194 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
a. Scales above lateral line arranged in oblique series which are not parallel with it. 
b. Scales comparatively large, less than nine in a vertical series between first dorsal spine and lateral line; coloration 
olivaceous, adult nearly plain, young with two or more dusky lateral stripes which disappear with age; fins 
blackish. 
c. Scales 5 or 6-52-15 (lateral line with 49 pores) ; scales above lateral line on anterior part of body more or less 
enlarged, especially in adult, 
d. Scales above lateral line not much enlarged, about 9 in an oblique series from first dorsal spine to lateral line; 
profile of head anteriorly rounded surinamensis, 146 
cc. Scales 7 or 8-46-15 (lateral line with 54 pores); scales above lateral line anteriorly not especially enlarged. .. bicolor 
bb. Scales rather small, more than 9 in a vertical series between first dorsal spine and lateral line. 
c. Body not striped longitudinally with yellow or blue; preorbital narrow; gillrakers x + 13. 
/. Anterior part of body with a black vertical bar. 
(j. Body with 2 lengthwise bands; humeral bar brownish; a dark caudal spot, and a spot on the back of the caudal 
peduncle '. spleniatus 
cc. Body with longitudinal stripes of blue or yellow or both; young with a black blotch at base of caudal; preorbital 
broad; gillrakers x + 16. 
h. Anterior part of body with 2 broad, dark crossbars, the one from nape obliquely forward through eye, other from 
front of dorsal downward; behind these a series of horizontal stripes alternately yellow and blue; pectoral 
longer than head; second anal and fourth dorsal spines nearly equal. 
i. Blue stripes on side as broad as a scale, each more than two-thirds width of golden-yellow interspaces and each 
very faintly edged with darker; vertical bands on head and shoulder jet-black virginicus, 147 
hh. Anterior part of body without dark crossbars, body sometimes plain yellowish, back usually violet with 4 or 5 
yellow lines; silvery below; snout short, not longer than width of the eye; dorsal fin very deeply notched, 
with feeble spines; the second and third anal spines equal in length; the body a little more oblong than in 
surinamensis serrula 
Fig. 56 . — Anisolremus surinamensis. 
146. Anisotremus surinamensis (Bloch). Pompon. 
Head 3.14; depth 2.2; eye 4.5; snout 2.6; maxillary 3; D. xii, 16; A. iii, 8 or 9; scales 5-50-13. 
Body deep, back elevated, greatly compressed; profile steep, nearly straight from snout to above eye, 
a. slight depression in front of nostril and another in interorbital space; profile from interorbital space 
to dorsal strongly arched in a broad curve. Head moderate; cheek deep; mouth rather small; jaws 
subequal, maxillary barely reaching front of orbit; ventral line of body nearly straight ; caudal peduncle 
moderately long, its least depth equal to snout; teeth in several bands, outer enlarged and canine-like. 
Fourth dorsal spine strongest and longest, its length 2.2 in head; soft dorsal as well as anal, pectoral, 
ventrals, and caudal densely covered with minute scales; height of longest soft dorsal ray 3 in head; 
second anal spine very stout, its length equal to that of fourth dorsal spine; third anal spine broad at 
