1 66 EIGENMANN AND WARD 



9. STERNARCHORHAMPUS MACROSTOMUS 



(Giinther). 

 Siernarchtis macrostoimis Giinther, Cat., VIII, 4, 1870, Xeberos. 

 RhanipJiosternarcJnis macrostomus^ Cope, Proc. Am. Philos. 



Soc. 1878, 682 (Peruvian Amazon). 

 Sternarchorhynchus macrostomns, Eigenmann & Eigenmann, 



Proc. U. S. Nat. Mus., XIV, 1891, 62. 



Habitat : Peruvian Amazon. 



10. STERNARCHORHAMPHUS MULLERI 



(Steindachner). 

 Sternarchiis [Rhamphosternarchus') mitlleri Steindachner, 



Flussf. Siidam., Ill, 15, pi. V, fig. 4, 1881, Para. 

 Sternarchorhynchus mitlleri, Eigenmann & Eigenmann, Proc. 



U. S. Nat. Mus., XIV, 1891, 62. 



Habitat: Para. 



II. STERNARCHORHAMPHUS TAMANDUA 



(Boulenger). 

 Ster?iarchus tamandua Boulenger, Trans. Zool. Soc, XIV, 



427, plate XLII, 1898, Rio Jurua, tributar}^ of the Amazon. 



Habitat : Rio Jurua. 



This species may represent a genus distinct from Stcr- 

 narchorhamphiis as here understood. 



5. Sternarchorhynchus Castelanu. (Figs. 9 and 10). 



StcrnarchorhyncJuis Castelnau, 1856. Type : Stcrnarcho- 

 rhyncJms inulleri Castelnau = oxyrhynchus. Gill, Proc. Ac. 

 Nat. Sci. Phila. 1864, 152. 



Rhamphosternarchus Giinther, Cat., VIII, 4, 1S70 {oxy- 

 rhynchus). 



Rhamfhosicrnarchus Giinther is synonymous with Sternarcho- 

 rhynchus Castelnau. It includes the species with a caudal 

 and long tubular snout and minute mouth. 

 Geographical distribution of the species : Marabitanos, 



Guiana and upper Amazon. 



a. Anal with more tlian 200 rays. 



h. Anal 210 to 226; mouth oblique; depth 1.6 to 1.75 in head. 



mormyrtis, 12. 



