66 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 3 



postorbital part of head (hind margin of lower eye to posterior edge of 

 opercular membrane) 2.08; length of upper jaw 2.34; least depth of 

 caudal peduncle 2.5; length of first dorsal ray 1.03; length of caudal 

 (approximate, broken) 1.5; length of pectoral fin 1.66; all in length of 

 head. Angle of upper profile with lengthwise axis of body about 42 

 degrees. 



Teeth developed in both jaws, fine, slightly curved; vomer (?) with 

 its head elongated, extending down into mouth, its tip rounded and 

 slightly compressed; premaxiUary somewhat protractile; a small knob 

 on tip of snout, a depression between eyes and this knob; eyes close 

 together, separated only by a very narrow raised bony ridge, the 

 anterior half with a shallow median groove ; first dorsal ray elongated 

 nearly as long as head, its distal fifth expanded, next few dorsal rays 

 free for almost their entire length but not elongated; lateral line 

 straight, with only slight curve above pectoral, not arched ; gill rakers 

 short, somewhat expanded, their edges serrate; upper (left) pelvic 

 fin base longer than right, latter with its first ray inserted at a point 

 even with fourth ray of former ; scales on head and body not evident, 

 apparently not yet developed. 



Color in alcohol. — Pale yellowish head and body, minute dusky 

 pigment flecks scattered around pectoral base and similar spots con- 

 centrated into faint irregular round spots along dorsal and ventral 

 edges of body; distal tip of elongated dorsal first ray dusky, rest of 

 dorsal fin colorless except for a dusky ray every 8 or 10 rays; caudal 

 mostly colorless, with scattered pigment areas not forming a definite 

 pattern; anal colorless, with a single dusky ray every few rays. 



Remarks. — Although this species is represented in the "Crossroads" 

 collection by only a single postlarval specimen on which the scales have 

 not yet formed, we feel reasonably certain that we have made a 

 correct identification since it has the elongate first dorsal ray with its 

 tip expanded, and possesses the short palmate gill rakers that are 

 broad and with their margins spinulate as described by Norman 

 (Flatfishes, p. 198, 1934). 



Family PLEURONECTIDAE 



By Loren p. Woods 



Genus SAMARISCUS Gilbert 



Samariscus Gilbert, Bull. U.S. Fish. Comm., vol. 23, pt. 2, p. 682, 1905 (type 

 species, Samariscus corallinus Gilbert, holotype USNM 51596). 



SAMARISCUS TRIOCELLATUS, new species 



Figure 149 



Holotype. — USNM 141767, Bikini Atoll, lagoon, eastern end, 

 coral heads at depths of 20 to 25 feet, diving, spearing, March 26, 

 S-46-42, Brock and Schultz, 1 specimen, 52.7 mm. in standard length. 



