, 
412 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Gill-rakers similar on all the arches, short, immovable, much broader 
than long, each provided with 4 or 5 short needle-like spines. <A slit 
behind fourth gill. Pseudobranchize developed, partly hidden by a fold 
of the membrane. Branchiostegals 7, the membranes overlapping ante- 
riorly, as in the Salmonide. 
Seales small, deciduous; those of the lateral line large, non-imbricate, 
plate-like, becoming smaller posteriorly, the series terminating abrubtly 
opposite middle of the base of the anal. 
Fins all very small. Pectorals placed low, their length two-fifths that 
of the snout. Ventrals far back, entirely behind the dorsal, their dis- 
tance from base of caudal half that from front of orbit. Distance from 
middle of dorsal basis to base of caudal half its distance from the tip 
of the snout. 
Anal-elongate, high anteriorly, its base terminating at a point distant 
one-half diameter of orbit from base of caudal. Adipose dorsal high and 
narrow, directly over the end of the anal. 
Caudal small, widely forked, the middle rays two-fifths the length 
of longest. End of caudal peduncle emarginate, the caudal rays radi- 
ating from the upper and lower angles. (In the type specimen the two 
lobes of caudal are entirely separate, without trace of connecting mem- 
brane.) Rudimentary rays long, extending along upper and lower sides 
of caudal peduncle for a distance greater than diameter of orbit. Tips 
of adipose dorsal and posterior anal rays reach rudimentary caudal rays. 
Dorsal rays 8; anal rays 31; pectoral rays 11; ventral rays 9; lateral 
plates 60. Vent slightly behind base of ventral fins. 
Color, in spirits, light olive-brown, becoming darker on the back, belly, 
and towards the tail. Above with a few small, distinct, black dots. 
Sides with some light brownish-yellow shading, a very narrow, length- 
wise, silvery streak along the middle of the abdomen. Base of pectoral 
silvery, with a dark spot above. Bases of other fins jet-black, the color 
usually extending on the bases of the rays. 
Sides of head silvery; opercles, top of head, and tip of snout dark; 
mandibular rami bright silvery, and provided: ae with a double series of 
minute ‘“ phosphorescent” site 
This species is known to us from a single specimen obtamed in the 
harbor of Port Lownsend, Wash., by Mr. Brown, assistant in the custom- 
office at Port Townsend, and by him presented to the United States 
National Museum. The type is 94 inches in length, and is in good con- 
dition. 
