2376 Bulletin 4.7, United States National Museum . 



as the sac-like fold of skin is prominent. Lateral line simple, straight, 

 running from upper edge of gill opening to last ray of dorsal when it is 

 lost, not reaching the caudal; it is placed very high, and giadually 

 approaches the dorsal fin, from which it is separated only by a very small 

 distance. Dorsal extending from a point a short distance behind occiput 

 nearly to base of caudal, einarginate; last spine shortest, about 2 in first 

 soft ray, which is 2\ in head; the longest spines about 3 in head, all the 

 spines slender and flexible. Anal extending from behind vent nearly to 

 base of caudal; similar to soft dorsal, its rays lower. Ventrals well 

 developed with broad base, the rays thickish, inserted very slightly in 

 front of base of pectorals, 1^ in head, reaching f the distance to vent. 

 Caudal subtruncate. Pectorals reaching past vent, about as long as head. 

 Dorsal and anal free from caudal. Color in spirits, dark dull reddish- 

 brown, lighter below; head very dark; dorsals, pectorals, and caudal 

 blackish, pectorals and caudal with lighter blotches; anal and ventrals 

 dusky, anal margined with darker. Length about 3 inches. Galapagos 

 Islands; one specimen known, evidently a rock-pool species. (Named for 

 Miss Susan Brown Bristol, of the department of zoology in Lelaiid Stan- 

 ford Junior University.) 



Emmnion bristolce, JORDAN, in GILBERT, Proc. TJ. S. Nat. Mus. 1896, 454, pi. 55, fig. 1, Gala- 

 pagos Islands. (Coll. Albatross.) 



882. ATOPOCLINUS, Vaillant. 



AtopocKnus, VAILLANT, Bull. Sci. Philom. Paris, aerie 8, tome vi, 1894, 73 (ringens). 



Body elongate, subcylindrical, without visible scales. Head obtuse, the 

 snout short, rounded ; mouth inferior, transverse, with compressed trenchant 

 teeth in each jaw, those above at least in a single row, solidly fastened to 

 the skeleton ; teeth on vomer and palatines uncertain. Dorsal continuous, 

 extending the whole length of the back, from the nape to the caudal pedun- 

 cle, its rays mostly simple, only the posterior articulate ; anal occupying 

 nearly the length, touching the caudal, which is, nevertheless, distinct; 

 caudal deeply forked; ventrals distinctly jugular, very long, of a spine and 

 a ray; no tentacles; gill membranes apparently rounded at the isthmus. 

 Gulf of California; a singular genus evidently closely allied to Bunula. 

 (a Toxog, strange; Clinus.) 



2722. ATOPOCLINUS RDTGENS, Vaillant. 



Head 5; depth 7. D. 24; A. 18; P. 15; V.I, 1. Eye large, 7 in head; 

 interorbital space broad, 3 in head. Caudal a little longer than head. 

 Color clear chamois brown, the belly pale ; a brown band before the snout, 

 across the eye to the caudal, on which it extends ; a silvery stripe border- 

 ing this band above, and below for part of its length. Gulf of California. 

 (Vaillant) ; known from 1 specimen badly shriveled, 39 mm. in length. 

 (ringens, gaping.) 



Atopoclinui ringens, VAILLANT, Bull. Sci. Philom. Paris, serie 8, tome vi, No. 2, February 25, 

 1894, 74, Gulf of California. (Coll. Leon Diguet.) 



