ANNOTATED LIST OF THE SPECIES 
199. ANcIsTRUS CIRRHOSUS (Valenciennes) 
199 
Hypostomus cirrhosus Cuvier and Valenciennes, 1840, Hist. Nat. Poiss., XV, 511, Rio de Janeiro, 
Buenos Aires; 
Valenciennes, in d’Orbigny, 1847, Voy. Amer. Merid., IX, atlas ii, pl. vii, fig. 3. 
Ancistrus cirrhosus Ixner, 1853, Denksch. KIX. Akad. Wiss. Wien, VII, 272, Rio Guaporé; 
Eigenmann and Higenmann, 1889, Proc. Cal. Acad. Sei., (2), II, 48; 
Eigenmann and Eigenmann, 1890, Occ. Papers Cal. Acad. Sci., I, 446; 
Eigenmann and Eigenmann, 1891, Proc. U.S. Nat. Mus., XIV, 43; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 411; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 239. 
Chaetostomus cirrhosus Giinther, 1864, Cat. Fish. Brit. Mus., V, 247; 
Steindachner, 1882, Denksch. Kix. Akad. Wiss. Wien, XLVI, 7, Huallaga; 
Boulenger, 1887, Proc. Zool. Soc. London, 277, Canelos. 
Xenocara cirrhosa Regan, 1904, Trans. Zool. Soc. London, XVII, 256; 
Regan, 1913, Ann. Mag. Nat. Hist., (8), XII, 281, Rio Ucayali. 
Amazons to Huallaga and Guaporé rivers 
Fie. 23. Fishing with tarafa, or throw net, along the banks of the Ucayali during 
the upstream migration of the fishes. 
Subfamily: HY POPTOPOMATINAE 
With no more than moderate elongation of the caudal peduncle, but differing 
from the nearer Hypostomatinae in the exposure of the lower transverse part of the 
clavicles and coracoids as two pairs of plates between the bases of the pectoral fins. 
Margin of snout more or less well plated; preopercle without spines; pharyn- 
geals edentulous; teeth in single series; upper part of body enclosed in bony scutes 
forming five longitudinal series anteriorly on each side of caudal peduncle, 3 poste- 
riorly. 
