150 MEMOIRS OF THE CARNEGIE MUSEUM. 
Acad. Sei., VII, 1905, 163 (Amazons); von InmRING, Os Peixes do Brazil, 
Part 1 A, 1907; Ergenmann, Repts. Princeton Univ. Exp. Patagonia, III, 
1910, 448 (Amazons). 
Sternarchus macrolepis STEINDACHNER, Flussf. Siidam., IIT, 14, pl. V, fig. 7, 1881, 
near Barra do Rio Negro and Lake Manacapuru; E1GENMANN AND EIGEN- 
MANN, Proc. U. 8. Nat. Mus., XIV, 1891, 62; BouLEencsEr, Trans. Zodl. Soc., 
XIV, 427, 1898 (Rio Jurua); E1GENMANN AND Warp, Proc. Wash. Acad. 
Sci., VII, 1905, 163 (Amazon near Rio Negro and Jurua); von IHprRtNna, Os 
Peixes do Brazil, Part 1 A, 1907; Ertaenmann, Repts. Princeton Univ. Exp. 
Patagonia, III, 1910, 448 (Amazon, Rio Negro, Guiana). 
3194 C. M., one, 95mm. Rio Mamoré, Sept. 19, 1909, Haseman. 
3195 C. M., one, 160 mm. (estimated, caudal portion gone and partly regen- 
erated). Santarem, Dec. 15, 1909, Haseman. 
Fic. 13. Sternarchus bonapartii Castelnau. 
Head 5.75 to 6, greatest depth of the body 8.75 to 9 in the length to the base 
of the caudal; anal rays 163; a maximum of 8 rows of scales above the lateral line. 
Snout 2.5 to 2.75, interorbital 4.25 to 4.7 in the head, eye 4 to 4.5 in the snout; 
about 2 in the interorbital, and 11 or 12 in the head. 
Body and head compressed, depth of head in the occipital region about 1.3, 
width of the head a little more or less than 2 in the greatest depth*of the body; 
anus a very little behind the vertical from the posterior margin of the eye; dorsal 
profile of the head weakly convex; dorsal part of the body sloping very slightly, 
ventral profile almost straight. 
A comparison of Sternarchus bonapartii and Sternarchus macrolepis Steindach- 
ner with the above specimens shows macrolepis to be synonomous with bonapartii. 
Distribution: Lower and Middle Amazons and Rio Uecayale. 
XIII. SrernarcHetita Kigenmann and Ward. 
Sternarchella KIGENMANN AND Warp, Proc. Wash. Acad. Sci., Vol. VII, 1905, 163. 
Type, Sternarchus schotti Steindachner. 
Like Sternarchus, the gape short; size rather small to medium; body rather 
compressed; gape not reaching beyond the posterior nostril; eyes small, covered 
