296 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
Catalogue of the fishes in the British Museum, vol. 5, p. 348, 1864; 
Anacyrtus (Cynopotamus) knerw Steindachner, Denkschr. Akad. Wiss. 
Wien, vol. 39, p. 65, 1878 (Cujaba; Rio Paraguay; Irisanga) ; Cynopo- 
tamus gulo Cope, Proc. Amer. Philos. Soc., vol. 11, p. 565, 1870 (Pebas), 
referred to as Hucynopstamus gulo (Cope) by Pearson, Proc. California 
Acad. Nat. Sci., vol. 23, No. 7, p. 92, 1987 (Tingo de Pauca and 
Pusoc, above Balsas, Rio Marafién, Peru). 
Ginther, in describing Roestes on page 345, says, ““A. Mandibulary 
teeth in a single series’”’ but on p. 347 says, ‘‘teeth of the mandible in a 
double series.”” Kner’s description of C. molossus definitely says teeth 
are in a double series on the mandible but only an outer series is 
visible in his figure 16a. Of course, the inner series could be behind 
the outer series and thus not be shown. ‘The type should be re- 
examined. 
CYNOPOTAMUS HUMERALIS Valenciennes 
Cynopotamus humeralis VALENCIENNES, in Cuvier and Valenciennes, Histoire 
naturelle des poissons, vol. 22, p..320, 1849 (Buenos Aires). 
Anacyrtus humeralis PELLEGRIN, Bull. Mus. Hist. Nat. Paris, vol. 5, p. 157, 1899 
(Apure River, Venezuela). 
Pellegrin’s record for the Rio Apure is somewhat out of the pre- 
viously recorded range of this species, and it should be restudied to 
determine with more certainty if another species is involved. 
Genus CYRTOCHARAX Fowler 
Cyrtocharaz Fowu3ER, Proc. Acad. Nat. Sci. Philadelphia, vol. 58, p. 454, 1906. 
(Type, Anacyrtus limaesquamis Cope.) 
Unfortunately, there has been much confusion in regard to the 
genera related to Cyrtocharax, mostly because Eigenmann failed to 
recognize it and Hucynopotamus soon after they were named. LEigen- 
mann (Amer. Nat., vol. 41, p. 770, 1907) states that “‘Oyrtocharaz is 
synonymous with Cynopotamus, a subgenus of Charaz. The type of 
Cynopotamus lacks a second row of teeth in the lower jaw.” Again 
(Mem. Carnegie Mus., vol. 5, p. 403, 1912) he says, ‘“‘I have examined 
the type of Cynopotamus argenteus (22 mm. long, Buenos Aires) in the 
Jardinédes Plantes. I was unable to find an inner series of teeth in 
the lower jaw.”’ That EKigenmann did not examine the genotype of 
OCynopotamus, which is Hydrocyon argenteus Valenciennes, seems 
quite certain because Valenciennes (Histoire naturelle des poissons, 
vol. 22, pp. 318-319, 1849) states definitely that the type of this 
genus is 8% inches long and that on the lower jaw there is on the 
inside of the outer row a series of very small conical teeth. On the 
basis of our evidence, it is concluded that Cyrtocharaz is not a synonym 
of Cynopotamus, but a distinct genus. 
