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



branched caudal 5+4 in adults but unbranched in young, branchini; 

 beginning at about 27 mm. in standard length; pelvics 1,3; orbital 

 cirrus single, sometimes adults will have 1 or 2 cirri arising from sides 

 at tip; nuchal cirrus single on each side rarely bifid; nasal cirri from 1 

 to 10, increasing in number with increase in size. 



Head 3.7 to 4.4; greatest depth 4.7 to 4.8; longest pectoral ray 4.2 

 to 4.9; snout tip to anus 2.0 to 2.2; anal fin base 2.1 to 2.2; all in 

 standard length. Eye 3.0 to 5.0; snout 2.5 to 2.8; postorbital length 

 of head 1.6 to 1.7; greatest depth of body 1.2 to 1.3; least depth 2.6 to 

 2.7; longest pectoral ray 1.1 to 1.2; longest dorsal spine 1.6 to 1.7; all 

 in length of head. Fleshy interorbital space 2.8 to 3.0 in eye. 



Orbital tentacle single, thin, much broader than thick, and wide 

 basally, tapering to a point distally, its length about % to % eye di- 

 ameter; occasionally 1 or 2 cirri branch off the edge of the orbital 

 tentacle near its tip; nuchal cirrus on each side of nape single, thin, 

 much broader than thick basally, tapering to a point; snout profile 

 with a backward slant of about 10 to 15 degrees from the vertical; 

 both lips smooth edged; lateral line arched over pectoral fin, then 

 continuing on midlengthwise axis of body as several isolated pores 

 ending at about over middle of anal fin base; vertical line through 

 dorsal origin passes through bases of pelvic fins; dorsal fin with a 

 moderately deep notch between spiny and soft portions; dorsal fin 

 with membrane attaching last ray to basal part of dorsal edge of 

 caudal fin; anal origin under base of next to last dorsal spine, last 

 anal ray without membrane attaching it to caudal peduncle; pectoral 

 fins not quite reaching to opposite anus; anal spines small, embedded, 

 without swollen fleshy tips, except in adult males (the first six 

 soft anal rays on mature males greatly swollen and convoluted, the 

 next 3 or 4 slightly so); no posterior canines; teeth fine, numerous, 

 movable, of equal size in both jaws; distal margin of caudal fin 

 rounded; cephalic crest well developed in males, absent in females. 



Color in alcohol. — Half grown, up to about 55 mm., are plain brown 

 or blackish with traces of dark brown specks posteriorly on body of 

 females and sometimes on dorsal fin; dorsal and anal fins dusky; 

 cephalic crest blackish; vertical bars present or obsolete. Back- 

 ground coloration of adult females brown to pale tan or whitish 

 usually with or without 6 or 7 more or less double dark bars on sides, 

 posterior part of body and dorsal fin finely speckled with dark brown 

 specks or dots; caudal, pectoral and pelvic fins plain pale to light 

 gray; anal fin light gray or dusky with tips of rays paler. Background 

 coloration of adult males brownish or light brownish with or without 

 6 or 7 darker double vertical bars usually evident; dorsal fin dusky 

 distally with lengthwise narrow pale or whitish streaks or light 

 punctulations distally, dorsal fin lighter basally; cephalic crest 



