THE GYMNOTID EELS OF TROPICAL AMERICA. 141 



Sternarchorhynchus mulleri Castelnau, Anim. Amer. Sud. Poiss., 1855. 



Sternarchus mormijrus Steindachner, Die GymnotidsD, 5, pi. 1, fig. 3 (Mara- 

 bitanos); Gunther, Cat., VIII, 4, 1870 (Peruvian Amazon) ; Eigenmann and 

 EiGENMANN, Proc. U. S. Nat. Mus., XIV, 1891, 62; Eigenmann and Bean, 

 Proc. U. S. Nat. Mus., Vol. 31, 666 (Lower Amazon) ; Eigenmann and Ward, 

 Proc. Wash. Acad. Sci., VII, 1905, 167 (Marabitanos, Peruvian Amazon); 

 von Ihering, Os Peixes do Brazil, Part 1 A, 1907; Eigenmann, Repts. 

 Princeton Univ. Exp. Patagonia, III, 1910, 449 (Peruvian Amazon). 



Fig. 9. Sternarchorhynchus oxyrhijnchus (MuUer & Troschel). 



Sternarchus (Rhamphosternarchus) curvirostris Boulenger, Proc. Zool. Soc, 1887, 

 282, pi. XXIV (Canelos). 



Sternarchorhynchus curvirostris Eigenmann and Eigenmann, Proc. U.S. Nat. Mus., 

 XIV, 1881, 62; Eigenmann and Ward, Proc. Wash. Acad. Sci., VII, 167 (Cane- 

 los); VON Ihering, Os Peixes do Brazil, Part 1 A, 1907; Eigenmann, Repts. 

 Princeton Univ. Exp. Patagonia, III, 1910, 449 (Canelos), 



3186 C. M., three, 235-260 mm. Santarem, Dec. 12, 1909, Haseman. 



3187 C. M., one, 290 mm. Para, Jan. 22, 1910, Haseman. 



1807 C. M., one, 185 mm. Warraputa, Eigenmann. 



1808 C. M., 12590 I. U. M., four, 165-240 mm. Amatuk, Eigenmann. 



Head 4.8 to 6.9, depth 9.6 to 9.8 in the length to the end of the anal; anal 

 rays 168-215. '^ Snout 1.6 to 1.8, interorbital 13 to 18 in the head; eye equal to 

 the interorbital, 8.5 to 9 in the snout, 13 to 14 in the head. 



Body and head compressed; width of head 2.75 to 4, depth of head in the 

 occipital region 1.25 to 1.9 in the greatest depth of the body; anus on, or a Httle 



'^ The number of anal rays of the specimens examined and of the type are 



Amatuk, Brit. Guiana 168 168 170 174 



Warraputa, Brit. Guiana 180 



Santarem, Brazil 192 196 197 



Para, Brazil 194 



In addition to tliis list Eigenmann & Bean record specimens of Sternarchorhynchus mormyrus from the 

 lower Amazon with 191 to 194 rays (size not given). 



