294 FISHES OF WESTERN SOUTH AMERICA 
392. CURIMATA RUTILOIDES Kner 
Curimatus rutiloides Kner, 1859, Denksch. IKI<. Akad. Wiss. Wien, XVII, 141; 
Ginther, 1864, Cat. Fish. Brit. Mus., V, 290; 
Steindachner, 1882 (1883), Denksch. KIx. Akad. Wiss. Wien, XLVI, 11, Rio Huallaga, five 
specimens; 
Eigenmann and Eigenmann, 1889, Ann. N. Y. Acad. Sci., IV, 426; 
Eigenmann and Eigenmann, 1891, Proce. U.S. Nat. Mus., XIV, 47; 
EFigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 422. 
Rio Huallaga to the basin of the Paraguay 
Huimba-shitari is a colloquial name reported to Steindachner, with the ear- 
marks of improvisation, since the latter part of the name appears generally applied 
to certain Loricarinae. 
The smaller scales of the lateral line differentiate it from asper; mouth terminal. 
393. CURIMATA LEUCISCA Giinther 
Curimatus leuciscus Giinther, 1868, Proc. Zool. Soe. London, 239, two specimens, 53 inches, Rio 
Huallaga, Bartlett collection; 
Eigenmann and EKigenmann, 1889, Ann. N. Y. Acad. Sci., IV, 426; 
Eigenmann and Figenmann, 1891, Proc. U.S. Nat. Mus., XIV, 47; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 422. 
The Amazons 
15820, 1, 164 mm., Gosulimacocha, Rio Morona, Allen, October, 1920. 
15826, 1, 117 mm., Rio Huallaga, Yurimaguas, Allen, November, 1920. 
158338, 1, 85 mm., Rio Paranapura, Yurimaguas, Allen, November, 1920. 
15835, 3, 66-120 mm., Gosulimacocha, Rio Morona, Allen, October, 1920. 
15839, many, 60-125 mm., Gosulimacocha and Lago Sanango mixed, Allen, October-November, 
1920. 
17854, 1, 117 mm., Rio Ucayali, Orellana, Allen, August, 1920. 
17855, 3, 75-133 mm., Lago Cashiboya, Allen, August, 1920. 
15832, 1, 107 mm., Lago Sanango, Allen, November, 1920. 
15832 was determined by Eigenmann as C. bimaculatus, and 15833 as near 
bimaculatus. To me they are clearly the present species. 
At least locally known as the yavarachi or llavarachi. 
Belonging to the small-scaled division, having a scale count of 10 —60 to 69—%S. 
Back of uniform color, dorsal and median caudal rays unspotted, separating 
it from the remotely-distributed mivartii; elongate like spilura. 
Ventral profile straight, and dorsal contour arched, especially toward the 
forward end; preventral area flattened, postventral rounded; predorsal line keeled, 
postdorsal rounded; not depressed at the eye level; mouth inferior; eye diameter 
little exceeding the snout, 3.0-3.33 in the head, 1.5-1.6 in the interorbital. 
Scales serrate, somewhat deciduous; caudal not scaled; longest dorsal ray 
about equal to the head; anal short, emarginate, longest ray reaching caudal fin; 
ventrals reaching about to the vent, the pectorals not reaching the ventrals. 
Silvery below, light brown above; a blackish spot in front of the dorsal fin, a 
second behind the occipital process; a white lateral band. 
H. 4.0-4.25; depth 3.66-3.75; D. 12-13; A. 10-11. 
