336 PROCEEiDINGS OF THE NATIONAL MUSDEUM vol. 94 



KEY TO THE SPECIES OF FARLOWELLA REPORTED FROM VENEZUELA 



(See tables 27 and 28) 



la. Produced part of bony snout measured from anterior edge of naked area con- 

 taining mouth to ti^ of snout 4 to 4-1/2 times in distance from middle of 

 anal depression (anus) to tip of snout Farlowella acus (Kner) 



lb. Produced part of bony snout in front of mouth depression 3.3 to 3.6 times in 

 distance from anus to tip of snout Farlowella vittata Myers 



Ic. Produced part of bony snout 9.3 to 10 times in distance from anus to tip of 

 snout ^ Farlowella curtirostra Myers 



FARLOWELLA ACUS (Kner) 



Acestra acus Kner, Denkschr. Akad. Wiss. Wien, vol. 6, p. 93, pi. 8, fig. 1, 1853 

 (ref. copied). — GxJntheh, Catalogue of the fishes in the British Museum, 

 vol. 5, p. 261, 1864 (Caracas). 



Farlowella acus Regan, Trans. Zool. Soc. London, vol. 17, pt. 3, p. 304, 1904 

 (Venezuela). — Eigenmann, Indiana Univ. Studies, vol. 7, No. 44, p. 9, 1920 

 (El Concejo, Rio Tiquirito, Venezuela). — Myers, Stanford Ichth. Bull., 

 vol. 2, No. 4, p. 102, 1942 (Rio Amana, 6 km. east of Santa Barbara, Monagas, 

 in the Rio Guanipa drainage, Venezuela). — Eigenmann and Eigenmann, 

 Occas. Pap. California Acad. Sci., vol. 1, p. 358, 1890 (Caracas, Venezuela). — 

 RiBEiRO, Rev. Mus. Paulista, vol. 10, p. 717, 1918 (Rio Cabriale, Venezuela). 



FARLOWELLA VITTATA Myers 



Farlowella vittata Mters, Stanford Ichth. Bull., vol. 2, No. 4, p. 103, fig. 12, 1942 

 (Rio Uribanto, from San Cristobol to the Llanos, Venezuela). 



U. S. N. M. No. 121083, Rio Gudrico and tributaries, between San Sebastian 

 and San Casimiro, Estado de Aragua, Venezuela, L. P. Schultz, G. Zuloaga, 

 Roger Sherman, and William Phelps, Jr., May 12, 1942, 5 specimens. 



FARLOWELLA CURTIROSTRA Myers 



Farlowella curtirostra Myers, Stanford Ichth. Bull., vol. 2, No. 4, p. 102, fig. 11, 

 1942 (Quebrada Tabor, tributary to Motat^n system, 30 km. north of Trujillo, 

 Venezuela) . 

 U. S. N. M. No. 121081, Rio San Pedro at bridge, Motatdn system, L. P. Schultz, 

 March 20, 1942, 4 specimen, 52.7 to 112.5 mm. 



U. S. N. M. No. 121082, Rio San Juan at bridge, Motatdn system, L. P. Schultz, 

 March 20, 1942, 2 specimens, 49.2 and 87.6 mm. 



Genus STURISOMA Swainson 



Slurisoma Swainson, The natural history and classification of fishes, etc., vol. 1, 

 pp. 333, 335, 337; vol. 2, pp. 189, 304, 1838. (Type, Loricaria rostrata 

 Agassiz.) 



KEY TO THE SPECIES OF STURISOMA REPORTED FROM VENEZUELA 



la. Number of plates along midsides 18 + 16; head V/i in standard length; width 

 of head at base of pectorals V/s; snout 1%; dorsal fin iVg; pectoral l^i; pel- 

 vies 1% in length of head; width of body at anal 6}^ times in distance from 

 anal to caudal base (Rio Meta)-.-Sturisoma tenuirostris (Steindachner) 



16. Plates ?+10 to 13 totaling 33 to 37 (according to Regan and to Ribeiro); 

 head i}i in standard length; width of head 2, snout 1>^, eye 8, all in length 

 of head ; width of body at anal origin 5 in length of caudal peduncle. 



Sturisoma rostrata (Agassiz) 



