FISHES OF THE FAMILY LORICARIID. 293 
its middle in the others. Breadth of body at level of first anal ray 34-4 times in the 
distance from that point to the caudal. Head with dark crossbands or irregular 
patches ; back with 3 or 4 broad dark cross-bands; fins with dark spots, or more or 
less completely blackish. In other characters like ZL. cataphracta. 
Total length 205 mm. 
Paraguay. 
34, fLORICARIA MACRODON, 
Loricaria macrodon Kner, Denkschr. Ak, Wien, vi. 1854, p. 79, pl. ii.; Giinth. Cat. Fish. v. p. 255 
(1864). 
Very closely allied to the preceding species, but with shorter fins, a somewhat 
broader and shorter body, and a longer snout. Head nearly as broad as long, its 
length 45 times in the total length. Length of snout 13-15 times in that of the head. 
First dorsal ray less than the length of head. Pectoral spine extending to anterior 4} 
of ventral. Breadth of body at level of first anal ray 33 times in the distance from 
that point to the caudal. Fins with dark spots. 
The typical specimen, from the Rio Cujaba, is 260 mm. in total length. 
35. LORICARIA VETULA. 
Loricaria vetula Cuv. & Val. Hist. Nat. Poiss. xv. p. 466 (1840) ; Val. Voy. d’Orbigny, Poiss. 
pl. vi. fig. 2 (1847) ; Giinth. Cat. Fish. v. p. 256 (1864). 
Length of head 4,44 times in the total length. Breadth of head nearly equal to 
its length. Diameter of eye 9-11} times in the length of head, interorbital width 
5 times, length of snout twice. 4 or 5 teeth on each side in the upper jaw, 6-8 in 
the lower. 36-37 scntes in a longitudinal series, 21-23+13-15. In the largest 
example (480 mm.) the abdomen covered with numerous very small granular plates 
to the level of the middle of the gill-opening ; a granular patch on the lower surface 
of the head in front of each gill-opening. In smaller examples (240 mm.) abdomen 
naked except for the lateral series of plates and a median strip of 2 or 3 irregular series 
of small granular plates, sending a branch anteriorly on each side to the base of the 
pectoral. Pectoral spine extending to anterior 3 of ventral, or, in the larger specimen, 
beyond its middle. Dorsal with a series of dark spots on the posterior half of each 
interradial membrane. Pectorals, ventral, and caudal dark, with indistinct spots. In 
other characters similar to L. cataphracta. 
Total length 480 mm. 
Three specimens (including the type of the species): Rio Janeiro; Buenos Ayres. 
36. fLORICARIA VARIEGATA. 
Loricaria variegata Steind. Denkschr. Ak. Wien, xli. 1879, p. 165, pl. iii. 
Length of head 5 times in the total length. Breadth of head 14 times in its length, 
