30 



length. The eye is slightly elliptical, and its longitudinal diameter equals 

 the length of the snout, or one twenty-fifth (0.04) of the total length. The 

 interorbital space equals half the diameter of the orbit, and is concave. 

 The profile is very obtuse, and the eye is situated just within the angle 

 formed by profile and crown. There are two broadly-palmated supercil- 

 iary filaments, not so loug as the diameter of the orbit; two similar but 

 smaller ones at the nostrils; also two short filaments, one on either side 

 of the nape. The lips are crenated at the sides of the mouth, though 

 not anteriorly. In addition to the row of numerous small movable teeth 

 common to all the species of the genus, there is a long recurved canine 

 tooth on each side of the lower jaw, behind the series of small teeth; also, 

 a transverse row of minute teeth on the anterior portion of the vomer. 



The dorsal fin originates just behind the nuchal filaments, at a dis- 

 tance from the snout (0.22) slightly greater than the length of the head ; 

 its spinous portion nearly equals its soft portion, the former measuring 

 0.30, the latter 0.31. A deep notch almost separates the two parts. 



The anal fin originates at a distance from the snout equal to one-half 

 the length of the body exclusive of the caudal (0.42). Its first ray meas- 

 ures 0.07, its penultimate ray 0.12, its ultimate ray 0.05. The caudal is 

 four twenty-fifths. (0.1G) of the total length, and is slightly rounded at 

 the extremity. The pectorals equal the head iu length (0.20), and barely 

 reach to the vent. The distance from the snout to the upper axilla of 

 the pectorals equals the distance to the origin of the ventrals, and also 

 the length of the ventrals (0.11). 



The lateral line is faintly indicated by a delicate line, arching above 

 the pectorals, then running straight along the middle. 



The radial formula is as follows: — D., XII-15; A., II, 15}; C, 3-6- 

 5-3; P., 14; V., 1-4. 



The color is greenish above, becoming white beneath. Twelve or 

 fourteen brownish-violet cross-bands, arrauged iu pairs, and in part 

 interrupted by three series of whitish dots, so as to form a row of quad- 

 rate blotches just above the hiteral liue. The third row of white dots 

 is more pronounced, the dots becoming short lines, and is situated on 

 the lateral line ; a fourth series, less pronounced, may be seen near the 

 lower edge of the body. 



A Y-shaped figure of brown upon the chin, the arms extending for- 

 ward, and three other fine brown lines on each side of the throat, extend- 

 ing transversely upward and backward, continued upon the cheek and 

 opercle by lines of fine brown dots. A row of similar dots may be seen 



