^"'usgu!"] PROCEEDINGS OF THE NATIONAL MUSEUM. 99 



middle of sides posteriorly; the median portion of its length shorter 

 than the dorsal portion. 



Color: Light olivaceous, the back with six broad cross-bars of pink, 

 narrowly margined behind and in front with blackish, teroiiuating 

 below on middle of sides. The lovrer of these bars is frequently black. 

 A black bar across caudal peduncle, and sometimes a black line at 

 base of caudal. Along median line of sides frequently a series of small 

 black spots alternating with the cross-bars. A similar series along 

 median dorsal line. A large pink blotch covering occiput. A dusky 

 bar across interorbital space, running downwards and backwards across 

 cheeks. Silvery spots and blotches on cheeks and anterior portions of 

 opercles. Fins unmarked. 



Specimens have been obtained in the Pacific by the Albatross, at 

 Stations 2827 and 2829, and by the Grampus in the Atlantic, at Sta- 

 tions 5108 and 5112. I am unable to detect any specific difl'erence 

 between the two. 



61. Gillellus arenicola sp. nov. 



Bod3' very slender and elongate, much as in Myxodagnus, the snout 

 sharp, the mandible produced at symphysis and conspicuously project- 

 ing. 



Labial fringes apparently obsolete. Maxillary reaching vertical from 

 middle of orbit. Eye small, about equaling length of snout, G in head. 

 Opercular fringes nearly obsolete, three or four small ones at upper 

 edge of opercle. 



Anterior dorsal inserted close behind occiput, composed of three rays, 

 and separated by a f-hort interspace from rest of fin. Pectorals longer 

 than head. 



Head 4f in length ; depth Sf. D. 3-10; A. II, 35, Lat. 1. 18-3-27. 



The lateral line anteriorly runs along base of dorsal, from which it is 

 not separated by intervening scales. The anterior portion is contained 

 .2^ times in the posterior median portion. 



Color : Light olivaceous, the head with grayish blotches and small 

 pearly spots. Eleven dark bars downwards from back, tbe alternate 

 ones narrower and fainter and not extending to middle of sides, as do 

 the others. The margins of the larger bars are darker than the median 

 portion. The bars are not continued onto dorsal fiii ; all the fins trans- 

 lucent. 



A single specimen, Ih inches long, from Cape San Lucas. 



62. Dactyloscopus hinaticus sp. nov. 



Depth greater than in related species, 5^ in length ; head (to end of 

 opercular fringes) 3| ; from tip of lower jaw to base of fringes 4. Head 

 cub )id, narrowed forwards, the vertex gently convex ; width at occiput 

 half length of head (to base of fringes on opercle). Mouth nearly ver- 

 tical, maxillary 2| in head. Labial fringes short but evident. A short 

 nasal filament. 



