Jordan and Evermann. Fishes of North America. 2505 



naked; bones of the head rather firm, but with the muciferous system 

 well developed, the canals having wide openings along the infraorbital, 

 and on the lower limb of the preoperculnm ; eye rather small ; nostrils far 

 apart, the posterior in front of the eye and the anterior at the extremity 

 of the snout; operculum with a spine behind; no other armature on the 

 head ; snout not swollen, but the upper jaw slightly overlapping the lower ; 

 barbels none; mouth wide; bands of villiform teeth in the jaws, on the 

 voiner, and the palatine bones ; a series of larger teeth along the sides of 

 the lower jaw; tail not much attenuated ; vertical fius confluent; ventrals 

 close together, reduced to a pair of fine, simple filaments, and inserted 

 somewhat behind the isthmus, below the middle of the operculum. Gills 

 4, with short, broad gill rakers and well developed laminae ; pseudobran- 

 chine none; branchiostegals 8; pyloric appendages. Deep seas. Two 

 species known, (xarai, at the bottom; TV&$, Tvyxavw, find.) 



2877. CATJ3TYX RUBBIROSTRIS, Gilbert. 



Depth of body below origin of dorsal equals ^ distance from end of snout 

 to vent, 7 in length ; head 4 ; distance from snout to origin of dorsal 3y ; 

 from snout to vent 2f ; maxillary extending beyond eye, 2f in head ; eye 

 equaling snout, 5^; interorbital width 7; width of snout 3i. Teeth in 

 upper jaw in a narrow band, minute, compressed, narrowly triangular, 

 none of them enlarged; in the lower jaw a still narrower band of similar 

 teeth, the posterior row slightly enlarged and increasing a little in size 

 on sides of jaw, where it is accompanied by a single series only of the 

 smaller teeth ; this lateral series is continued backward far beyond pre- 

 maxillary band ; teeth on vomer and palatines similar to those in sides of 

 lower jaw, the former in a V-shaped patch, the latter in a long and very 

 narrow band. Anterior nostril in a short tube at tip of snout, the pos- 

 terior large, without tube, immediately in front of eye; system of mucous 

 pores well developed but not conspicuous, the pores collapsing on account 

 of the thinness of the skin covering head; large mucous tube below eye, 

 extending around front of snout and opening by slit-like pores along edge 

 of snout and lower margin of infraorbital flap, opening posteriorly by a 

 vertical slit as long as pupil, immediately above end of maxillary; 

 another series of pores along mandible and at edge of expanded limb 

 of preopercle; no other evident pores. Angle of preopercle much ex- 

 panded, its width equaling diameter of pupil; a sharp, strong spine 

 arising from anterior portion of opercle, the structure of the gill flap ap- 

 parently like that of Bassogigas stelliferoides; a short, sharp spine directed 

 backward immediately behind posterior nostril; no other spines on head; 

 gill openings wide, continuing forward to below posterior margin of orbit, 

 the membranes wholly free from the isthmus ; gill rakers short but not 

 very broad, about $ length of pupil, only 2 or 3 developed immediately in 

 front of angle of arch. Dorsal beginning over or slightly behind middle 

 of pectorals, the distance from its origin to occiput equaling or somewhat 

 exceeding distance of latter from tip of snout; dorsal and anal fully 

 united to caudal. The caudal has a base of appreciable width, bearing 

 about 12 close-set rays, which extend much beyond tips of last dorsal and 

 3030 - 80 



