122 MEMOIRS OF THE CARNEGIE MUSEUM. 



Fiske, 247, and XIX, 1875 (Rio das Velhas); Peters, Mb. Akad. Wiss. 

 Berlin, 1877, 473 (Apure); Steindachner, Fisch-f. Magdalenen Str., 4, 

 1878 (Para); Boulenger, Proc. Zool. Soc, 1887, 282 (Canelos); Steindach- 

 ner, Flussf. Slidam., II, 44, 1881 (Amazon from Para to Teffe; Xingu at Porto 

 do Moz; Lake Manacapuru; Rio Branco; Borba; C'ai(,'ara; Essequibo; Surinam; 

 Maroni River in Guiana) ; Eigenmann and Eigenmann, Proc. U. S. Nat. Mus., 

 XIV, 1891, 62; Perugia, Ann. Mus. Civico Storia Nat. Genova, Ser. 2, Vol. X, 

 56, 1891 (Central Chaco); Eigenmann, Ann. N. Y. Acad. Sci., VII, 1894, 

 626 (Marajo); Boulenger, Trans. Zool. Soc, XIV, 38, 1896 (Paraguay). 



Gymnotus carapus Eigenmann and Ward, Proc. Wash. Acad. Sci., Vol. VII, 1905, 

 175 (Orinoco, south to Paraguay; Rio das Velhas); von Ihering, Os Peixes 

 do Brazil, Part 1 A, 284 (Venezuela, Amazonas, Brazil Central). 



Gymnotus cequilahiatus Humboldt, Recueil d'Observat., Zool. et Anat. Comp., i, 

 46, pi. 10; Kaup, Apod., 142, 1856; GtJNTHER, Cat. VIII, 7, 1870; Eigen- 

 mann AND Ward, Proc. Wash. Acad. Sci., Vol. VII, 1905, 176 (Magdalena and 

 Guayaquil) . 



Sternopygus cequilabiatus MtJLLER and Troschel, Horse Ichthyol., Ill, 15, 1849; 

 Steindachner, Fisch-f. Magdalenen Str., 53, pi. XIV, fig. 1, 1878 (Magda- 

 lena River); id., Fisch-f. Cauca and Guayaquil, 36 and 50, 1880 (Cauca and 

 Guayaquil); Eigenmann and Eigenmann, Proc. U. S. Nat. Mus., XIV, 

 1891, 62; Boulenger, Boll. Univ. Torino, XIII, 1898 (Rio Guayas); Stein- 

 dachner, Denkschr. Acad. Wiss. Wien, LXII, 59, 1902 (Rio Magdalena at 

 Baranquilla) ; Starks, Proc. U. S. Nat. Mus., XXX, 1906 (Guayaquil); 

 Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 450 (Magda- 

 lena and Guayaquil). 



Gymnotus cequilabiatus nigriceps von Ihering, Os Peixes do Brazil, Part 1 A, 285 

 (Maranhao). 



Sternopygus cequilabiatus nigriceps Eigenmann, Repts. Princeton Univ. Exp. 

 Patagonia, III, 1910, 450 (Maranhao). 



Carapus macrourus Cuvier, Regne Animal, cd. I, II, 237, 1817. 



Carapus arenatus Eydoux and Souleyet, Voy. Bonite, Zool., I, p. 210, pi. 8, 

 fig. 2, 1836. 



Carapus sanguinolentus Castelnau, Anim. Am. Sud. Poiss., 85, pi. 32, fig. i, 1855 

 (Urubamba or upper Ucayale) . 



Sternopygus marcgravii Reinh., Vidensk. Meddel. Naturh. Foren. Kjobcnh., 1852; 

 and Wiegm. Arch., 1854, 180. 



1764 C. M., 12541 I. U. M., 104, 155-500 mm. Botanic Garden, Shideler. 



1765 C. M., 12592 I. U. M., eighteen, 200-400 mm. Georgetown Trenches, 

 Eigenmann. 



1766 C. M., 12593 I. U. M., ten, 150-450 mm. Creek below Potaro Landing, 

 Eigenmann. 



