274 PROCEEDINGS OF THE NATIONAL MUSEUM vol.94 



tinue to base of caudal fin rays, each scute posteriorly with a single 

 backward-directed sharp spine; the first two plates at the anterior 

 end of the series are each connected with the epiotic by a bony stay 

 just under the skin; skin somewhat thick and a little leathery. 



Color. — Blackish above and white to pale grayish below; in some 

 specimens the belly is mottled with grayish and in others almost 

 blackish; dorsal and pectoral fins blackish with a wide, pale border 

 distally; adipose blackish; caudal fin blackish, on one specimen gi'ay- 

 ish with some scattered blackish spots; distally the caudal fin is pale 

 in color; pelvics and anal grayish to blackish; maxillary barbels 

 blackish, mental barbels grayish; peritoneum white. 



Remarks. — This new species can be distinguished from all other 

 genera and species referred to the family Doradidae by the absence 

 of lateral scutes anteriorly, these begmning over region of anus and 

 continuing to base of caudal fin. 



Named zuloagai for Dr. Guillermo Zuloaga, assistant chief of ex- 

 ploration. Standard Oil Co. of Venezuela, who was largely responsible 

 for inviting me to study the fishes of the Maracaibo Basin. In his 

 honor I take much pleasure m naming this species. 



Genus ORINOCODORAS Myers 



Orinocodoras Myers, Bull. Miis. Comp. Zool., vol. 6S, No. 3, p. 124, 1927. (Type, 

 Orinocodoras eigenmanni Myers.) 



ORINOCODORAS EIGENMANNI Myers 



Orinocodoras eigenmanni Myers, Bull. Mus. Comp. Zool., vol. 68, No. 3, p. 124, 

 1927 (Cano de Quiribana, near Caicara, Venezuela). 



Genus AGAMYXIS Cope 



Agamyxis Cope, Proc. Ainer. Philos. Soc, vol. 17, p. 322, 1878. (Type, Agamyxis 

 pectinifrons Cope.) 



AGAMYXIS ALBOMACIILATUS (Peters) 



Doras alhomaculalus Peters, Monatsb. Akad. Wiss. Berlin, 1877, p. 470 (Cala- 

 bozo, Venezuela). — Eigenmann and Eigenmann, Proc. California Acad. Sci., 

 ser. 2, vol. I, p. 161, 1888; Occ. Papers California Acad. Sci., vol. 1, p. 231, 

 1890 (Calabozo, Venezuela). 



Platydoras albomandatus Eigenmann, Trans. Amer. Philos. Soc, vol. 22, pt. 5, 

 p. 317, 1925 (Calabozo). 



Agamyxis albomaculatus Myers, Stanford Ichth. Bull., vol. 2, No. 4, p. 97, 1942 

 (Cano de Quiribana, Caicara, Rfo Orinoco, Venezuela). 



Genus PSEUDODORAS Bleeker 



Pseudodoras Bleeker, Ichthyologiae Archipelagi Indici Prodromus, vol. 1, p. 53, 

 1858. (Type, Doras niger Valenciennes.) 



PSEUDODORAS NIGER (Valenciennes) 



Doras niger Valenciennes, in Humboldt, Recueil d'observations de zoologie . . . ; 

 vol. 2, p. 184, 1811. 



