SOUTH AMERICAN NEMATOGNATHI. 127 



Rhamdia humilis Eigenm. & Eigenm. Proc. Gal. Acad. 2d Ser. i, 



126, 1888 (name only). 

 Habitat: Marafion to Venezuela. 



86, Rhamdia cinerascens. 



Pimelodus cinerascens Giinther, Proc. Zool. Soc. Lond. 1860, 237, 

 pi. 10, fig. A (Esmeraldas); Giinther, Cat. Fish. Brit. Mus. v, 

 130, 1864 (Guayaquil; Esmeraldas); Steindachner, Fisch-Fauna 

 des Cauca & Fliisse bei Guayaquil, 44, 1880 (Eivers near Guaya- 

 quil). 



Rhamdia cinerascens Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. 

 i, 126, 1888 (name). 



Habitat: Western slopes of Ecuador. 



87, Rhamdia pentlandi, 



Pimelodus pentlandi Cuv. & Val. Hist. Nat. Poiss. xv, 183, pi. 435, 

 1840 (tributaries of Lake Titicaca); Hyrtle, Denk. Ak. Wien, 

 xvi, 1859, 16 (vertebne 12 + 4-f 24); Giinther, Cat. Fish. Brit. 

 Mus. v, 129, 1864 (types); Steindacher, SB. Ak. Wien, Ixxiv, 

 1876, Ichthyol. Beitr. iv, 48 (Monterico; Tullumayo); Stein- 

 dachner, Flussfische Siidamerika's, iv, 25, 1882 (Rio de Huam- 

 bo.) 



Rhamdia pentlandi Eigenm. & Eigenm. Proc. Cal. Acad., 2d Ser. 

 i, 126, 1888, (name). 



Habitat: Peruvian Andes. 



88, Rhamdia quelen, 



Pimelodus quelen Quoy & Gaimard, Voy. Uran. Zool. pi. 49, 

 figs. 3-4, 1824. 



Rhamdia quelen Eigenm. & Eigenm. Proc. Cal. Acad. 2d Ser. vol. 

 i, 126, 1888 (Santa Clara; Rio Mucuri; Juiz de Fora; Cam- 

 pos; Rio Jequitinhonha; Mendez; Rio de Janeiro; Macacos; 

 Sao Matheos; Rio Parahyba; Cannavierias; Rio Grande do Sul). 



Pimelodus queleni Giinther, Cat. Fish. Brit. Mus. v, 123, 1864 (Bra- 

 zil). 



Rhamdia queleni Bleeker, Nederl. Tijdschr, Dierkunde, i, 101, 1863 

 (name only). 



Pimelodus (Rhamdia} queleni Steindachner, SB. Ak. Wien, Ixxiv, 

 1876, Siisswasserfische siidostl. Bras, iii, 64 (Rio Parahyba, near 

 Juiz de Fora; Campos; Rio Doce; Porto Alegre; Cannavierias; 

 Amazon, near Para; Bahia). 



Heterobranchus sextentaculutus Agassiz, Gen. Spec. Pise. Bras. 28, 

 plate 11 (12 in. long, loc.?) 



Pimelodus sellonis Miiller & Troschel, Horaa Ichthyol. iii, 2, 1849 

 (Brazil). 



IPimelodus bahianus Castlenau, Anim. de PAm. du Sud, 35, pi. xvi, 

 fig. 2, 1855 (Bahia). 



