616 PROCEEDINGS OF THE NATIONAL MUSEUM. voi,. xxv. 



cutting edge; no teeth on vomer or palatines. Gill-membranes form- 

 ing a broad, somewhat V-shaped fold across the isthmus. Pseudo- 

 branchiie large; gillrakers small, slender, about 15 on the first arch. 



Body covered Avith minute, cycloid scales; membranes of fins without 

 scales; head naked. Lateral line represented bj^a short row of 9 or 10 

 pores, extending backward from above gill opening, each pore below a 

 minute villus. Nostrils with slender pointed tubes. Head and nape 

 with many tentacles; a large pair on anterioi- part of interorbital space, 

 joined at their bases, fringed at tip and along the sides, their height 

 about two times the diameter of eye; posterior border of interorbital 

 space with three short tentacles, the outer one rather broad and 

 branched, the inner one slender and pointed; occiput and nape as far 

 back as base of third dorsal spine with many pointed tentacles, none 

 of which is branched; symphysis of lower jaw with a pair of min- 

 ute villi; none along sides of jaws; a few small villi along edges of 

 opercle and preopercle. 





m^^-rm:-- 



FlG. 2.— BRYUSTEMMA UliCUKATl.M. 



Dorsal fin inserted immediately above upper edge of gill-opening, 

 the membrane l)roadly scalloped between the first five spines, not 

 incised betw^een the other spines, joined to base of caudal rays; first 

 spine with small villi on its anterior edge; first eight or nine spines 

 with branched tentacles extending upward from their tips, the anterior 

 tentacle highest, the others growing gradually shorter to the last, 

 which scarcely projects above the fin; spines near middle of fin con- 

 tained about two and one-third times in the head. Anal inserted below 

 base of seventeenth dorsal spine, the spine weak and small, the mem- 

 brane deeply incised between the rays, not joined to caudal; length of 

 rays near middle of fin 3 in head. Caudal rounded, the rays below 

 middle of fin slightly longer than those above, the longest contained 

 one and three-fifths times in the head. Pectoral rounded, its length 

 about equal to that of the head. V'entrals narrow, the length con- 

 tained about two and three-fifths times in the head. 



Color plain; about twelve very indistinct small brownish spots on 

 the dorsal; the anterior is the most prominent; six or seven faint dark 

 spots on posterior half of anal; cirri on upper part of head faintly 

 marked with brown. 



