64 Field Columbian Museum — Zoology, Vol. Y. 



gg. Caudal peduncle strong, its least depth page 



2 in head; a broad, dark lateral band; 



no spots on upper half of body boucardi 67 



cc. Sides of body with 8 to 10 dark vertical bars ; 

 body very robust; caudal peduncle strong, 



1^ in body; depth of body 3 in its length ornatus 68 



bb. Scales small, more than 40 in the lateral series, 

 h. Origin of dorsal fin nearer snout than base 



of caudal; scales 8-42-4; depth 5 area 69 



hh. Origin of dorsal fin midway between pos- 

 terior half of eye and base of caudal fin ; 



depth 4^4 ' nazas 70 



aa. Body much compressed, snout pointed, 

 i. Scales deeper than long; body usually deep, 

 its depth 3 to 4 in its length, 

 j . Lateral line decurved, below the middle of the 

 body ; 6 to 9 rows of scales above (including 

 lateral line) lateral line, 2 or 3 rows below it. 

 k. Scales large, less than 40 in the lateral 

 series; less than 20 scales in a series before 

 dorsal fin. 



I. Lateral line complete, or nearly so. 



m. Origin of dorsal fin midway between 

 base of caudal and nostril; anal fin 

 long, its base 1^ to 2 in head. 



n. Eye large, 3 in head; anal rays 9 forlonensis 70 



nn. Eye small, 3 x /2 to 3%" in head; anal 

 rays 8. 

 o. Lateral band on the posterior portion 



of the body only lutreusis 7 1 



00. Lateral band extending from eye to 



base of caudal macrostomits 72 



mm. Origin of dorsal fin midway between base 

 of caudal and pupil ; anal base long. 1 % 

 in head; caudal peduncle slender, its 

 least depth 2% in body garmani 73 



II. Lateral line incomplete, on n to 13 scales; 

 anal rays 9 ; lateral line much decurved ; 



scales 9-38-2 santamarioe 74 



kk. Scales small, more than 40 in the lateral 



series; about 24 scales before dorsal fin formosus 74 



jj. Lateral line on or above the middle of the 



body; scales 5-35-6; head 4; depth 4^2 frigidus 75 



ii. Scales not deeper than long; body slender, 



its depth 4}4 in head; anal rays 10 santarosalice 75 



