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



SPECIMEN STUDIED 



Bikini Atoll: 9 stations, 49 specimens, 19 to 99 mm. in standard length. 



Rongerik Atoll: 1 station, 12 specimens, 21 to 81 mm. 



Eniwetok Atoll: 2 stations, 3G specimens, 22 to 100 mm. 



Kwajalein Atoll: 1 station, 1 specimen, 72 mm. 



The above specimens represent the holotype and paratypes. 



Description. — Dorsal rays XII,14; anal 11,15 (first anal spine 

 embedded in females); pectoral 15 (with lower 5 or 6 thickened); 

 pelvics 1,4; branched caudal 5+4; fringe of cu-ri on nape 47 to 62; 

 nasal cirri 4 to 12 and orbital cirri 8 to 18 (more cirri on large adults). 



Head 3.0 to 3.2; greatest depth 3.2 to 3.5; longest dorsal spine 4.8 

 to 5.7; longest thickened pectoral ray 3.7 to 4.0; all in standard 

 length. Eye 3.0 to 5.0; snout 2.3 to 2.8; interorbital space 7.0 to 9.0; 

 postorbital length of head 1.6 to 1.7; least depth of body 2.6 to 3.0; 

 greatest depth of body 1.0 to 1.2; preorbital width 4.5 to 6.0; all in 

 length of head. 



Orbital tentacle with a broad flattish base, its distal edge somewhat 

 folded, with numerous long cu-ri, more in adults; nuchal band of 

 simple cirri, those at middorsal line about same length as those 

 laterally, band curving posteroventrally so that distance between 

 vertical hues through ventrolateral basal tip and anterodorsal edge is 

 contained 4.6 to 5.6 tunes in postorbital length of head; ventral basal 

 end of nuchal band of cirri blackish, notably swollen even in young and 

 extending ventrally to opposite pupil; snout profile nearly vertical; 

 edge of upper lip with numerous very short papillae (or crenulate in 

 young) ; lower lip shallowly plicate; no cirri on chin; lateral line arched 

 over pectoral fin then curving to midlengthwise axis of body, ending 

 at caudal fin base; a vertical Ime through dorsal origin passes just 

 behind lower tip of base of nuchal frmge and just behind pelvic bases; 

 pectoral fin reaches a little past anal origin; anal spines 2, in females, 

 except juveniles, first embedded, in adult males, both are grayish, 

 crenulate and convoluted, swollen dermal pads; a canine tooth present 

 on each side of lower i&w; teeth in both jaws very numerous, of equal 

 size, and movable; sixth pectoral ray from lowermost edge of fin 

 longest; distal edge of caudal fin a Uttle rounded. 



Color in alcohol. — Background color brown to light brown ; body and 

 head profusely covered with roundish black spots, usually absent 

 from all fins except basally on pectorals; all fins very dark brown or 

 blackish. The color pattern changes with size as follows: From 19 

 to 30 mm. in standard length the black spots are barely discernible 

 and few in number, the background color is chiefly plain brownish, 

 and dark and light bands on the head are becoming developed. In 

 those 30 to 40 mm. there is on front of snout a prominent V -shape 

 brown mark which is separated by a narrow white band from next 



