CHAEACODON. 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 

 5 the length of head, extending beyond the base of ventral. Caudal truncate. Olivaceous; a series 

 of / to 10 dark brown spots or short vertical bars along the middle of the side. 



Hah. Mexico, Lake Chapala i 2. 



Here described from several specimens, measuring up to 75 mm. in total length. 



3. Characodon variatus. 



Characodon vnriatus, 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 & 4.^ 

 Characodon eiseiii, Butter, 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 3| to 3^. Snout as long as eye, the diameter of which 

 is 3i to 4 in the length of head ; interorbital width 2| in tha 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 | 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 irreo-ular 

 spots ; fins pale. 



Hab. Mexico, Eio Lerma System : 



Aguas Calientes ^ ; Tepic ^ ; Lagos ^ ; Guanajuato 1 ■* . 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. 



Characodun lateralis, Giinth. Cat. Fish. vi. p. 308 (1866) \ and Trans. Zool. Soc. vi. 1868, p. 480, 

 t. 82. fig. 2'; Garm. Mem. Mus. Comp. Zool. xix. 1895, p. 36'; Meek, Publ. Columbian 

 Mus., Zool. V. 1904, p. 121 '. 



Characodon garmani*, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1898, p. 2831 ' ; Meek, 1. c". 



Depth of body 2i to 3 in the length, length of head 3 to 83. Snout as long as or shorter than eye, the 

 diameter of which is 3^ to 4^ 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 prajoperculum or 

 operculum and end of caudal. Anal 13-16 ; origin a little in advance of that of the dorsal. Pectoral '4- 

 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 Characodon qarmam 

 for the specimens from Parras, Coahuila, described by Garman (Mem. Mus. Comp. Zool. xix. 1805, p. 36) 

 under the name Characodon lateralis. Carman'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 bj- 

 Dr. Meek at Durango and sent as C. garmani are identical with C. lateralis. 



BIOL. CENTR.-AMER., Pisces, Jull/ 1907. N 



