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



head. Least width of bony interorbital 1.3 in eye; least depth of 

 caudal peduncle 1.7 in its length; next to last dorsal spine 1.8 in 

 last dorsal spine and 5.4 in longest dorsal spine; length of first anal 

 spine in second 2.0, third anal spine longer than second; pel vies long, 

 reaching nearly to rear of base of anal fin; head about 3 in longest 

 pectoral fin rays. 



Color in alcohol. — General ground color pale with 31 vertical 

 narrow dark bars, 11 of these wider and blacker than the others; soft 

 dorsal, anal, and caudal fins barred ; pectoral and pelvics plain blackish, 

 latter may have white spots; dorsal spines blackish with tips white; 

 under side of head with narrow black streaks or lines; supraorbital 

 tentacle long, barred with blackish, but the paler interspaces dusky, 

 blackish in the 86 mm. specimen. 



Genus BRACHIRUS Swainson 



Brachirus Swainson, Natural history and classification of fishes . . . , vol. 2, 



p. 71 (not p. 180 and 303, replaced by Synaptura Cantor) 1839 (type species, 



Pterois zebra Cuvier and Valenciennes). 

 Brachyurus Swainson (emended spelling), Natural history and classification of 



fishes . . . , vol. 2, p. 264, 1839 (types species, "Zebra Cuvier iv, p. 367"; 



preoccupied in mammals). 

 Dendrochirus Swainson, Natural history and classification of fishes . . . , vol. 2, 



p. 180, 1839 (type species, Pterois zebra Cuvier and Valenciennes). 

 Nemapterois Fowler, Proc. U.S. Nat. Mus., vol. 85, p. 81, fig. 36, 1938 (type 



species, Nemapterois biocellatus Fowler). 



BRACHIRUS BIOCELLATUS (Fowler) 



Figures 138,1; 139 



Nemapterois biocellatus Fowler, Proc. U.S. Nat. Mus., vol. 85, p. 81, fig. 36, 1938 

 (type locahty, Philippine Islands; holotype USNM 98890. 



SPECIMENS STUDIED 



Eniwetok Atoll: 1 station, 1 specimen, 60 mm. in standard length. 

 Bikini Atoll: 1 lot, Univ. Washington, 1 specimen, 72 mm. 



Description.- — ^Dorsal rays XIII, 9 or 10; anal 111,5; pectoral i to 

 iii,7 to 9,viii to xii; pelvic^ 1,5; branched caudal 5 + 5 and 6 + 5; 

 vertical scale rows above lateral line 46, 49, and 50 in the type; pores in 

 lateral line 24 in 3 specimens; gill rakers 6 + 1 + 10 and 6 + 1 + 11. 



Depth 2.5 to 2.6; head 2.5 to 2.6; length of preorbital barbel 3.4; all 

 in standard length. Snout 3.2 to 3.5; eye 3.2 to 3.5; postorbital part of 

 head 2.3 to 2.4; least depth of caudal peduncle 3.0 to 3.1; longest ray 

 of pectoral fin 0.7 to 0.8; longest dorsal spine 1.6 to 1.7; all in length of 

 head. Least width of bony interorbital 2.1 to 2.2 in eye; least depth of 

 caudal peduncle in its length 1.4 to 1.5; next to last dorsal spine in 



