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



SPECIMENS STUDIED 



Northern Marshall Islands, 1946, commercial fishermen, 4 specimens, USNM 

 140986, 490 to 590 mm. to fork of caudal fin, saved from the ship wrecked in 

 Half moon Bay, Calif, (see vol. 1, p. xxi), now in a very poor state of preservation. 



Bikini Atoll, Lagoon off Bikini Island to entrance at Enyu Island, hook and 

 line, March 11 to 31, S-46-2, Brock, Marr, Schultz, and crew of U. S. S. Bowditch, 

 2 specimens, 485 and 525 mm.; Bikini lagoon, general region of channels to lee- 

 ward, trolling, hook and line, and spearing, April 1 to May 7, S-46-72, crew, 

 officers, scientists on U. S. S. Bowditch, 5 specimens, USNM and CNHM, 403 

 to 477 mm.; Ruji Channel, surface troUing, April 6, S-46-90, Brock, 1 specimen, 

 400 mm. 



Description. — Dorsal rays XII, III, 6 to 8-7; anal rays 111,8 or 9-6; 

 pectoral ii,23 or 24; pelvics 1,5; gill rakers 4 + 1 + 15 on first gill arch. 



Greatest depth 4.8 to 5.3 ; length of head 4.5 to 4.8 ; length of pectoral 

 fin 8.2 to 8.8; length of base of first dorsal 3.9 to 4.3; snout tip to soft 

 dorsal origin 1.7 to 1.8; all in length from tip of snout to fork of caudal 

 fin, or "crutch." Eye 4.5 to 4.7; snout 2.6 to 2.7; tip of snout to 

 rear of maxillary 2.1; interorbital space 3.0 to 3.2; length of pectoral 

 fin 1.7 to 1.8; longest (first) dorsal spine 2.5 to 3.0; longest soft dorsal 

 ray 2.6, soft analray 2.5; longest pelvic ray 2.9 to 3.0; all in length 

 of head to rear edge of fleshy operculum. 



Body elongate, fusiform, skin with scales; corselet indistinct; both 

 jaws Vvith strong teeth; a large villiform patch of teeth on vomer and 

 palatines; tongue with a large villiform patcli of teeth; two lateral 

 lines, the dorsal one extending from upper edge of gill opening along 

 contour of back, the ventral one abruptly curving downward under 

 pectoral fin then following the ventral contour of body to base of 

 caudal peduncle; first or second dorsal spine longest; posterior margin 

 of preopercle concave; maxillary reaches to opposite front of pupil; 

 interorbital space first convex, then central part a little concave; 

 diameter of eye along the lengthwise axis of body 2.8 to 3.1 in length 

 of pectoral and 2.0 to 2.2 in length of maxillaries. 



Color in alcohol. — Back blackish to bluish, paler ventrally. 



Genus ACANTHOCYBIUM Gill 



Acanthocybium Gill, Proc. Acad. Nat. Sci. Philadelphia, vol. 14, p. 125, 1862 

 (type species, Cyhium sara Bennett) . 



ACANTHOCYBIUM SOLANDRI (Cuvier and Valenciennes) 



Plate 121,B 



Cyhium solandri Cuvier and Valenciennes, Histoire naturelle des poissons, vol. 

 8, p. 192, 1831 (type locality, open seas). 



SPECIMENS STUDIED 



Northern Marshall Islands, 1946, commercial fishermen, 8 specimens, USNM 

 140979. Only the 8 heads were saved from the wrecked ship in Halfmoon Bay, 

 Calif, (see vol. 1, p. xxi), and these were in a bad state of preservation; thus, it 



