter less than length of snout and equal to 

 about half the width of interorbital space; mouth very small, oblique, 

 the maxillary not reaching much over half way between tip of snout 

 and border of eye. Teeth scarcely flattened, small, simple, fixed, 

 closely apposed, in a single row. Gillrakers slender, the longest equal 

 in length to about half the diameter of eye, 5-15 on first arch. Sub- 

 orbital and preopercle with naked, smooth edges. 



Scales weakly ctenoid; snout naked below and in front of nostrils; 

 suborbital with one row of scales; preopercle with 3; opercle with 3; 

 bases of dorsal, anal, and caudal with large scales above which minute 

 ones extend outward on the membranes; lateral line with pores on IS 

 scales; each scale of the median row on caudal peduncle with a pit 

 near the center. 



Spines and rays of fins very strong; dorsal spines beyond the sixth 

 of about equal height, 2 in head; soft dorsal rounded, the middle rays 

 highest, reaching almost to middle of caudal when depressed, 1.2 in 

 head. Cleft of caudal shallow, the lobes convex, the length equal to 

 that of head. Second anal spine 2 in head; the fin rounded, 1.4 in 

 head; Pectoral rounded, equal in length to head. Outer ray of 

 ventral filamentous, the tip reaching anal opening when the fin is 

 depressed. 



Color in spirits, uniform deep brownish black. 



Described from the type Cat. No. 68233, U.S.N.M., a specimen 165 

 mm. long, from Naha, Okinawa. Another example, cotype No. 

 21422, Stanford University collection, is of equal size and does not 

 appear to differ from the type except that there are 13 spines and 16 

 rays in the dorsal fin. 



ABUDEFDUF CLARKI, new species. 



Head 3.3 in length to base of caudal; depth 1.7; depth caudal 

 peduncle 5.5; eye 2.5 in head; interorbital width 2.5; snout 3; D. XIII; 

 A. II, 13; scales in lateral series 26; between lateral line and origin of 

 spinous dorsal 4; between lateral line and origin of anal 9. 



