Fishes of the Characinid Genus Distichodus. 51L 
A. 19-21; Sq. 37- 39.4 io) / scales between 
imtoo line and ventral; caudal lobes 
TROEUDCLEC! “eee Bias ier Cee aeRO eee 
A. 21-22; Sq. 40-42°- a 9 scales between 
infaral line and ventral; caudal lobes 
HESPEAL TUM ks ayolsc ot) Aw diy wo Bias 
2. D. 20, separated from the adipose 
by a Bice equal to 3 its base. 
A. 16; Sq. 45 3 8 scales fetveen lateral 
JS GIG) IGT ga Ae a 
B. Snout a little compressed ; D. 18-19, 
separated from the adipose by a 
space equal to ys base. 
A. 12-18 ; Sq. 53-57 7 — ; 6scales between 
Jateral line and ventral ............. : 
II. Sq. 60-110 2 
13-25° 
A. Snout deeper than long, broad or 
feebly compressed. 
1. Sq, 60-78 57. 
a. D. 19, separated from the adipose 
by a space nearly equal to its 
base. 
9-10 
A. 11; Sq. 70-75 7545; 7 or 8 scales between 
thter dblinevand ventraly 0055. ..348.. 
b. D. 22-27, separated from the adi- 
pose by a space much shorter 
than its base. 
a. Interorbital width nearly twice 
length ie snout. 
1D, D> SIG Bast Gi ee ee 
8. Interorbital width not more 
than 13 length of snout. 
10-12 
D, 22-25; A. 18-15; Sq. 60-6654 ...... 
D, 29-94; A. 18-16; Sq. 68-77 os 2... 
D. 25-27; A. 14-16; Sq. 68-78 53; inter- 
Pica width not greater than length 
GigsHOUb! ema a Sere ene de A 
D, 26-27; A. 14-16; Sq. 67-69 T=; inter- 
orbital width 14 length of snout 
15-20 
2, Sq. 80-110 222. 
17-20 
D. 20-21; A. 13-15; Sq. 80-90 prose aoe 
D. 23-25; A. 14-16; Sq. 85-98 8 
D. 23-26 ; A. 13-15; Sq. 95-110 1520 rae 
B. Snout desner than long, strongly 
compressed. 
D. 23-24; A. 13; Sq, 80-8275 1.0... 
2. 
D. affinis, Gthr, 
. D. altus, Bigr. 
. D. noboli, Blgr. 
. D. hypostomatus, 
[ Pellegr. 
. D. maculatus, Bler. 
. D. Petersit, Pfetf. 
. D. Antonit, Schilth. 
. D. atroventralis, Bigr. 
. D. fasciolatus, Blgr. 
. D. mossambicus, Ptrs. 
. D. brevipinnis, Gthr. 
. D. rostratus, Gthr. 
. D. niloticus, L. 
. D. engycephalus, Gthr. 
