THE CATFISHES OF VENEZUELA — SCHULTZ 239 



Named peloichthys in reference to its living in very muddy bottoms 

 with much vegetable debris. 



TKACHYCORYSTES GALEATUS (LinnaeuB) 



Silurus galeatus Linnaeus, Systema naturae, ed. 12, vol. 1, p. 503, 1766 (based on 



Seba, Locupletissimi rerum naturalium thesauri . . ., vol. 3, pi. 29, fig, 7, 



1761). (Ref. copied.) 

 Auchenipterus galeatus Peters, Monatsb. Akad. Wiss. Berlin, 1877, p. 470 



(Calabozo, Venezuela). 

 Auchenipterus maculosus Pellegrin, Bull. Mus. Hist. Nat. Paris, vol. 5, p. 158, 



1899 (Apure River, Venezuela), 

 Tr achy cor ystes galeatus Eigenmann and Allen, Fishes of western South America, 



p. 119, pi. 5, fig. 1, 1942 (Orinoco). 



Genus PSEUDAUCHENIPTERUS Bleeker 



Pseudauchenipierus Bleeker, Nederi. Tijdschr, Dierk., vol. 1, p. 88, 1863, 

 (Type, Silurus nodosus Bloch.) 



PSEUDAUCHENIPTERUS NODOSUS (Bloch) 



Silurus nodosus Bloch, Naturgeschichte der auslandischen Fische, vol. 8, p. 35, 



pi. 368, 1794. 

 Pseudauchenipierus guppyi Fowler, Proc. Acad. Nat. Sci. Philadelphia, vol. 63, 



p. 433, 1911 (Pedernales, Venezuela). 

 Pseudauchenipierus nigrolineatus Fowler, ibid., p. 434, fig. 5 (Pedernales, 



Venezuela) . 



P. guppyi Regan, and P. nodosus as figured by Eigenmann (Mem, 

 Carnegie Mus., vol. 5, pi. 20, fig. 2, 1912), are the same species as 

 described by Fowler as P. nigrolineatus {op. cit., fig. 5), Although 

 guppyi and nigrolineatus are the same species, it is possible that 

 they differ from nodosus, but they cannot be separated until a large 

 series of color variations is studied. 



Genus ENTOMOCORUS Eigenmann 



Entomocorus Eigenmann, Ann. Carnegie Mus., vol. 11, p. 403, 1917. (Type, 

 Entomocorus benjamini Eigenmann.) 



ENTOMOCORUS BENJAMINI Eigenmann 



Entomocorus benjamini Eigenmann. Ann. Carnegie Mus., vol. 11, p. 403, fig. 3, 

 pi. 41, 1917 (San Joaquin; Rfo Santa Rita). — Myers, Stanford Ichth. 

 Bull., vol. 2, No. 4, p. 97, 1942 (Laguna El Guacimo, 3 km. we.st of San 

 Fernando de Apure, Venezuela). 



Genus CENTROMOCHLUS Kner 



Centromochlus Kner, Sitzb. Akad. Wiss. Wien, vol. 26, p. 430, 1858, (Type, 

 Centromochlus megalops Kner.) (Ref. copied.) 



KEY TO THE SPECIES OF CENTROMOCHLUS REPORl'ED FROM VENEZUELA 



lo. Insertion of pelvic fins closer to tip of snout than to midcaudal base; anal 

 rays 9 or 10; chocolate-brown above, pale below, sides and caudal with 

 oval light spots Centromochlus aulopygius Kner 



lb. Insertion of pelvic fins closer to midcaudal base than to snout tip; anal 

 rays 7; no oval light spots Centromochlus heckelii (Fihppi) 



