3176 Bulletin 4.7, United States National Museum. 



point above anterior edge of orbit, where it is abruptly curved upward 

 and backward to the origin of dorsal fin ; from the latter point it gradu- 

 ally curves downward to base of first dorsal ray, from which the descent 

 to caudal peduncle is abrupt; ventral outline evenly curved from snout 

 to caudal peduncle ; interorbital space convex, its middle portion flattened ; 

 orbit circular, nearer to posterior edge of opercle than to tip of snout, a 

 distance equal to diameter of pupil; mouth oblique, lower jaw slightly 

 projecting; lips thick; lower jaw with a frenum equal in width to 

 diameter of pupil; upper jaw protractile; maxillary covered by preorbi- 

 tal except at its distal end; teeth in 2 series on each jaw, the outer series 

 in a single row, flat or incisor-like, larger in front, growing much smaller 

 posteriorly, the inner series minute, in narrow bands, all the teeth loosely 

 attached, their tips brown-colored; no teeth on vomer or palatines ; gill- 

 membranes forming a fold across the isthmus ; gill-rakers on first arch 10, 

 short, far apart. Body covered with large, weakly-ctenoid scales; cheek, 

 opercle, and occipital portion of head with small, cycloid scales; lower 

 jaw, snout, and anterior half of interorbital space naked; bases of dorsal 

 and anal fins with a row of small scales ; inter-radial membranes of caudal 

 with very small scales on basal parts; lateral line interrupted on the 

 nineteenth transverse row of scales, beginning again 3 scales lower down 

 on the third row anterior to where it left off, and extending to base of 

 caudal; 2 short rows of mucous tubes on inter-radial caudal scales, one 

 above and the other below end of lateral line; first dorsal spine shortest, 

 others gradually longer and heavier, each spine with a ray-like attach- 

 ment projecting above and posterior to its tip; first anal spine shortest, 

 others gradually longer and heavier, the fourth three times as long as the 

 first; spines with distal attachments similar to those of the dorsal, third 

 and fourth rays longest, extending posteriorly as far as those of the dor- 

 sal; posterior edge of caudal somewhat convex; pectoral rounded; ven- 

 trals pointed, the outer ray much the longest, extending a little beyond 

 vent. Color in alcohol, light slate; scales with lighter central spots; pos- 

 terior parts of dorsal, anal, and caudal lighter; in life the head was cov- 

 ered with round and elongate spots of greenish blue on a background of 

 golden brown; side of body with bluish and brownish spots without 

 regularity of arrangement; pectoral and distal part of soft dorsal with 

 a yellowish tinge. 



In the young of this species there are 5 or 6 dark vertical bauds, about 

 equal in width to diameter of orbit, on the posterior part of the body; a 

 dark spot sometimes present just below lateral line on a vertical through 

 base of eleventh dorsal spine. 



This species differs from J\ T . nematopus and JV. nicaraguensis in having a 

 much deeper body and fewer dorsal and anal spines. Laguua del Carpinte, 

 Mexico. (Jordan & Snyder.) 



One specimen (type, No. 6162, L. S. Jr. Univ. Mus.) from Laguua del 

 Carpinte, near Tampico, Tamaulipas, Mexico, collected by J. O. Snyder. 

 Neetroplus carpintis, JORDAN & SNYDER, Bull. U. S. Fish Com. 1899 (1900), 145, Laguna 

 del Carpinte, near Tampico, Mexico. 



Page 1557. Eupomacentrus flavilatus (Gill), is the young of Eupomacen- 

 trus rectifrenum (Gill). 



