CHARACINIDAE FROM VENEZUELA—SCHULTZ 265 
?Prochilodus brama (not of Cuvier and Valenciennes) Pretmrs, Montasb. Akad. 
Wiss. Berlin, 1877, p. 472 (Calabozo, Venezuela).—H1GENMANN and HicEn- 
MANN, Proc. U. 8S. Nat. Mus., vol. 14, p. 48, 1891 (Calabozo). 
?Prochilodus knert PELLEGRIN, Bull. Mus. Hist. Nat. Paris, vol. 15, p. 155, 1909 
(Orinoco) [new name for P. insignis of Kner and of Gunther, not 
Schomburgk]. 
Genus CHILODUS Miller and Troschel 
Chilodus MULLER and TROScHEL, Horae ichthyologicae, pts. 1, 2, p. 10, pl. 4, fig. 2, 
2a, 1845 (Lake Amucu, Guiana). (Type, Chilodus punctatus Miller and 
Troschel.) 
Microdus Kner, Sitzb. Akad. Wiss. Wien, vol. 30, p. 77, 1858; Denkschr. Akad. 
Wiss. Wien, vol. 17, p. 149, pl. 3, fig. 5, 1859. (Type, Microdus labyrinthicus 
Kner.) 
Caenotropus GtnrHER, Catalogue of the fishes in the British Museum, vol. 5, 
p. 297, 1864 (substitute name for Chilodus and Muicrodus said to be pre- 
occupied.) 
CHILODUS LABYRINTHICUS (Kner) 
Microdus labyrinthicus Kner, Denkschr. Akad. Wiss. Wien, vol. 17, p. 149, pl. 3, 
fig. 5, 1859 (Rio Branco and Barra do Rio Negro.) 
Caenotropus labyrinthicus STHINDACHNER, Denkschr. Akad. Wiss. Wien, vol. 41, 
p. 1538, 1879 (Ciudad Bolivar, Venezuela.) 
Chilodus labyrinthicus EIGENMANN and EIGENMANN, Proc. U.S. Nat. Mus., vol. 14, 
p. 49, 1891 (Orinoco.) 
This species has a pale streak along midaxis of body and only ii, 7 
anal rays. Chilodus punctatus has 1,10 anal rays and a black lateral 
streak. 
Genus LEPORELLUS Liitken 
Leporellus LttKmn, Overs. Danske Vid. Selsk. Forh., 1874, pp. 129, 141. (Type, 
Leporinus pictus Kner=Leporellus pictus Liitken [1875, on Rio das Velhas 
specimen|= Leporinus maculifrons Reinhardt, in Litken=Leporellus timbore 
EKigenmann.) 
Leporinodus E1gENMANN, Mem. Carnegie Mus., vol. 9, No. 1, p. 116, 1922. 
(Type, Leporinodus retropinnis Higenmann, on Rio Piracicaba specimen.) 
There is considerable confusion concerning the specific identity 
of the species referred to this genus, largely because it is so scarce in 
museum collections that no investigator has been able to examine all 
the species at one time. In addition, the descriptions are not ade- 
quate. Ihave attempted to clarify in this discussion certain necessary 
nomenclatorial changes, as a result of Eigenmann’s proposal of the 
genus Leporinodus and his overlooking of the available name for his 
Leporellus timbore. 
The following tentative key was prepared mosily from the figures 
and descriptions of the species referred to this genus as noted in the 
literature. The genus needs careful revision. 
la. Origin of dorsal about equidistant between tip of snout and base of caudal 
fin; ® head spotted above and on sides; predorsal scales with a dark spot at 
8 It is assumed that EFigenmann (1922, p. 116) meant base of caudal in his statement, ‘‘Origin of dorsal 
about equidistant from snout and caudal. . .” 
