EIGENMANN: the freshwater fishes of BRITISH GUIANA 215 



Callichthys Linnaeus. 

 Callichthys Linn^us, Amoen. Acad., I, 1754, 317. — Cuvier and Valenciennes, 



Hist. Nat. Poiss., XV, 1840, 294 (asper = callichthys). — Bleeker, Nederl. 



Tijdschr. Dierk., I, 1863, 82 {tamoatn = callichthys). 

 Cataphractus Bloch, Ausl. Fische, VIII, 1794, 80 (preoccupied in mammals). — 



Lacepede, Hist. Nat. Poiss., V, 1804, 124 (callichthys). — Swainson, Class. 



Fishes, Amph., and RejJt., II, 1839, 304 (clepressus = callichthys). 



Type, Silurus callichthys Linnaeus. 



Characters given in the key to the genera. 



86. Callichthys callichthys Linnaeus. 



Callichthys tamoata Linn^us, Mus. Adolphi Fred., 1754, 731. — Bleeker, " Silures 

 de Surlname," 1864, 22 (Surinam). 



Silurus callichthys Linn^us, Syst. Nat., ed. 10, I, 1758, 307 (America); ed. 12, 

 I, 1766, 506.— Gmelin, Syst. Nat., I, iii, 1788, 1361. 



Cataphractus callichthys Eigenmann and Eigenmann, Proc. Cal. Acad. Sci., (2), I, 

 1888, 164 (Rio Janeiro; Pernambuco; Juiz de Fora; Bahia; Mendez; Macacos; 

 Porto Seguro; Surinam). 



Callichthys callichthys Eigenmann and Eigenmann, Occasional Papers Cal. Acad. 

 Sci., I, 1890, 452. — von Ihering, Slisswasserfische d. Rio Grande do Sul, 1893, 

 21.— Eigenmann, Ann. N. Y. Acad. Sci., VII, 1894, 633 (Rio Grande do Sul).— 

 Lahille, Rev. Mus. de la Plata, VI, 1895, 272 (Puerto Viejo). — Pellegrin, 

 Bull. Mus. d'Hist. Nat., 1899, 158 (Apure).— Eigenmann, Ann. Carnegie 

 Mus., IV, 1907, 123 (Bahia Negra); Repts. Princeton Univ. Exp. Patagonia, 

 III, 1910, 402. 



Callichthys asper Quoy and Gaimard, Voy. Uranie et Physicienne, ZooL, 1824, 

 232. — Cuvier and Valenciennes, Hist. Nat. Poiss., XV, 1840, 302 (Cayenne; 

 Rio Janeiro).— Kner, SB. Akad. Wiss. Wien, XVII, 1855, 107 (Para Rio; 

 Surinam; Bahia). — CASTELNAU,Anim. Am. Sud, Poiss., 1855, 38 (Bahia; name 

 only). — Bleeker, Ichth. Arch. Ind. Prodr., 1, 1858, 53. — GIjnther, Catalogue, 

 V, 1864, 226 (Bahia; Para).— Cope, Proc. Am. Philos. Soc, XVII, 1878, 

 681 (Nauta).— Perugia, Ann. Mus. Genova (2), X, 1891, 636 (Chaco 

 Centrale) . 



Cataphractus depressus Swainson, Class. Fishes, Amph., and Rept., II, 1839, 304 

 (based on Bloch, pi. 377). 



Callichthys coelatus Cuvier and Valenciennes, Hist. Nat. Poiss., XV, 1840, 308 

 (Rio Janeiro). — Mtjller and Troschel, in Schomburgk, Reisen, III, 1848, 

 630 (trenches). — Gunther, Catalogue, V, 1864, 227 (copied). 



