270 U-S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



spots; caudal fiii with brown spots; the most outstanding color mark 

 is an ocellated browTi to blackish spot above operculum near rear of 

 posttemporal fork. 



Ecology. — This species lives in the areas of loose sand, sometimes 

 appearing to come from holes or from under coral slabs. 



PARAPERCIS CEPHALOPUNCTATUS (Seale) 



Plate 112, C-E 



Percis cephalopunctatus Seale, Occ. Pap. Bishop Mus., vol. 1, No. 3, p. 124, 1901 



(type locality, Guam). 

 Parapercis moniillai Martin and Montalban, Philippine Journ. Sci., vol. 56, 



No. 2, p. 224, pi. 3 (2), fig. 2, 1935 (type locahty, Philippines). 

 Parapercis tetracanihus Jordan and Seals, Bull. U. S. Bur. Fish., vol. 25, p. 



414, 1906 (Samoa).— ScHULTz, U. S. Nat. Mus. Bull. 180, p. 269, 1943, 



(Phoenix and Samoan Islands). 



SPECIMENS STUDIED 



Bikini Atoll; 23 stations, 121 specimens, 46 to 124 mm. in standard length. 

 PJniwetok Atoll: 4 stations, 13 specimens, 88 to 116 ram. 

 Rongelap Atoll: 8 stations, 119 specimens, 24 to 125 mm. 

 Rongerik Atoll: 5 stations, 29 specimens, 25 to 117 mm. 

 Kwajalein Atoll: 1 station, 7 specimens, 56 to 103 mm. 



Description. — Dorsal rays IV,21; anal 1,17; pectoral i,16; pelvics 

 1,5; branched caudal fin rays 8 + 7; scale rows from upper edge of gill 

 opening to base of caudal fin 59 or 60; scales in a row from anal origin 

 to dorsal fin base 13 or 14 + 1 +7 ; gill rakers on first arch 4 or 5 + 1 +9. 



Greatest depth 6.4 to 6.7; head length to fleshy tip of operculum 3.2 

 to 3.5; length of base of anal fin 2.5; length of base of dorsal fin 1.8 

 to 1.9; all in standard length. Snout 3.0 to 3.4; eye diameter 4.0 to 

 5.0; fleshy interorbital space 11.5 to 13; tip of snout to rear edge of 

 maxillary 2.6 to 2.8; postoibital length of head 2.0 to 2.1; longest 

 dorsal spine 5.1 to 5.5; longest pectoral ray 1.6 to 1.7; longest pelvic 

 ray 1.3 to 1.5; least depth of caudal peduncle 3.8 to 4.3; all in the 

 length of the head. Least depth of caudal peduncle 1.1 in its length. 

 Interorbital (fleshy) space 2.5 to 3.5 in eye diameter. 



Body elongate; head somew^hat depressed; gill membranes broadly 

 united across isthmus, with a wide free fold; scales ctenoid on body, 

 head naked except for a patch on operculum and several scattered 

 ones on the cheek; breast scaled; caudal fin scaled two-thirds to three- 

 fourths distance to tip of rays; bases of pectoral fin rays vrith scales, 

 other fins naked; gill rakers short, thick; a slit behind fourth gill arch; 

 pseudobranchiae present; vomer with a patch of vilhform teeth; 

 palatines toothless; both jaws v/ith a udde band of villiform teeth 

 anteriorly, bordered on the outside with several conical caninelike 

 teeth, laterally these teeth form a narrovv band, then posteriorly a 

 single row; lower jaw projecting a little in front of tip of snout; part 



