FISHES OF THE FAMILY LORICARIIDA, Ril 
al 
of the inner angle of the gill-opening ; an anal plate, bordered anteriorly by 3, these 3 
again by 5. First dorsal ray 1-1} times the length of head; pectoral spine extending 
to base of ventral (young) or a little beyond; ventral rays increasing in length from 
the innermost outwards, or the two outer branched rays subequal ; outer (spinous) rays 
of pectoral and ventral and anterior ray of dorsal not produced ; outer caudal rays 
rather stout at the base, probably elongate. Breadth of body at level of first anal ray 
4; times in the distance from that point to the caudal. Back with 5 dark cross-bands, 
the first through the base of the dorsal; head and anterior part of body with small 
blackish spots; a black stripe on each side of the snout running forward from the eye; 
all the fins with dark spots on the rays; caudal dark at the base and with a dark 
intramarginal band. 
The above description is based on one of the types of the species, 140 mm. in total 
length, from Coary, Middle Amazon, and on a specimen of 80 mm. from Posadas, 
R. Parana, Paraguay System. 
5, LORICARIA LANCEOLATA. 
Loricaria lanceolata Giinth. Proc. Zool. Soc. 1868, p. 235, fig. 3; Bouleng. 1b. 1887, p. 277. 
Length of head about 43 times in the total length. Breadth of head 14 times in its 
length, diameter of eye 73—9 times, interorbital width 53-34 times, length of snout 
twice. Males armed with bristles on the sides of the head, on the occipital region and 
nuchal scutes, and on the pectoral spine. Head without ridges, except a weak pair on 
the supraoccipital ; orbital notch well developed, triangular; lips papillose, with short 
marginal fringes, the lower moderately broad, rounded or slightly emarginate ; free 
portion of barbel nearly equal to diameter of eye; teeth well developed, 7-8 on each 
side in both jaws. 29-30 scutes in a longitudinal series, 15-16+ 14-15, the lateral 
keels weak, obtuse, united posteriorly ; scutes in front of the dorsal not, or very weakly, 
carinate. Lower surface of head naked ; abdomen with 3-4 series of plates between 
the lateral series, anterior plates much smaller, extending to the level of the middle of 
gill-openings ; an anal plate bordered anteriorly by 3, these 3 again by 5. First dorsal 
ray as long as the head ; pectoral spine not reaching base of ventral ; first or first and 
second branched rays of ventral the longest ; outer rays of caudal produced. Breadth 
of body at level of first anal ray 43-5 times in the distance from that point to the 
caudal. Back with obscure cross-bands; a dark stripe on each side of the snout 
running forward from the eye. Dorsal blackish, with a light area at its base and on 
the upper part of the posterior half of the fin; pectorals, ventrals, and anal blackish, 
with their basal part light; caudal dark at the base and in its outer half. 
Total length 150 mm. 
Three specimens: Xeberos and Canelos, Upper Amazon. 
