Dec. 28, 1916. FisHes oF PANAMA— MEEK AND HILDEBRAND. 259 
anteriorly by 2 slightly enlarged plates; a cross row of small plates 
varying from a few to several in number between pectorals; 18 or 19 
scutes from anal to base of caudal; origin of dorsal over or slightly in 
advance of ventrals, the anterior rays of dorsal reaching past tips of the 
posterior rays when deflexed, not much shorter than head; caudal fin 
truncate, the upper rays the longest; the upper spine with a filament; 
anal fin small, the spine a little shorter than greatest width of head; 
ventral fin reaching a little past origin of anal, the spine somewhat 
produced, fleshy at tip; pectoral fins of about the same length as the 
ventrals, reaching nearly or quite to the base of the latter, 1.25 to 1.7 
in head. 
Color grayish above, pale below; upper surface sprinkled with small 
brownish dots and lines; 2 or 3 series of dusky spots sometimes present 
on the ventral surface of caudal peduncle; fin rays with dark spots, these 
most numerous on pectorals where they are not only present on the 
rays but on the interradial membranes also. 
There are 6 specimens, ranging from 235 to 265 mm. in length, in the 
present collection. All are from the lower Rio Tuyra Basin. Although 
the type of this species was taken inthe Rio Mamoni, no specimens were 
secured there by us. 
15. Loricaria capetensis Meek & Hildebrand. 
Loricaria capetensis Meek & Hildebrand, Field Mus. Nat. Hist. Pub., 
Zool. Ser., X, 1913, 80 (Rio Capeti, tributary Rio Tuyra, Panama). 
Head 4.8 to 4.9; depth 12 to 12.5; D. I, 7; A. I, 5; lateral scutes 30 or 
3. 
Body depressed throughout; head of moderate width; snout rather 
acute, its margin granulate, 1.8 to 1.9 in head; interorbital 5.6; mouth 
narrow; teeth bifid, the inner cusp much longer than the outer, each 
jaw with about 8 teeth on each side; the lips papillose, each with rather 
short fringes or tentacles, the longest not nearly reaching gill-opening; 
temporal and occipital plates and predorsal scutes striate and carinate; 
sides anteriorly with 3 keels, the third or upper one present on 11 or 12 
scutes, the other 2 coming very close together, but not completely 
united on the 19th to 22nd scute; ventral surface of head naked; abdomen 
with a lateral row of plates, bordered on each side by a naked area, the 
median line with 2 or 3 rows of small granular plates, enlarged between 
the ventrals; a single enlarged plate in advance of vent; 17 or 18 scutes 
from anal to base of caudal; origin of dorsal slightly behind base of 
ventrals; the anterior rays reaching past the posterior when the fin is 
deflexed, the longest ray notably longer than head; caudal fin truncate, 
the upper spine produced into a filament, about equal to length of body 
