CHARACODON. 89 
33 to 36 scales in a longitudinal series. Dorsal 15-18 ; origin equidistant from tip of snout and base of 
caudal or a little nearer the latter. Anal 15-17; origin below the middle of dorsal. Pectoral nearly 
2 the length of head, extending beyond the base of ventral. Caudal truncate. Olivaceous; a series 
of 7 to 10 dark brown spots or short vertical bars along the middle of the side. 
Hab. Mexico, Lake Chapala?! 2. 
Here described from several specimens, measuring up to 75 mm. in total length. 
3. Characodon variatus. 
Characodon variatus, Bean, Proc. U.S. Nat. Mus. 1887, p. 370, t. 20. fig. 1'; Jord. & Everm. Bull. 
U.S. Nat. Mus. xlvii. 1896, p. 669°; Meek, Publ. Columbian Mus., Zool. v. 1904, p. 120°. 
Characodon ferrugineus, Bean, t. c. p. 372, t. 20. figs. 3 & 44, 
Characodon eiseni, Rutter, Proc. Calif. Ac. Sci. (2) vi. 1896, p. 266’; Jord. & Everm. t. c. 1898, 
p. 2831°; Meek, t. c. p. 119”. | 
Depth of body about 3 in the length, length of head 33 to 33. Snout as long as eye, the diameter of which 
is 34 to 4 in the length of head ; interorbital width 24 in the length of head. 32 to #5 scales in a 
longitudinal series. Dorsal 12-14; origin equidistant from tip of snout and end of caudal fin. Anal 
14-17; origin behind that of the dorsal. Pectoral 2 to ? the length of head. Caudal subtruncate. 
Males with a blackish longitudinal band; dorsal and caudal fins blackish, with a narrow light edge. 
Females with the lateral band broken up into a series of spots or bars; body with numerous irregular 
spots; fins pale. 
Hab. Mexico, Rio Lerma System : 
Aguas Calientes*?; Tepic®; Lagos ®; Guanajuato!*; Ocotlan?; Celaya?; 
Salamanca? ; Huingo °. 
Here described from a number of specimens, measuring up to 75 mm. in total 
length, from Aguas Calientes (Jordan, Meek) and Salamanca (Woolman). 
4, Characodon lateralis. | 
Characoden lateralis, Giinth. Cat. Fish. vi. p. 308 (1866) ‘,and Trans. Zool. Soc. vi. 1868, p. 480, 
t. 82. fig. 27; Garm. Mem. Mus. Comp. Zool. xix. 1895, p. 86°; Meek, Publ. Columbian 
Mus., Zool. v. 1904, p. 121°. 
Characodon garmani*, Jord. & Everm. Bull. U.S. Nat. Mas. xlvii. 1898, p. 2831°; Meek, 1. c.°. 
Depth of body 23 to 3 in the length, length of head 3 to 33. Snout as long as or shorter than eye, the 
diameter of which is 34 to 44 in the length of head ; interorbital width 2 to 2} in the length of head. 
32 to 35 scales in a longitudinal series. Dorsal 11-14; origin equidistant from preoperculum or 
operculum and end of caudal. Anal 13-16; origin a little in advance of that of the dorsal. Pectoral # 
the length of head. Caudal rounded or subtruncate. Males dark brownish, with a more or less 
distinct blackish lateral band ; vertical fins each with a blackish intramarginal band. Females olivaceous, 
with the dark lateral band more or less broken up into spots or bars. 
* Jordan & Evermann (Bull. U.S. Nat. Mus. xlvii. 1898, p. 2831) proposed the name Oharacodon garmant 
for the specimens from Parras, Coahuila, described by Garman (Mem. Mus. Comp. Zool. xix. 1895, p. 36) 
under the name Characodon lateralis. Garman’s description appears about equally applicable to C. lateralis 
and C. variatus, species which he does not recognize as distinct from each other. Specimens collected by 
Dr. Meek at Durango and sent as C. garmant are identical with C. lateralis. 
BIOL. CENTR.-AMER., Pisces, Judy 1907. N 
