FISHES FEOM NORTHEASTERN PACIFIC — CHAPMAN 523 



upper jaw 8.1 (7.1 to 7.2); interorbital space 16.3 (15.4 to 16.7); depth 

 of caudal peduncle 16.3 (15.4 to 16.7); length of caudal peduncle 8.1 

 (8.3 to 9.0); length of pectorals 8.1 (8.3 to 9.0); length of pelvics 8.1 

 (8.3 to 9.0); length of dorsal base 9.5 (9.0 to 9.1); length of anal base 

 5.7 (5.4 to 5.6). 



The body and head are moderately compressed, the latter deeper 

 than wide. There are no scales on the bodies of any of the specimens. 

 All the fish, however, are obviously juveniles and the scales have 

 perhaps not yet developed. There is a lateral line present. The 

 length of the snout is the same or only slightly greater than the diam- 

 eter of the eye. The eyes are moderately large and are placed later- 

 ally. The interorbital space is broad and is only slightly convex. 

 The nostrils lie midway between the tip of the snout and the eyes. 

 The premaxiUary extends to or beyond a vertical from the posterior 

 margin of the eye. 



The lower jaw projects, the symphyseal knob is sUghtly elevated, 

 toothed, and fits into a toothless concavity at the junction of the pre- 

 maxiUaries. There is a single row of relatively large, recurved teeth 

 on the premaxillaries that becomes smaller posteriorly. The teeth 

 hook over the outside of the dentaries when the mouth is closed. 

 The teeth on the dentaries form an irregular single series, some of the 

 anterior of which project out slightly to meet those of the premaxil- 

 laries. The vomer bears a line of 4 or 5 large teeth on the head and 

 one on the shank. The palatines have an irregular series of teeth 

 nmning nearly the length of the bone ; some of these are considerably 

 larger than the others. The tongue is free anteriorly and bears 5 or 6 

 large canine teeth upon its dorsal surface. The largest of these is 

 in a median position anteriorly. Behind it there is a row of either 

 2 or 3 similar teeth on each side that are spaced rather widely. Ex- 

 tending posteriorly along the basihyals and basibranchials is a double 

 row in which the teeth are smaller and more closely set than those on 

 the tongue. The maxillaries are large and long, extending along 

 three-quarters or more of the length of the premaxillaries. The gill 

 rakers are long and slender. The pseudobranchiae are well developed. 



The dorsal fin is high and short. The adipose is inserted above 

 the posterior third of the anal. It is moderately high and has a 

 distinct lobe projecting freely behind. The pectoral fins are small 

 and have weak rays. They are placed very low on the body, nearly 

 in the ventral outline. The pelvics are likewise placed low, a little 

 behind the middle of the body, yet in front of the origin of the dorsal. 

 Their rays are stouter than those of the pectorals. The anal origi- 

 nates well behind the dorsal and contams nearly twice as many rays 

 as the latter. The tail, measured from the origm of the anal to the 

 base of the middle rays of the caudal, is less than one-third the length 

 of the body. 



