THE CATFISHES OF VENEZUELA — SCHULTZ 227 



Table 7. — Fin-ray counts in specimens of Nannorhamdia nemacheir 



NANNORHAMDIA NEMACHEIR Eigenmann and Fisher 



Nannorhamdia nemacheir Eigenmann and Fisher, in Eigenmann, Ann. Carnegie 

 Mus., vol. 10, p. 83, 1916 (Girardot, Colombia). 



The following specimens of this catfish were collected in the Mara- 

 caibo Basin, Venezuela, by Leonard P. Schultz during 1942: 



U.S.N. M. No. 121171, Rfo Machango, 20 km. above the bridge south of 

 Lagunillas, March 21, 15 specimens, 36 to 53.5 mm. 



U.S.N.M. No. 121166, Rio Machango, at bridge south of Lagunillas, March 

 16, 112 specimens, 24 to 45 mm. 



U.S.N.M. No. 121163, Rfo Motatan, at bridge 22 km. north of Motatdn, 

 March 17, 43 specimens, 32.5 to 63.8 mm. 



U.S.N.M. No. 121160, Rfo Motatdn, 4 km. above Motatdn, March 25, 12 

 specimens, 49.5 to 74 mm. 



U.S.N.M. No. 121169, Rfo Jimelles, 12 km. east of Motatdn, Motatdn system, 

 March 24, 3 specimens, 54 to 64 mm. 



U.S.N.M. No. 121167, Rfo San Juan, at and above bridge south of Mene Grande, 

 Motatdn system, March 17 and 20, 33 specimens, 32.5 to 69 mm. 



U.S.N.M. No. 121164, Rfo Motatdn, 8 km. below Motatc4n, March 24, 13 

 specimens, 35 to 64.5 mm. 



U.S.N.M. No. 121170, Rfo San Pedro, at bridge south of Mene Grande, 

 Motatiln system, March 20, 12 specimens, 37 to 61.7 mm. 



U.S.N.M. No. 121161, Rfo Apon, about 35 km. south of Rosario, February 26, 

 8 specimens, 38 to 48.5 mm. 



U.S.N.M. No. 121165, Rfo Palmar, at bridge 70 km. southwest of Maracaibo^ 

 March 6, 3 specimens, 50.5 to 55 mm. 



U.S.N.M. No. 121162, Rfo Palmar near Totuma, about 100 km. southwest of 

 Maracaibo, February 21, 118 specimens, 36.5 to 72.5 mm. 



U.S.N.M. No. 121168, Rfo San Juan, 12 km. south of Rosario, Estado de Zuha, 

 February 26, 10 specimens, 28.5 to 39 mm. 



The specimens listed above do not agree exactly with Eigemnann's 

 descriptions of N. nemacheir, but since none are available for direct 

 comparison from the Rio Magdalena, I hesitate to name the Mara- 

 caibo specimens as a new subspecies. 



SORUBIMINAE, new subfamily 



The pimelodid catfishes herein grouped under the subfamily Sorubi- 

 minae have certain characters in common, as follows: Broad heads 

 much depressed anteriorly, with patches or bands of villiform teeth in 

 the roof of the mouth on vomer or on palatines or on both, and with 



