THE CATFISHES OF VENTEZUELA — SCHULTZ 305 



always live; triradiatus averages about one less plate in the lower 

 lateral series than does martini. The pale color spots on triradiatus 

 are round and less distinct, but on martini they are elongate and espe- 

 cially distinct on the ventral surfaces anteriorly. 



Named martini after Bethea Martin, of the Lago Petroleum Corpo- 

 ration, who aided me in the collection of fishes in Venezuela. 



ANCISTRUS GYMNORHYNCHUS Kner 



Ancistriis gymiiorhynchus Kner, Denkschr. Akad. Wiss. Wicii, vol. 7, p. 275, 1854 



(Puerto Cabello, Venezuela). — GtjNTHER, Catalogue of the fishes in the 



British Museum, vol. 5, p. 249, 1864 (Puerto Cabello). 

 Xenocara rothschildi Regan, Nov. Zool., vol. 12, p. 242, 1905 (San Esteban, near 



Puerto Cabello, Venezuela). 

 tChaelostomus gymnorhynchus Lijtkbn (not of Kner), Vid. Medd. Naturh. Foren. 



Kj0benhavn, pts. 12-16, p. 204, 1874 (Puerto Cabello, Venezuela). 



ANCISTRUS BSEVIFIUS BREVIFILIS Eigenmann 



Ancistrus brevifilis Eigenmann, Indiana Univ. Studies, vol. 7, No. 44, p. 7, fig. 2, 

 pi. 1, 1920 (El Concejo, Rio Tiguirito, Venezuela). 



ANCISTRUS BREVIFIUS BODENHAMEET. new subspecies 



Plate 10, A 



Holotype.—\]S.'^M. No. 121066, a male 61.2 nmi. in standard 

 length, taken March 20, 1942, by Leonard P. Schultz in the Rio San 

 Pedro at the bridge south of Mene Grande, Motatan system. 



Parotypes (all collected by L. P. Schultz).— U.S.N. M. No. 121067, 

 132 specimens, 22.5 to 65. mm. in standard length, collected along 

 with the holotype and bearing the same data; U.S.N.M. No. 121068, 1 

 specimen, 25.6 mm., taken February 26, 1942, in the Rio San Juan 

 about 12 ion. south of Rospjio in Maracaibo Basin; U.S.N.M. No. 

 121069, 2 specimens, 28 and 54.4 mm., taken March 16, 1942, in 

 the Rio Machango at the bridge south of Lagunillas, Estado de Zuiia; 

 U.S.N.M. No. 121299, a specunen 26.8 mm., taken February 26, 1942, 

 in the Rio San Juan 12 km. south of Rosario, western side of Maracaibo 

 Basin. 



Description. — 'Based on the holotype and paratypes. Measure- 

 ments, expressed in hundredths of the standard lengtli, are recorded 

 for the holotype followed by those for tliree paratypes in parentheses. 

 Standard length (in mm.) 61.2 (61.5; 50.2; 54.4) ; total length (in mm.) 

 81.6 (81.7; 69.1; 75.5); sex cT (cf ; 9; 9). 



Length of head from tip of snout to rear edge of temporal plate 

 36.8 (40.6; 37.1 ; 36.6) ; length of head to posterior tip of supraoccipital 

 plate 36.1 (39.7; 35.7; 35.3); width of head at base of pectorals 32.7 

 (32.0; 33.1; 32.6); postorbital length of head 10.6 (9.92; 9.77; 10.3); 

 greatest depth of body 17.0 (18.7; 20.9; 19.3); length of snout 22.6 

 (23.7; 21.9; 20.6) ; distance from eye to middorsal tip of bony area of 

 snout 12.6 (13.3; 18.9; 19.1); diameter of eye (fleshy) 5.23 (5.20; 5.98; 



