384 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 

 OPHIOBLENNIUS MAZORKAE. new species 



Figure 74 



Head 3.6 to 4.3; depth 4.2 to 4.5; D. XII, 17, occasionally 16; A. II, 

 18 or 19, occasionally 17; P. 14; vertebrae 33 (tlu-ee specimens dis- 

 sected). 



Body compressed, its greatest thickness about two-thirds the depth; 

 head compressed, its dorsal outline convex; caudal peduncle rather 

 long, compressed, 3.0 to 3.6 in head; snout only moderately blunt, 

 4.0 to 5.0; eye rather large, 3.1 to 3.6; interorbital narrow, 8.0 to 11; 

 mouth moderate, nearly horizontal; lower jaw included; maxillary 

 generally reaching to or a little beyond anterior margin of pupU, 2.8 

 to 3.9 in head; teeth in each jaw in an outer series, minute (not visible 

 without magnification), pointed; each jaw anteriorly with 4 hooked 

 canines (shaped much like barbless fish hooks), those of lower jaw all 

 of about equal size, two outer ones in upper jaw of same size as those 

 of lower jaw, the two middle ones smaller; those of upper jaw and 

 the two imier ones of lower jaw bent inward, the two outer ones in 

 lower jaw bent outward and backward; lower jaw laterally usually 

 with two sometimes one or three, small hooked canines; vomer with 

 a bony ridge, but without teeth; upper lip minutely fringed; a short 

 broad tentacle distally slightly fringed, behind anterior nostril; a longer 

 one, about as long as pupil, with fringed edges, on upper margin of 

 eye, slightly posterior to midlength; nape generally at least with two 

 minute tentacles, well removed from midline; gill rakers virtually 

 undeveloped, mere points; lateral line curved, extending only about 

 to vertical from beginning of soft dorsal, the pores somewhat elevated ; 

 dorsal fin beginning a little in advance of margin of opercle, very 

 deeply notched, the two parts almost separate, the spines very 

 slender, flexible, the anterior one generally highest, about 1.5 to 2.0 

 in head, the last spine small, not longer than pupil; soft part of dorsal 

 slightly longer than spinous part, its longest rays of about same 

 length as the longest spines; caudal fin concave, a little shorter than 

 head; anal long, of about same height as soft dorsal, its first spine 

 very small, its base 2.3 to 2.5 in length; ventral with two externally 

 visible filaments (which upon removal of the skin may be separated 

 into a spine and five articulated rays), 1.3 to 1.6 in head; pectoral 

 usually reaching to or a little beyond origin of anal, rounded, the long- 

 est rays below middle of fin, about as long as head, 4.0 to 4.4 in length. 



Color pale yellowish; middle of back with about 9 to 11 more or 

 less quadrate brownish blotches, usually broader than the interspaces, 

 the blotches as seen under magnification being composed largely of 

 more or less disconnected spots, mostly having a black point as a 

 center; upper parts of head largely dusky brown; region surrounding 

 mouth dusky; gUl covers partly dusky, with large dark chromata- 

 phores on inside; anterior spine of dorsal, and distal third of spinous 



