FAMILY ALUTERIDAE — WOODS 89 



wavy submarginal lines with interspaces dnsky brown forming a 

 narrow faint submarginal dark band, not as wide as in Pjn. mar- 

 shallensis; basal three-fourths of fin pale (bright yellow in living 

 specimens) ; pectoral fin pale, its base blackish. 



Remarks.- — One example of this subspecies has a slight indication 

 of a dark branchial spot and the dark submarginal caudal band is as 

 narrow as in P.m. melanocephaliis. P.m. johnstonianus diffei-s from 

 the latter subspecies in having a black area around the gill opening. 

 This new subspecies differs from P.m. marshallensis in having a narrow 

 dark submarginal band on caudal fin distally. 



Named johnstonianus after Johnston Island. 



Genus PARAMONACANTHUS Bleeker 



Paramonacanihus Bleeker, Nederl. Tijdschr. Dierk., vol. 3, p. 12, 1866 (type 

 species, Monacanthus curtorhynchus Bleeker (?=M. oblongus Temminck 

 and Schlegel)). 



PARAMONACANTHUS OBLONGUS (Temminck and Schlegel) 



Plate 133, B 



Monacanthus oblongus Temminck and Schlegel, Fauna Japonica, Pisces, p. 291, 

 pi. 130, fig. 2, 1846 (type locality, Nagasaki). 



SPECIMENS STUDIED 



Rongelap Atoll: lagoon two miles west of Bush Island, dredge at depth of 120 

 feet, June 21, S-46-232, Taylor, 2 specimens, 27.5 and 36 mm. in standard length. 



Description. — Dorsal rays 1,27; anal rays 26, pectoral rays 11; 

 branched caudal rays 5 + 5. 



Depth of body 2.1 to 2.5 ; length of head 2.65 to 3.1 ; both in standard 

 length. Snout 1.4 to 1.5; diameter of eye 2.9 to 3.1; least depth of 

 caudal peduncle 2.8 to 3.3; length of pectoral fin 2.9 to 3.1; length of 

 longest dorsal ray 0.8 to 9.5; length of longest anal ray 4.2 to 8.2; 

 length of middle caudal rays 1.0 to 1.2; length of soft dorsal fin base 

 0.9 to 1.2; length of anal base 1.0 to 1.3; length of dorsal spine 1.4 

 to 1.5; interorbital width 3.4 to 3.6; postorbital part of head 5.1 to 

 9.6; length of gUl opening 4.7 to 9.6; all in length of head. Angle of 

 snout profile with lengthwise axis of body 29 degrees, snout profile 

 slightly concave in 27.5 mm. specimen, straight in 36 mm. specimen. 



Interorbital area flat, ridge rising from center of interorbital to 

 base of dorsal spine; eyes placed high; dorsal spine inserted over 

 posterior margin of eye, dorsal spine slender, anterior surface with 

 minute spines, posterolateral spines strong, pointing downward; 

 pelvic spine small, slender, moveable; pelvic flap short, its margin 

 slightly concave; caudal peduncle about as long as deep; each scale of 

 body with 3 or 4 weak slender pointed spines, scale spines on caudal 



748-328—66 7 



