EIGENMANN: the freshwater fishes of BRITISH GUIANA 277 



The types of H. gracilis from the River C'upai, 8UU miles from the sea, are 

 much slenderer. 



Anisitsia Eigenmann. 



Anisitsia Eigenmann, Smiths. Misc. Coll., Quarterly Issue, XLV, 1903, 144. 



Type, Anodus notatus Schomburgk. 



Similar to Anodus, but the scales increasing in size and decreasing in number 

 from the lateral line downward. 



134. Anisitsia aetata (Schomburgk). 

 Anodus notatus Schomburgk, Fishes Brit. Guiana, I, 1842, 218, pi. 15 (Rio 



Negro) . 

 Hemiodus notatus Cuvier and Valenciennes, Hist. Nat. Poiss., XXII, 1848, 



119, pi. 638. — Castelnau, Anim. Am. Sud, Poiss., 1855, 64 (Paraguay).^ 



Kner, "Familie der Characinen," i, 1859, 22 (Guapore). — Gunther, Cat- 

 alogue, V, 1864, 298 (Essequibo; Surinam). — Steindachner, "Flussfische 



Siidamerika's," ii, 1881, 40 (Rio Trombetas; Rio Guapore). — Eigenmann 



and Eigenmann, Proc. U. S. Nat. Mus., XIV, 1891, 49. 

 Anisitsia noiata Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 



423. 

 Hemiodus unimaculatus (not of Bloch) Mijller and Troschel, in Schomburgk, 



Reisen, III, 1848, 633 (Essequibo); Horte Ichth., Ill, 1849, 9. 

 Hemiodus microcephalus GtJNTHER, Catalogue, V, 1864, 298 (River Capin). — 



Eigenmann and Eigenmann, Proc. U. S. Nat. Mus. XIV, 1891, 49. 



Ten specimens, 80-112 mm. Christianburg. (C. M. Cat. No. 1933a-&; 

 I. U. Cat. No. 12191.) 



Three specimens, 64-80 mm. Kumaka. (C. M. Cat. No. 1934a; I. U. Cat. 

 No. 12200.) 



Sixteen specimens, 74-89 mm. Malali. (C. M. Cat. No. 1935a-c; I. U. 

 Cat. No. 12192.) 



Eighteen specimens, 71-111 mm. Bartica, rocks. (C. M. Cat. No. 1936a-e; 

 I. U. Cat. No. 12193.) 



Two specimens, about 190 and 195 mm. Bartica, rocks. (C. M. Cat. No. 

 1937a; I. U. Cat. No. 12194.) 



Twenty-seven specimens, 58-95 mm. Wismar. (C. M. Cat. No. 1939a-e; 

 I. U. Cat. No. 12195.) 



Five specimens, 91-112 mm. Crab Falls. (C. M. Cat. No. 1940a-6; I. U. 

 Cat. No. 12196.) 



