312 PROCEEiDINGS OF THE NATIONAL MUSIEITM vol.94 



COCHUODON PLECOSTOMOIDES Eigenraann 



Cochliodon plecoslomoides Eigexmann, Indiana Univ. Studies, vol. 7, No. 44, 

 p. 7, 1920 (Rio Bue, Maracay, Venezuela) {nornen nudum); Mem. Carnegie 

 Mus., vol. 9, No. 1, p. 225, pi. 11, fig. 1, 2, 3, 1922 (tyi)e from Quebrada Cram- 

 alote, Villavicencio, Colombia; Rfo Bue at Maracay, \'alencia Basin). 



COCHLIODON P03PISILI, new species 



Plate 11, C, D 



Cheiridodus hondae Myers, Stanford Ichth. Bull., vol. 2, No. 4, p. 100, 1942 

 (Rfo Monay, 35 km. north of Trujillo, Motatdn system, Venezuela). 



Holofype. — U.S.N.^M. No. 121003, a specimen 66.6 mm. in standard 

 length, taken by Leonard P. Schultz on February 21, 1942, in the Rio 

 Pahnar near Totuma about 100 km. southwest of Maracaibo. 



Paratypes (all collected by L. P. Schultz).— U.S.N.M. No. 121010, 

 13 specimens, 25.2 to 66 mm. in standard length, taken with the 

 holotype and bearing the same data; U.S.N.M. No. 121008, 24 speci- 

 mens, 15 to 62.6 mm. from the Rio Machango about 20 km. above the 

 bridge south of Lagunillas, Maracaibo Basin, March 21, 1942; 

 U.S.N.M. No. 121006, a specimen 14 mm. long from the Rio Machango 

 at the bridge, March 16, 1942; U.S.N.M. No. 121009, a specimen 27 

 mm. in length taken March 6, 1942, in the Rio Palmar at the bridge 

 70 km. southwest of Maracaibo; U.S.N.M. No. 121005, one fish 36.6 

 mm. in standard length, taken March 25, 1942, in the Rio Motat§,n, 

 4 km. above Motatan; U.S.N.M. No. 121011, 11 specimens, 21 to 

 35 mm. long, taken on March 24, 1942, in the Rio Motatc^n, 8 km. 

 below Motatan; U.S.N.M. No. 121007, 46 specimens, 16 to 47 mm., 

 from the Rio Motatan at bridge 22 km. north of Motatan, March 17, 

 1942. All localities in the Maracaibo Basin. In addition, U.S.N.M. 

 No. 121004, 6 specimens, 15 to 19 mm. in standard length that I 

 am not certain arc this species because of their small size. They were 

 collected m the Rio Socuy 3 km. above its mouth on February 24, 1942. 



Description. — Based on the holotype and the numerous paratypes 

 listed above. All measurements are expressed in hundredths of the 

 standard length, those for the holotype first, followed by those for 

 the paratypes in parentheses. Standard length (in mm.) 66.6 (62.6; 

 56.6); total length (in mm.) 101.6 (95.6; 83.7). 



Length of head from tip of snout to rear edge of temporal plate 34.7 

 (32.8; 36.7); length of head from tip of snout to posterior edge of 

 supraoccipital plate 34.5 (35.6; 37.1); tip of snout to upper edge of 

 gill opening 26.0 (25.9; 26.8); width of head at coracoids or in front 

 of base of pectorals 29.3 (29.7; 29.2); greatest depth of body 22.8 

 (24.1; 21.2); length of snout 21.9 (20.8; 23.7); width of fleshy inter- 

 orbital space 16.5 (17.4; 17.3); diameter of eye 6.16 (6.70; 6.39); 

 postorbital length of head 9.31 (10.4; 10.8) ; length of caudal peduncle 

 (distance from base of last anal ray to base of midcaudal fin rays) 



