416 "Cr.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



tip to soft dorsal origin 1.7; all in length from tip of snout to fork 

 of caudal fin or "crutch." Eye 6.0 to 8.0; snout 3.3 to 3.4; tip of 

 snout to rear of maxillary 2.5 to 2.7; intcrorbital space 3.3 to 3.4; 

 length of pectoral fm 1.7 to 1.8; longest (first) dorsal spine 2.0; longest 

 soft dorsal ray 3.5 to 4.9, soft anal ray 3.7 to 4.9; longest pelvic ray 

 2.6 to 2.8, all in length of head to rear edge of fleshy operculum. 



Body fusiform, skin smooth except for corselet, which occurs from 

 breast around pectoral fin base and groove for pectoral fin to spiny 

 dorsal, thence along middle of back to soft dorsal; lower jaw with 

 small conical, somewhat hooked teeth; vomer and palatines with a 

 few villiform teeth in a single or narrow row; tongue toothless but 

 with a cutaneous fold on each side, concave between; lateral line a 

 little arched over pectoral, then running a slanting course to caudal 

 peduncle, with a few scales above and below; first spine of dorsal 

 longest; preopercular margin evenly roinided posteriorly; maxillary 

 reaches to opposite front of pupil; intcrorbital space strongly convex; 

 diameter of eye (along lengthwise axis of body) 3.4 to 4.6 in length 

 of pectoral and 2.3 to 3.0 in length of maxillaries. 



Color in alcohol. — Back dark blue to blackish dorsally with black 

 oblique bands, mostly above lateral line; lower sides silvery to whitish; 

 area between pectoral and pelvic fins with 1 to 5 black spots; pectoral 

 fin black; pelvics black, their posterior margins and tips white; just 

 below eye a blackish area; rear edge of maxillary groove black. 



Remarks. — Fraser-Brunner (Ann. Mag. Nat. Hist., ser. 12, vol. 2, 

 pp. 622-627, 1949) recognizes two separate species for the genus 

 Enthynnus, one, affinis, in the Indo-Pacific, of which there are tlu'ee 

 subspecies : E. affinis affinis (Cantor) from the Red Sea and the Indian 

 Ocean to the East Indies and Australia; E. affinis yaito Kishinouye, 

 from Japan, Hawaii and the Pacific Islands; and E. affinis lineatus 

 Kishinouye, from the Pacific ocean of Central America. In the At- 

 lantic he recognizes E. alletteratus alletteratus Rafinesque from the 

 North Atlantic and E. alletteratus aurolitoralis Fraser-Brunner from 



the Gold Coast. 



Genus GYMNOSARDA Gill 



Gymnosarda Gill, Proc. Acad. Nat. Sci. Philadelphia, p. 125, 1862 (type species, 

 Thynnus unicolor Riippell). 



GYMNOSARDA NUDA Giinther 



Plate 123,B 



Pelamys nuda Gunther, Catalogue of the fishes in the British Museum, vol. 2, 

 p. 368, 1860 (type locality, Red Sea). 



SPECIMENS STUDIED 



Bikini Atoll: Eastern end of lagoon and in Enyu Channel, March 11-31, S- 

 46-2, Brock, Marr, and Schultz, 6 specimens USNM 140980, 410 to 790 mm. in 

 length to fork of caudal fin or "crutch." 



