296 FISHES OF WESTERN SOUTH AMERICA 
D. 11; length of dorsal 3.8—4.7 in the length of the fish; A. 9; eye greater than 
snout by half the width of the iris, 3 in the head, 1.6 in the interorbital width; depth 
in length 2.8-3.3. All fins small, ventrals in length 4.8, moderate, not reaching to 
the anus by a considerable space; pectorals still shorter, 6.7 in the length and far 
short of reaching the ventrals; dorsal origin slightly nearer the tip of the snout than 
to that of the adipose, its tip separated by four scale rows from the adipose fin, which 
is considerably elevated; the anal reaching the caudal origin; the caudal moderately 
forked, with a few diminishing series of scales on the base. 
Cypriniform; dorsal contour strongly arched from the nape to the extremity 
of the dorsal basis; wide and flat on the top of the head and first series of predorsal 
scales; preventral contour more regular, but somewhat arched both ways}in the 
preventral region; only moderately compressed; lateral keels of preventral area 
rounded. 
Mouth distinctly inferior, nearly equals the interorbital space; scales increasing 
in size ventrally, but only moderately; crenulations moderate and inconspicuous. 
A slightly pigmented epidermis about the margin of each scale, each of which is 
darker than its border, forms a lighter network with a lace-like, regular pattern on 
the dorsal half of the sides. Iridescent, bluish silver ground color, becoming golden 
or brassy on the opercle and ins. 
The name alludes to the ight network about the upper scales of the sides. 
397. CuURIMATA HypostomMaA Boulenger 
Curimatus hypostomus Boulenger, 1887, Ann. Mag. Nat. Hist., NIX, 172, Rio Ucayali; 
Eigenmann and Eigenmann, 1889, Ann. N. Y. Acad. Sci., [V, 426; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 422. 
Peruvian Amazonia 
15825, 13, 99-107 mm., Rio Huallaga, Yurimaguas, Allen, November, 1920. 
15827, 10, 67-84 mm., Rio Huallaga, Yurimaguas, Allen, November, 1920. 
15829, 1, 105 mm., Rio Morona, Allen, October, 1920. 
17858, 13, 58-103 mm., Rio Paranapura, Yurimaguas, Allen, November, 1920. 
The apparently juvenile specimens under number 15827 are separableVfrom 
15825 from the same source by several characters: 
15825 15827 
Lateral fae ele Bi ae Pe en, He 50-54 16. -48 i 
Mouth me ey a ‘ S Fs i: : . ve abe Dee. ; More toe Less oP - 
oh eee. eh ee Vike 
Vientrelaa ee ot. ; : mel me ¥ ; ie : ie | NGS : Rone Bue 
With respect to other characters these specimens are hypostoma. 
Curimata hypostoma should be the ideal baitfish in several ways: with its 
perfection of minnow form, its brilliant silver iridescence, and its broad snout for 
