62 GOBIID^. 



first dorsal from the eye is more than that of the snout from the 

 prseoperculum. The dorsal fins are lower than the body ; none of the 

 sjjines produced : caudal rounded, one-eighth of the total length : the 

 ventral terminates at a great distance from the anus, and has a very 

 broad basal membrane. Yellowish-olive : back and sides reticulated 

 ■with blackish ; head, dorsal, caudal and pectoral fins dotted with 

 blackish, the dots on the second dorsal forming interrupted zigzag 

 streaks ; six cross-series of dots on the caudal ; an irregular, small 

 blackish spot on the upper part of the root of the pectoral ; ventral 

 and anal fins and the whole belly yellowish-white. 

 Mexico. 



o, h. Fine specimens. Mexico. From M. Salle's Collection. 



inches, lines. 



Total length 8 



Height of the body 1 1 



Length of the head 1 8 



Greatest \ndth of the head 11 



Diameter of the eye 2| 



Length of the caudal fin 1 



Closely allied to Gohius banana, but readily distinguished by the 

 smaller scales. 



116. Gobius transandeanus. 

 D. 6 I 11. A. 10-11. L. lat. G6-68. 



Fifteen longitudinal series of scales between the second dorsal fin 

 and the anal. The height of the body is contained seven times in 

 the total length, the length of the head three times and three-fourths; 

 the head is flat, depressed, much broader than high, with the snout 

 elongate. Cleft of the mouth nearly horizontal, the upper jaw being 

 the longest. Canine teeth none ; teeth of the outer series enlarged. 

 The maxillary extends to the vertical from the anterior margin of 

 the eye. The width of the interorbital space equals the diameter of 

 the eye, which (in mature specimens) is one-fifth or one-sixth of the 

 length of the head. The head is naked ; scales ctenoid, on the nape 

 and on the anterior part of the body very small. The distance of 

 the first dorsal from the eye is considerably less than that of the 

 snout from the pra3operculum. The dorsal fins are higher than the 

 body, and the spines of the anterior dorsal are prolonged into free 

 filaments (in mature specimens) ; caudal rounded, one-fifth of the 

 total length ; the ventral terminates at a great distance from the anus, 

 and has a very broad basal membrane. Yellowish : head, body, dorsal 

 and caudal fins irregularly spotted with blackish ; anal and ventral 

 uniform white or blackish. 



Fresh waters of Western Ecuador. 



a-b, c-d. Fine specimens. "Western Ecuador. From Mr. Eraser's 

 Collection. 



