CHARACINIDAE FROM VENEZUELA—SCHULTZ 263 
21.0; length of longest pectoral ray 20.9 and 22.2; length of longest 
pelvic ray 18.6 and 23.8; length of longest caudal fin ray 28.8 and 
33.2; length of shortest caudal fin ray 10.7 and 14.2. 
The following counts were made, respectively: Dorsal fin rays 
ii, 9 and ii, 9; anal in, 8 and ui, 8; pectoral i, 15-i, 15 andi, 14-1, 14; pelvic 
i, 8-1, 8 and i, 8-1, 8; branched caudal fin rays 9+-8=17 and 9+-8=17; 
number of scale rows crossing lateral line from upper end of gill open- 
ing to base of midcaudal fin rays 43 and 43; scales from dorsal origin 
to lateral line 9 and 8; scales from anal origin to lateral line upward 
and a little forward 7 and 6; scale rows before dorsal fin 16 and 14; 
scale rows from dorsal base to adipose origin 13 and 13; scales around 
caudal peduncle in a zigzag row 18 and 18. For additional counts 
see table 7. 
TABLE 7.—Counts made on subspecies of Prochilodus reticulatus 
Number of fin rays Number of scales 
Above | Below 
. Pel- Rows crossing 
Subspecies | Dorsal Anal =e Pectoral interaiine rete teeta 
ii, 9 ii, 10 |iii, 7/141, 8|iii, 9] i, 8 |i, 1314, 14'i, 15|i, 16/1, 17| 42 43| 44 45| 46 GN PN BN ON GLY 
——S | | | | | | |  — | | | | S|) ) ES | ee SS eS 
magdalenae___| 7 DH PARA aS es seetineal TES Ry MNT eS age Ry (eae | a 1j11)2/1/]---13)4;,3] 4 
reticulatus.-.-| 12 |_----|---- ALD | lane | aT es sai | LAL FN fh ee eee I | RCo Pest |e eon a) VB Ep ae 
ASPET Nes as ile Dh yp a AAP rei Uy Veta Hi) i 
melt pares | sen eee | ere 
vale | 
Body compressed, head rounded, profile a little concave at occiput; 
mouth somewhat protrusible, but premaxillary not strictly protractile, 
mouth more or less disklike; lips with very numerous small, incisor- 
like teeth; inside of the outer series of teeth near middle of mouth on 
upper and lower surfaces of mouth another short series of small in- 
cisorlike teeth arranged in a curve, the two curved series meeting 
posteriorly, this lower series on each side numbering about 10 or 11 
and the upper about 18; nasal openings together, the pair not separ- 
ated by the skin of the head; lower lip with wide frenum; caudal and 
all other fins without scales except at their bases; gill membranes 
joined to the isthmus with a narrow free fold; scales rough or ctenoid, 
more so anteriorly; a low keel from pelvic bases to anus along mid- 
ventral line; belly rounded to pelvic insertion; lateral line complete; 
pelvics fiend under fifth to sixth bernie dorsal fin rays; anal 
origin a little in advance of adipose origin; margin of dorsal rounded, 
the first or second branched dorsal ray longest; anal margin concave, 
the first branched ray longest and when fin is depressed the first rays 
of anal extending a little past the last rays; posterior margin of paired 
fins truncate, then rounded; caudal fin deeply forked, upper lobe a 
