1913.1 



NATURAL SCIENCES OF PHILADELPHIA. 



71 



above I. 1., frequently 11, seldom 13, rarely 14; usually 7 scales 

 below 1. 1., frequently 8, often 9; usually 25 predorsal scales, fre- 

 quently 24, often 26, seldom 23 or 27, rarely 29 or 30; snout 3i to ^ 

 in head; eye 3^ to 6; maxillary 3 to 4; interorbital 2f to Sf; teeth 

 usually 5 — 4, rarely 5—5 or 4 — 4; length If to 8 inches. 



No. 4,914, A. N. S. P., cotype of Algansea formosa Girard. Mercede 

 River, California. Dr. A. L. Heermann. Smithsonian Institution 

 (No. 196). 



Fig. 7. — Rutilus fonnosus (Girard). (Cotype of Algansea formosa Girard.) 



Also 38 other examples from: Chewaucan (Cope), Warner's Third 

 Lake (Cope), Silver Lake (Cope), Oregon; Mohave River (Hammond), 

 Pose Creek (Heermami), California. 



Seven more examples, though with uncertain data, were likely 

 from the Mohave River in California?. They are not included in 

 the above computations. 



Myloleucus pulverulentus Cope, from Warm Springs, Utah, as 

 represented by a co-type in the collection, is not a Rutilus, and 

 therefore cannot be identified with Pogonichthys symmetricus Girard, 

 as the teeth are biserial. It is likel}^ identical with Leuciscus lineatus 

 (Girard). 



