THE CYPRINODONTS. 79 
frontal shield around the orbit is less regularly curved, more angulate for- 
' ward, the posterior margin of the caudal is more oblique, the scales are more 
harsh to the touch, and the colors are more nearly uniform than in either of 
the others. The caudal has a pointed appearance, the longest rays being 
below the middle. Because of the greater height of the orbital shield the 
eye does not look upward so directly as in A. Dowii, The snout is hardly 
so near truncate as that of A. anableps. A greater roughness of the scales 
is due in part to the striation and also to the greater firmness of the small 
spines around the free edges of the scales. 
A male of four and one eighth inches has two narrow longitudinal bands 
of brownish, separated by yellowish, along each flank; above these on the 
caudal section there is another fainter streak. Eight inch females have 
two faintly indicated yellowish bands with series of small brownish spots 
or vitte#, more numerous posteriorly. Others of six to twelve inches are 
nearly to quite uniform greyish brown on the back and yellowish beneath, 
which are the ground colors in all cases. 
Representatives from Para to Surinam. 
Anableps Dowii. 
Anableps Dowei Gill, 1861, P. Phil. Ac., 4, — Eig., 1893, P. U. S. Mus., XVI, 57. 4. Dowi J. & G., 
1883, P. U. S. Mus., V, 373. 
Anableps Dovti Gthr., 1866, Cat., VI, 338; Jor., 1886, P. U. S. Mus., VIII, 368. 
B. 6; D. 10; A. 11; V. 6; P. 23; Li. 64-70; Ltr. 14-15; Vert. 
24 + 23. 
Head four and one fourth to four and two thirds times in the length to 
the caudal, or four and two thirds to five and one third times in the total. 
Interorbital space wider and flatter, orbital shield more regular, scales larger 
and smoother, and caudal more regular in outline than in A. microlepis. 
Color darker, bands fewer, and orbital shield lower than in either microlepis 
or anableps. With a lower orbital shield the eye is enabled to look both 
more directly sidewise and more directly upward than in those species. 
In the upper half of the entire body the color is a rich dark brown; 
below this there is a yellow band along the flank separated from the yellow 
of the ventral surface by a brown band, from which little branches extend 
upward across the yellow band toward the brown of the back. Dorsal and 
caudal, with its base, brown. Pectorals brown in upper half, yellow in 
lower. Cheeks brownish yellow; throat whitish. Specimens from Chiapas, 
