THE FISHES OF NEW JERSEY. 
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Genus APHREDODERUS Le Sueur. 
The Pirate Perches. 
Aphredoderus sayanus (Gilliams). 
PLATE 36. 
Pirate Perch. Pirate. Mud Perch. 
Head 2%; depth 3; D. IV, 12; A. III, 7; scales 44 in lateral 
line to base of caudal and 3 more on latter; 9 scales between 
origin of spinous dorsal and lateral line; 11 scales in a vertical 
series between origin of spinous anal and lateral line; mandible 
2!/,;, in head; third dorsal spine 24/,; second dorsal ray 134; 
third anal spine 3; second anal ray 1°/,,; caudal 17/,; pectoral 
1%; ventral 124; snout 3% in head, measured from tip of upper 
jaw; eye 434; maxillary 24%4; interorbital space 3*/;. Body 
rather deep, upper profile a little more convex than lower. Caudal 
peduncle compressed. Head large, upper profile a little concave. 
Snout broad, rather convex. Eye circular, small, anterior. 
Mouth with mandible well protruding. Teeth small. Maxillary 
reaching front rim of orbit, and its distal expansion equals 
diameter of pupil. Interorbital space broad, but slightly convex. 
Gill-rakers 3 + 10 asperous tubercles. Scales becoming a little 
smaller on predorsal region, caudal peduncle and breast. Spinous 
dorsal inserted nearer tip of mandible than base of caudal. Rayed 
dorsal inserted about midway in that distance and higher an- 
teriorly. Anal begins about midway between origin of pectoral 
and base of caudal, spines graduated to third which is longest, 
and rayed fin rounded. Caudal rather large. Pectoral about 5 
of space to anal. Ventral inserted close behind origin of pectoral, 
and reaching 74 of space to anal. Color brownish. Base of cau- 
dal with 2 transverse dusky bars with a pale one between. Length 
314 inches. Crosswicks Creek near Trenton. 
Color in life dusky-brown, blacker on head and caudal and 
other fins, except ventral. Iris brown. A black band from eye 
down across cheek. A sky-blue reflection just below lower mar- 
gin of opercle on shoulder-girdle. Opercle and cheek with deep 
