May, igo2. Thk IciiriivoLofiv ok Mkxko — ^Mkkk. 121 



Awaous taisiaca Lichinstein. 



La Antigua; Balsas; Puente de Ixtla. 



Gobius parvus, sp. nov. 



Type, No. 3738, F. C. M. Length, 1.95 inches. 



Locality, Rio San Francisco, La Antigua, Vera Cruz, Mexico. 



Head 4; depth 4^; D. vi-ii; A. 12; scales 30. Body short, 

 robust;* head large; snout blunt, rounded; mouth slightly inferior, 

 little oblique, its gape extending to vertical from pupil; eye small, 

 partly superior; interorbital area narrow, its width little less than 

 half diameter of eye; diameter of the eye 3^ in the length of the 

 head; snout 4J in head; dorsal fins not connected, the spinous 

 dorsal of females low, longest spine a little more than half the 

 length of the head; in the male the dorsal spines are about ^ to i 

 longer than the head, the ' tips extending to middle of dorsal 

 fin; caudal long and pointed, its length in the female 3^^ in the 

 length of the body, in the male 3; pectoral slightly less than length 

 of head; \entral i g in head; scales ctenoid. 



Dark olivaceous, mottleci with darker; a dark bar on dorsal 

 region from base of posterior half of spinous dorsal; this bar is 

 followed by three others from base of soft dorsal and one on can" 

 dal peduncle; 5 or 6 narrow dark streaks on lower half of sides 

 extending downward and forward to base of anal; 2 black spots 

 at base of caudal fin; dorsal fins of both sexes barred; caudal fin 

 of female with narrow dark bars, none on males; anal fin with 

 a dark margin. 



This species resembles G. s/igma/iciis. It is more robust and 

 of different coloration. Longest specimen 2\ inches. La 

 Antigua. 



Gobius claytonii, sp. nov. 



Type, No. 3740, F. C. M. Length. 2.30 inches. 



Locality, Ri.o San Francisco, La Antigua, \'era Cruz, Mexico. 



Head 3|; depth 5^; D. vi-12; A. 13; scales 42-15. Body elon- 

 gate, subterete and tapering to caudal; head moderate; snout very 

 blunt; mouth terminal, broad, its gape horizontal; eyes large, 

 high upon the head and close together; interorbital width less 

 than half diameter of pupil; diameter of eye equals the length of 

 the snout, 3.-^ in length of the head; no scales on dorsal sur- 

 face in front of spinous dorsal; scales ctenoid; breast and region 

 under ventral without scales; spinous dorsal low. longest spine 

 about ?, length of the head; caudal fin long and pointed, its mid- 



