FISHES FROM BERING SEA AND KAMCHATKA. 



93 



Measurements in hundredths of body length, from tip of snout to anus; Length of body anterior to 

 anus 115 mm.; length of head 70 hundredths; length of snout 18; length of maxillary 27; diameter of 

 orbit 21; interorbital width 15; distance from orbit to angle of interior preopercular crest 22.5; depth 

 at front of dorsal 56; length of barbel 12; distance from tip of snout to front of dorsal 78; length of base 

 of first dorsal 17.5; length of interval between dorsals 9; distance from tip of snout to base of ventrals 

 75; length of second dorsal spine 56; longest pectoral ray 37; length of filamentous ventral ray 35. 



First dorsal 11, g; pectoral ig; ventral 8; branchiostegals 6. 



Head high, compressed, with vertical cheeks which bear no keels or ridges; snout short and high, 

 nearly truncate, protruding but little beyond mouth; no ridge on preorbital. no projecting angles bearing 

 rosettes of spines; mouth large, with lateral cleft, the maxillary extending slightly beyond vertical from 

 posterior edge of pupil; teeth in premaxillaries in a moderate cardiform band, widest at symphysis, the 

 outer series anteriorly of enlarged canines, these decreasing in size laterally and disappearing at middle 

 of length of mouth; mandibular teeth cardiform, anteriorly in a narrow band with the inner series a 

 little enlarged, laterally narrowing to a single irregular series. Gill rakers represented by 6 blunt tuber- 

 cles on anterior arch. Preopercular margin nearly vertical, the angle only very slightly produced. 

 Branchiostegals strong, 6 in number. 



First dorsal inserted above base of pectoral; interval between dorsals very short, a trifle more than 

 half length of base of first dorsal; second dorsal spine with a short filamentous tip, its anterior margin 

 with rather coarse appressed spinclets, except a short distance at base and the filamentous tip; pectoral 

 short, reaching slightly beyond front of anal fin; outer 

 filamentous ventral ray reaching base of third or fourth 

 anal ray; vent immediately in front of first anal ray. 



Scales firm, adherent, those on middle of trunk with 

 5 strong diverging ridges bearing recumbent spines. About 

 8 scales in an oblique series between lateral line and base 

 of first dorsal fin; lateral line forming a strong arch an- 

 teriorly. 



Color dark brown, darker below; gill membranes, gil' 

 cavity, and mouth black. 



Only the type taken. 



The species is closely related to C. allipinnis Gun- 

 ther, taken by the Challenger at great depths off the 

 coast of Japan. Giinther assigns allipinnis to the genus 

 Coryphcenoides, despite the outer series of stronger teeth in the premaxillaries, and the fact that the 

 heterodont dentition of Chalinura forms the only distinguishing characteristic of the genus. 



Fig. 36a. — Chalinura spinulosa. scale from above 

 lateral line. 



Nematonurus clarki Jordan & Gilbert. 



List of Stations. 



Numerous specimens taken as above on Bowers Bank in Bering Sea. 



The length of the interval between the dorsal fins is less in Bogoslovius {clarki) than in the type of 

 Nematonurus; but this is a most variable character among closely related species throughout this group 

 and can not be accorded generic value. In no other respect does Bogoslovius differ from Nematonurus. 

 85079°— Bull. 30-12 7 



