574 PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 43. 



Rliinoliparis harhulifer and can readily be distinguished from the latter 

 by the larger number of barbels on the snout and the more highly 

 modified type of dentition. 



Description of type. — Body as in i?. harhulifer, low, extremely at- 

 tenuate. Head, 5.7 in the length of the body without the caudal, 

 depressed; width of head greater than depth of head; profile low, 

 nearly straight from snout to occiput; interorbital flattened. Mouth 

 broad; maxillary reaching vertical from posterior margui of eye. 

 Teeth in narrow bands, elongate, slender, slightly recurved, simple 

 or the lateral lobes faintly indicated on some of the teeth. Snout 

 depressed, broad, projecting as in R. harhulifer, extending beyond 

 the upper lip for three-fourths the diameter of the eye. The snout 

 is somewhat mutilated, but at least three barbels are present on each 

 side; one of these is situated near the tip of the snout and two near 

 the lateral margin of the lower surface. Nostril with a raised rim. 

 Eye large, 4 in the head. Gill-slit apparently above the base of the 

 pectoral fin. Pyloric caeca about 12. 



Caudal fin mutilated but apparently reduced to a single elongate 

 ray, connected for a short distance with the dorsal and anal fins. 

 Pectoral fin with a shallow notch; the middle rays well developed, 

 widely spaced; the lower lobe of 6 elongate mainly free rays. 



The dermis absent, probably dusky or blackish; flesh pinkish; 

 mouth dusky; peritoneum black; stomach pale or slightly dusky. 



