REVIEW OF THE ERYTHRININ^. 109 



bb. Back without a saddle-shaped spot. 

 c. Intermaxillary with two series of teeth. 



d. Lat. 1. 25-26 (30 according to C. & V.); a black baud from edge of 

 opercle around snout, the margin of the mandible being black; 

 origin of dorsal equidistant from base of middle caudal rays and 

 base of pectoral. D. 9; A. 10. filamentosa 3. 



dd. Lat. 1. 23-25; a black band from end of opercle around snout and 

 lower jaw, continued on anterior portion of body; sides otherwise 

 light brown. Head 4-4^; depth 3i; D. 10; A. 9-11. semi/asciata 4. 

 ^ ddd. Lat. 1. 20-21. 



e. Caudal peduncle little if any longer than snout and eye; female 

 light brown; m^le with a dark lateral band and the ventrals 

 margined with black. Dorsal low, rounded, its spot indistinct, 

 confined to the middle of the anterior rays, origin of dorsal about 

 equidistant from base of middle caudal rays and base of pectoral. 

 Caudal lobes equal. Head 3f-4; depth S^; D. 10; A. 11-12. 



brevis 5. 

 ee. Caudal peduncle little shorter than the head; height of dorsal 

 much greater than length of head, the spot large and distinct 

 reaching to tip of the anterior rays, origin of dorsal equidistant 

 from caudal and posterior margin of orbit. Head 4|; depth 4|; 

 D. 10; A. 10. maxima 6. 



cc. Intermaxillary with a single series of teeth. 



/. Origin of dorsal behind origin of ventrals. 



g. Lat. 1. '^0; caudal peduncle equal to the head in length; 

 dorsal short and high, its highest rays sometimes reaching 

 caudal; origin of dorsal equidistant between bases of ventral 

 and caudal or nearer base of caudal. Upper caudal lobe much 

 longer than the lower. Dorsal spot margined with white be- 

 low; a black spot at base of lower caudal rays. Head 4-4;^; 

 depth 4J-6; D. 10; A. 11. natter er il . 



gg. Lat. 1. 23-24; caudal peduncle about equal to the head with- 

 out opercle; dorsal comparatively low, its highest ray reach- 

 ing little if any more than half way to base of caudal; origin 

 of dorsal equidistant from caudal and anterior half of eye. 

 tipper caudal lobe not much longer than lower. A dusky 

 humeral spot; lateraPscales with a bright silvery basal spot. 

 Caudal and anal faintly barred. Head 4; depth 3f-3i; D. 10; 

 A. 11. guttata 8. 



ff. Origin of dorsal over origin of ventrals, equidistant from base 

 of upper caudal rays and anterior margin of orbit. Eye 3 in 

 head. Olivaceous, a silvery spot at base of each scale; sides of 

 head silvery. Head 4^; depth 4^; D. I, 9; A. I, 9; Lat. 1. 25 

 (Cope). argyropsd. 



