338 PROCEEiDINGS OF THE NATIONAL MUSEUM vol.94 



STURISOMA TENUIKOSTRIS (Steindachner) 



Oxyloricaria tenuirostris Steindachner, Anz. Akad. Wiss. Wien, vol. 47, p. 410, 

 1910 (Rfo Meta, Venezuela). 



Steindachner gives an abbreviated description of this species, and 

 I have inchided in the key for festivum the same characters even 

 though they may not be very diagnostic. 



STURISOMA ROSTBATA (Agassiz) 



Loricaria rostrata Agassiz, in Spix, Selecta genera et species piscium . . . Bra- 

 siliam . . ., vol. 5, pi. 3, fig. 1, 2, 1829. — Peters, Monatsb. Akad. Wiss. 

 Berlin, 1877, p. 471 (Calabozo, Venezuela). — Eigenmann and Eigenmann, 

 Occ. Papers California Acad. Sci., vol. 1, p. 366, 1890 (Calabozo) 



STURISOMA FESTIVUM Myers 



Sturisoma festivum Myers, Stanford Ichth. Bull., vol. 2, No. 4, p. 100, figs. 8-10, 

 1942 (Rfo Monay, 35 km. north of Trujilla, Motatdn system, Venezuela). 



Collections from the Maracaibo basin, Venezuela, made by Leonard 

 P. Schultz in 1942: 



U.S.N. M. No. 121079, Rfo Motatdn, 8 km. below Motatdn, March 24, 3 

 specimens, 29.1 to 44.3 mm. 



U.S.N.M. No. 121078, Rfo Jimelles, 12 km. east of Motatan, Motatdn system, 

 March 24, 2 specimens, 35.7 and 103.5 mm. 



U.S.N.M. No. 121077, Rfo Negro below mouth of Rfo Yasa, March 2, 3 speci- 

 mens, 83.5 to 104.1 mm. 



U.S.N.M. No. 121076, Rio Ap6n, about 35 km. south of Rosario, February 26, 

 1 specimen, 50.5 ram. 



U.S.N.M. No. 121080, Rio Motatdn at bridge 22 km. north of Motatdn, March 

 17, 5 specimens, 45 to 128 mm. 



Genus HYPOPTOPOMA Giinther 



Hypoptopoma GtJNTHER, Proc. Zool. Soc. London, 1868, p. 234. (Type, //. 

 thoracatum Giinther.) 



HYPOPTOPOMA THORACATUM Gunther 



Hypoptopoma thoracatum GfJNTHER, Proc. Zool. Soc. London, 1868, p. 234, fig. 2. — 

 Peters, Monatsb. Akad. Wiss. Berlin, 1877, p. 471 (Calabozo, Venezuela). — 

 Steindachner, Denkschr. Akad. Wiss. Wien, vol. 41, p. 47, 1879 (Amazon 

 River at mouth of Rio Negro, Calabozo, Venezuela). 



