82 Fretp Museum oF Natura History — Zo6oLocy, Vor. X. 
cardiform, about equal in both jaws; lower lip broad, papillose; top 
of head smooth; lateral keels very weak, completely united posteriorly; 
abdomen with 3 series of plates between the lateral ones; anal plate 
in contact with 3 plates; dorsal fin high and pointed, its first ray 0.7 to 
o.8 in head; pectoral spines reaching from about first fourth to first 
half of ventral, .9 to 1.2 in head; width of body at first anal ray 5.0 to 
5-8 in length of caudal peduncle; males with bristles on sides of head; 
both lobes of caudal produced into long filaments. 
Color dark brownish, a dark band on each side from snout to caudal, 
wider and better defined on sides of head and body, becoming faint 
or disappearing on caudal portion of the body; top of head with a few 
irregular dark streaks; under side yellowish, with darker median line 
on caudal peduncle, and more or less mottled with darker laterally; 
first 2 or 3 rays of dorsal fin black or marbled with black, rest of dorsal, | 
pectorals and ventrals with black spots, these usually present on anal 
also; a black band on each lobe of the caudal. 
Pacific slope of eastern Panama. 
Oxyloricaria citurensis sp. nov. 
Type No. 7585, F. M. N. H.; length 194 mm.; Rio Cupe, Cituro, 
Panama. 3 
Head 4.5 to 5.1; depth 8 to 10.0; D. I, 7; A. I, 5; scutes 16 or 17 
+ 13 or 14. 
Body elongate, moderately depressed; depth of head 2.3 to 2.5 in 
its length, width 1.4 to 1.5; eye 6.8 to 8.3; interorbital 3.3 to 3.6; snout 
rounded, its length 1.7 to 1.9 in head; teeth cardiform, about equal 
in both jaws; lower lip broad, with papille; top of head smooth, lateral 
keels weak, completely united posteriorly; abdomen with 6 or 8 rows 
of plates between the lateral ones; anal plate preceded by three plates; 
dorsal fin high, pointed, its first ray 0.8 to 1.0 in head; pectoral spines 
reaching about first fourth of ventrals, 1.1 to 1.2 in head; ventrals 1.1 to 
1.2; width of body at first anal ray about 4.1 to 4.6 in caudal peduncle; 
upper lobe of caudal produced; sides of head without bristles or with 
very short ones. 
Color dark grayish brown, top of head and body with faint dark 
spots, a few dark spots on dorsal, caudal and pectoral fins; under sur- 
face light with yellowish tinge. 
Tuyra River basin. 
