'''i89o'."] PROCEEDINGS OF THE NATIONAL MUSEUM. 453 



First anal raj short and spinous, the succeeding rays articulated, 

 but not branched (like those of dorsal). Interradial membranes of anal 

 fin very deeplj' incised. 



Caudal fin wholly free, rounded, its length nearly equaling that of 

 head. 



Pectorals slightly shorter than head, posteriorly pointed, the longest 

 rays below the middle of the fin. 



Ventrals comparatively broad, inserted but little in front of pec- 

 torals, their basss separated by a space equal to one-third diameter of 

 orbit. 



Color in spirits : Brownish above and on sides, becoming blackish on 

 head; under side of head, belly, and a line along each side of anal fin 

 light. Back witli traces of about ten black cross-bars, which invade 

 base of dorsal fin and extend onto middle of sides. In one specimen 

 the scales of the interspaces are marked each with a light spot (prob- 

 ably blue in life). Fins all dusky, the caudal variegated with lighter 

 in fiue pattern. Ventrals light at base. 



Two specimens from the Galapagos Islands, one from Duncan Island, 

 72 millimeters long, the other from Albemarle Island, 75 millimeters 

 long. 



27. Runula azalea Jordan aud BoUmau. 



Three specimens from Indefatigable Island. 



Teeth fixed, not bristle like, those in upper jaw slightly compressed, 

 much larger than those in lower, which are close-set and form an almost 

 uniform cutting edge. 



D. 40 or 41. A. 25 or 26. 



Sides with a median dusky streak becoming most conspicuous poste- 

 riorly, terminating in an elongate blackish blotch on tail. Traces can 

 usually be seen of six faint dusky cross-bars, which are continued as 

 black blotches on dorsal and anal, six on the former aud four on the 

 latter. On the dorsal fin a smaller intermediate blotch serves to con- 

 nect each two larger ones, and the fin has in addition a narrow light 

 margin. 



Eye, in specimens 1^ inches long, equals interorbital width, is longer 

 than snout, and is contained 3 to 3^ times in head. 



28. Otophidium indefatigabile Jordan and Bollinan. 



Four specimens from Station 2797, from 3 to 4 inches long. These 

 differ slightly from the original description. 



Head 3| to 4 in length ; depth 5^ to 5 J. Maxillary 2^ in head ; snout 

 4i ; interorbital width 4g. 



Ethmoidal ridge terminating anteriorly in a sharp compressed spine, 

 posteriorly in a much lower point, both being concealed under the 

 skin. Four short gill-rakers on horizontal limb of outer gill-arch. The 

 black blotches on marginal part of dorsal fin correspond in position 

 with the broader cross bars on back. 



