346 MEMOIRS OF THE CARNEGIE MUSEUM 



206. Creatochanes melanurus (Bloch). (Plate L, fig. 4.) 

 Salmo melanurus Bloch, Ausl. Fische, VIII, 1794, pi. 381, fig. 2 (Surinam). 

 Tetragonopterus melanurus Muller and Troschel, Horse Ichth., I, 1845, 14 



(Surinam). — Cuvier and Valenciennes, Hist. Nat. Poiss., XXII, 1848, 155. 



— Gunther, Catalogue, V, 1864, 329 (British Guiana; Essequibo); Proc. Zool. 



Soc. London, 1868, 247 (Surinam). — Eigenmann and Eigenmann, Proc. U. S. 



Nat. Mus., XIV, 1891, 56.— Ulrey, Ann. N. Y. Acad. Sci., VIII, 1895, 274. 

 Creatochanes melanurus Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 



1910, 435. 



Bloch had three specimens which served him as types of melanurus, two of 

 which belonged to this species, and one to caudomaculatus. The one figured was 

 doubtless the one here called melanurus. 



Fourteen specimens, 36-124 mm. Malali. (C. M. Cat. No. 1393a-/; I. U. 

 Cat. No. 11886.) 



Eighty-one specimens, 43-138 mm. Wismar. (C. M. Cat. No. 1394a-j; I. 

 U. Cat. No. 11887.) 



Fifteen specimens, 70-95 mm. Christianburg. (C. M. Cat. No. 1395a-e; 

 I. U. Cat. No. 11888.) 



Eighteen specimens, 26-100 mm. Christianburg Canal. (C. M. Cat. No. 

 1396a-e; I. U. Cat, No. 11889.) 



Fifteen specimens, 63-84 mm. Near Freiheit, (C. M. Cat. No. 1397a-e; 

 I. U. Cat. No. 11890.) 



Twenty-nine specimens, 33-129 mm. Lama Stop-Off. (C. M. Cat. No. 

 1398a-e; I. U. Cat, No. 11891.) 



Ten specimens, 52-68 mm. Maduni Creek. (C. M. Cat. No. 1399a-c; I. 

 U. Cat, No. 11892.) 



Readily distinguished by its eccentric black caudal band. It differs from 

 C. affinis in the characters mentioned in the key. 



This species is abundant in the Demerara River and Mahaica Creek basin to 

 the coast. I did not find it in the parts of the Essequibo examined. 



207. Creatochanes caudomaculatus Gunther. (Plate L, fig. 5.) 



Salmo melanurus Bloch, Ausl. Fische, VIII, 1794, 84, PI. 381, fig. 2, part (Surinam). 



Tetragonopterus caudomaculatus Gunther, Catalogue, V, 1864, 330 (South Amer- 

 ica).— Ulrey, Ann. N. Y. Acad. Sci., VIII, 1895, 278. 



Creatochanes caudomaculatus Eigenmann, Repts. Princeton Univ. Exp. Patagonia, 

 III, 1910, 435. 



