48 PROCEEDINGS OF THE ACADEMY OF [Feb., 



Girard. Rio Membres, Mexico. J. H. Clark. From the Smith- 

 sonian Institution (No. 168). 



Eight from Watrita Creek, Colorado; five from Nutria and two 

 from Fort Wingate, New Mexico. 

 Pantosteus santa-anae Snyder. 



Proc. U. S. Nat. Mus., XXXIV, 1908, p. 33. Santa Ana River, near River- 

 side, California. 



No. 39,129, A. N. S. P., paratype. Riverside, California. Prof. 

 J. 0. Snyder. 



Pantosteus delpMnus (Cope). 



Two from Provo, Utah. 



Catostomus latipinnis Baird and Girard. 



One from Fort Bridger, Wyoming. 



It may be stated that Eurystomus Rafinesque proposed in 1820 

 is preoccupied by Viellot in 1816, and Acomus Girard proposed in 

 1856 is preoccupied by Reichenbach in 1852. Both Viellot and 

 Reichenbach's names were used for birds. Thus Eurystomus and 

 Acomus are very fortunately erased as subgenera of Catostomus. 



Catostomus retropinnis Jordan. 



One hundred and ten examples from the Yellowstone River at 

 Camp Thorne. 

 Catostomus occidentalis Ayres. 



CaloHlomus labiatus Ayres, Proc. Cal. Acad. Sci., 1855, p. 32. Stockton, 

 California. 



No. 6,741, A. N. S. P., typical? of Catostomus labiatus Ayres. 

 Sacramento River at Stockton, California. W. O. Ayres. 



A smaller example from the same donor labelled "California," 

 and another from the Russian River in California (Cope). These 

 all agree in the small scales on the belly, between 65 and 70 counted 

 from the gill-opening anteriorly to the ventral origin. The figure 

 of Catostomus occidentalis given^ by Evermann and Meek does not 

 agree with these examples, as both it and .that of Catostomus tsiltcoo- 

 se7isis Evermann and Meek show the breast naked and the scales 

 on the lower part of the abdomen not smaller than those just below 

 the lateral line. 

 Catostomus occidentalis humboldtianus (Snyder). 



Catostomus humboldtianus Snyder, Bull. Bur. Fisher., XXVII, 1907, p. 163, 

 fig. 1. Bear, Eel and Mad Rivers, California. 



Nos. 39,131 and 39,132, A. N. S. P., paratypes of Catostomus 

 humboldtianus Snyder. Mad Creek, Oregon. Prof. J. O. Snyder. 

 " Bull. U. S. F. Com., XVII, 1897 (1898), p. 69. 



