Bull. U. S. B. F., 1912. 
Plate XXI. 
Fig. I to 4. — Scales of Ilespe) olencns symmetricus, X 20; San Joaquin River at Polaski, Oct, 20; length, 
90 to 108 millimeters. 
Fig, 5 TO 8. — Scales of Hesperoleucus venusius. X 20; (5 and 6) Coyote Creek, July 25, length 8=, millimeters; 
(7) Alameda Creek, June 15, length 94 millimeters; (8) Napa River, May 26, length 94 millimeters. 
