ICHTHYOLOGY OF VENEZUELA — SCHULTZ 



49 



Oceanogr. Coll., vol. 8, art. 2, p 139, fig. 63, 1943 (Cafio de Guanoco and Rio 

 Apure, San Fernando de Apure, Venezuela). 

 6 specimens, 18 to 27 and 143 mm., Rfo Apure at San Fernando de Apure, 

 F, F. Bond, February 16, 1936. 



HILDEBRANDICHTHYS, new genus 



The characters of the genus are those of the genotype. 

 Genotype: Hildebrandichthys setiger, new species. 



HILDEBRANDICHTHYS SETIGER. new species 



Figure 7 



Holotype. — U.S.N.M. No. 121779, only known specimen, 31.5 mm. 

 in standard length, collected near mouth of Cafio de Sagua, about 25 

 km. north of Sinamaica, by Leonard P. Schultz, March 12, 1942. 



Description. — The following measurements are expressed in hun- 

 dredths of the standard length for the holotype: Length of head 32.8; 

 greatest depth of body 22.6; length of snout 6.23; diameter of eye 8.85; 



Figure 7. — Hildebrandichthys setiger, new genus and species: Holotype (U.S.N.M. No. 

 121779), 31.5 mm. in standard length. Drawn by Mrs. Aime M. Awl. 



length of mandible or from tip of lower jaw to rear edge of joint of 

 mandible 18.3; distance from tip of snout to rear of maxillary 23.0; 

 width of interorbital space 6.56; postorbital length of head 18.3; 

 length of cheek 10.5; length of longest gill raker 6.56; longest ray of 

 dorsal fin 10.8; of pectoral fin 11.2; of pelvic fin 8.85; shortest mid- 

 caudal fin ray 11.5; length of anal fin base 23.9; length of dorsal fin 

 base 9.50; distance from pelvic insertion to anal origin 16.4; tip of 

 snout to dorsal origin 70.2; snout to anal origin 65.6; snout to pectoral 

 insertion 35.2; snout to pelvic insertion 49.8; length of caudal peduncle 

 or distance from base of last anal fin ray to midbase of caudal fin 18.0; 

 least depth of caudal peduncle 10.8. 



The following counts were made: Dorsal rays ii, 10; anal rays 

 iii, 22; pectoral rays i, 14-i, 15; pelvic rays i, 6-i, 6; and scale rows 

 from upper edge of gill opening to midbase of caudal fin 43. 



Head 3.15 and depth 4.5 in standard length; body somewhat com- 

 pressed, its greatest depth through pectoral fins; depth of head at 

 joint of mandible a little greater than postorbital length of head; 

 snout shorter than eye, nearly 9.2 in head; eye 3.7 in head; maxillary 



802207—49 1 



