178 KANSAS ACADEMY OF SCIENCE. 



longer than the rest ; in the anal, the first spine and the fifth and 

 sixth rays are the longest. The height of first dorsal is contained 

 eight and one-half times in body, while the length is contained three 

 and one-half times; length of anal is contained three-fifths in sec- 

 ond dorsal ; origin of anal a little, back of origin of second dorsal ; 

 pectorals seven-eighths in head. Scales in lateral line 18 plus 

 pores 32 = 50; 7 rows of scales above lateral line and 10 below =17. 

 Head and breast naked. Body subcompressed ; mouth terminal ; 

 lower jaw included. 



Coloring : Back grayish, tessellated more or less ; there is a dark 

 band front of first dorsal, and another between both dorsals extending 

 about one-fourth down the sides; faint blue patch below eye; 

 lower edge of gills orange ; sides of body marked with nine blue 

 bands extending obliquely downwards and backwards, separated by 

 bands of orange ; in one specimen examined there were eleven such 

 blue bands, while one or two had only eight ; belly of a lighter 

 blue than bands of side. First dorsal fin edged with band of dark 

 blue, followed by a narrow band of whitish, while the basal two- 

 thirds of fin is of bright orange, with a row of light-colored inter- 

 radial spots ; outer three-fourths of second dorsal lighter orange than 

 that of first dorsal; next follows a band of light blue, while the base 

 of fin is of a darker orange than that of the outer edge ; ventrals blue, 

 with the rays blackish ; anal dark blue ; pectorals and caudal trans- 

 lucent without any coloring. 



Dorsals usually separated ; caudal rounded, truncate. 



Female smaller than male ; about one and one-half inches in total 

 length. Color darker than male, without the blue bands of its con- 

 sort, or having them but faintly marked. 



This species is distinguished from E. cim'uleum Storer, to which 

 it seems to be most nearly related, by its smaller size, less number of 

 bands on sides, absence of color in caudal fin, anal fin dark blue in- 

 stead of orange, with deep blue in front and behind, and without the 

 blue at base and edge of second dorsal. 



