262 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



Genus GYMNOCIRRHITES Smith 



Gymnocirr kites Smith, Ann. Mag. Nat. Hist., ser. 12, vol. 4, p. 638, 1951 (type 

 species, Cirrhitus arcatus Cuvier and Y alcncienues = Cirrhitus amblycephalus 

 Bleaker). 



GYMNOCIRRHITES ARCATUS (Cnvier and Valenciennes) 

 Plate 106,D 



Cirrhitus arcatus Cuvier and Valenciennes, Histoire naturelle des poissons, 

 vol. 3, p. 74, 1829 (type locality, Mauritius; Tahiti). 



SPECIMENS STUDIED 



Bikini Atoll: 12 stations, 72 specimens, 30 to 85 mm. in standard length, 



Eniv/etok Atoll: 1 station, 2 specimens, 45 to 60 m.m. 



Rongelap Atoll: 7 stations, 45 specimens, 25 to 82 mm. 



Kwajalein Atoll: 1 station, 7 specimens, 31 to 63 mm. 



Likiep Atoll: 1 lot, Univ. Washington, 7 specimens, 46 to 65 mm. 



Description. — Dorsal tsljs X,11; anal 111,6; pectoral ii,5,vii; pelvics 

 1,5 ; branched caudal fin rays 7+6 ; vertical scale rows from upper edge 

 of gill opening to base of caudal fin 45 to 47 with 5 or 6 scales from 

 dorsal origin to lateral line and 11 or 12 from anal origin to lateral line; 

 6 rows of scales on cheek; gill rakers 4 or 5 + 1 + 11 or 12. 



Greatest depth 2.5 to 2.6; head 2.6 to 2.8; length of longest branched 

 pectoral ray 4.5 to 5.6; length of longest lower simple pectoral ray 5.0 

 to 5.1; all in standard length. Snout 3.1 to 3.8; eye 3.5 to 5.0; tip of 

 snout to rear of maxillary 2.1 to 2.2; greatest depth 0.8 to 1.0; least 

 depth of caudal peduncle 2.5 to 2.9; postorbital length of head 1 .8; all 

 in length of head. Least depth of caudal peduncle in its length 1.5. 

 Interorbital (bony) space 1.3 to 1.8 in eye. 



Greatest depth at origin of dorsal fin; body compressed; interorbital 

 space concave; gill membranes broadly joined across isthmus, free, 

 naked; maxillary largely exposed, only anteriorly concealed by pre- 

 orbital; lips very broad, moderately thick; jaws about equal; mouth 

 oblique; scales on cheek large, in 6 rows ; nostrils separated by a dermal 

 isthmus, anterior nostril with a tuft of cirri on its posterior margin; 

 posteriorly at tip of each dorsal spine a single dermal cirrus; on largest 

 specimen, first soft dorsal ray is elongated, contained 1,3 in head, 

 otherwise first soft dorsal rays are contained 1.5 to 2.0 in head; no 

 accessory pelvic scale; scales cycloid; vomerine teeth villiform, in a 

 triangular patch; no teeth on palatines; jaws with a villiform band of 

 teeth, outer margins with a row of somewhat enlarged conical teeth 

 and a short canine tooth on each side of symphysis in upper jav/, and 

 about 3 short canine teeth on each side anteriorly on lower jaw; 

 lateral line complete; pelvics inserted about under base of fourth dorsal 

 spine, behind pectoral base; basallj^^ the rays of soft dorsal, anal, caudal, 

 and pectoral fins with scales; usually the third lower simple pectoral 



