258 Frerp Museum or Naturat History — Zod Locy, Vor. X. 
to reach gill-opening; temporal and occipital plates and predorsal scutes 
carinate; sides anteriorly with 3 keels, the upper one present on 8th or gth 
scute, the second and third coming very close together, but not com- 
pletely united, on the 16th to the 18th scute; ventral surface of head 
naked; abdomen completely armed, with a series of broad plates on 
each side and two narrower median rows; a naked area behind base of 
pectorals; vent anteriorly bordered by a single plate, which in turn is 
anteriorly again bordered by 3 or 4 smaller plates; 16 to 18 scutes from 
anal to base of caudal; origin of dorsal over base of ventrals; the anterior 
rays of dorsal reaching equidistant or slightly past the posterior rays when 
defiexed, the spine a little longer than the head; caudal fin with rather 
deeply concave margin, the upper spine produced in a filament; anal fin 
small, its margin convex, the anterior rays the longest, longer than width 
of head; ventral fins reaching well past origin of anal; pectoral fins of 
about the same length as the ventrals, reaching well past the base of 
the latter, 1.25 to 1.4 in head. 
Color dark grayish brown above, slightly lighter below. The fins 
usually with dark spots on all of the rays. 
This species is represented by 19 specimens, ranging from 265 to 355 
mm. in length. 
We have at hand the paratypes of this species with which we find 
our specimens to be identical. 
Habitat: Rio Tuyra and Rio Atrato basins. 
14. Loricaria variegata Steindachner. 
Loricaria variegata Steindachner, Denkschr. K. Ak. Wiss. Wein, XLI, 
1879, 163, Pl. III (Rio Mamoni, near Chepo, Panama); Eigen- 
mann & Eigenmann, Proc. Cal. Ac. Sci., 2nd Ser., II, 1889, 36; 
Eigenmann & Eigenmann, Occ. Pap. Cal. Ac. Sci., 1890, 382. 
Head 4.45 to 4.95; depth 12 to 14; D. I, 7; A. I, 5; lateral scutes 32 
or 33. 
Body much depressed throughout; head low and broad; snout rather 
acute, granulate to the margin, its length 1.75 to 2 in head; orbital 
notch distinct; eye 8.65 to 10.7 in head; interorbital 5.2 to 6; mouth 
narrow; upper jaw with only 3 or 4 teeth on each side, lower jaw with 
about 6 on each side; the lips papillose, with long fringes, the outer 
fringe or barbel of lower lip reaching to or past gill-opening; temporal 
and occipital plates, and predorsal scutes carinate; sides anteriorly with 
2 keels, becoming united on the 14th or 15th scute; ventral surface of 
head naked; abdomen with a lateral series of scutes, bordered by a 
naked area, and then with a median row of quadrate, granular plates 
anteriorly, increased to 2 or 3 rows in advance of vent, which is bordered 
