186 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Relationships. — R. harhulifer is not closely related to any known 

 species. 



Description of type. — Pectoral 20 ; caudal 3 ; pyloric coeca 7. Depth 

 6.6; head 5.3. Eye 3; gill slit 3.6. 



Body slender, becoming very attenuate posteriorly. Head com- 

 paratively heavy; occiput slightly swollen; cheeks vertical; profile 

 rising gradually from the snout. Mouth narrow; the lateral cleft 

 extending to below the middle of the pupil; the maxillary reaching 

 beneath the posterior margin of the eye. Larger teeth more or less 

 strongly trilobed, not close set, in broad bands; the inner teeth 



FiGTTBE 102.- 



-Rhinoliparis barbuluee. Teeth from specimen from Albatross Station 

 5043, OFF Hokkaido, Japan 



larger; nine oblique rows in the half of the lower jaw, distinct; the 

 oblique rows in upper jaw indistinct. Snout low, projecting beyond 

 the upper lip for the diameter of the pupil; two barbels on the tip 

 of the snout, separated by three-fifths the length of the barbels; 

 the length of the barbels about one-half the eye. Nostril tube not 

 projecting above the skin. Eye large, black, far forward, the anterior 

 margin above the tip of the lower jaw; pupil large, round. Gill 

 slit extending down in front of five pectoral rays. Pores not enlarged; 

 one suprabranchial pore present; the upper snout pore above the 

 barbel ; the anterior snout pore low ; below and slightly to one side of 



