52 PROCEEDINGS OF THE ACADEMY OF [Feb., 



The other examples were all obtained by Cope, who records them 

 as Catostomus tahoensis." They include three from Warner's Third 

 Lake, in Oregon, and one from high land between Warner's Lake 

 and Goose Lake; three from Pyramid Lake, Nevada. 

 Catostomus commersonnii (Lac^pMe). 



Catostomus alticolus Cope, Proc. Amer. Philos. Soc. Phila., XI, 1874, p. 138. 

 Twin Lakes, Colorado. 



Nos. 18,729 and 18,730, A. N. S. P., paratypes of Catostomus 

 alticolus Cope. Twin Lakes, head of Arkansas River at 9,500 feet 

 elevation, Colorado, E. D. Cope. 



Also numerous other examples examined, though those which 

 I have already recorded elsewhere are not included in the following 

 list of localities. Boston, Massachusetts; Lake Champlain; Lake 

 Erie; Chadd's Ford Junction, Willistown Barrens, Langford Run, 

 Whetstone Run, Collar Brook, CoUingdale, Fairmount Park, Sandy 

 Run, Willits Run (all near Philadelphia), Saucon Creek, Monocacy 

 Creek and Lime Kiln Run near Bethlehem, and North Branch of 

 Altman Creek in Indiana County, Pennsylvania; Deer Creek near 

 The Rocks, Harford County, Maryland; Roanoke River, Holston 

 River and Stroubles Creek in the Kanawha River Basin, Virginia; 

 Catawba and French Broad Rivers, North Carolina; Cleveland, 

 Ohio; Miami River and Richmond, Indiana; Brook River and 

 Fayette, Iowa; Marshfield and Calhoun, Missouri; "Clopell River" 

 in 1873. 

 Catostomus commersonnii sucklii (Girard). 



Twenty-four examples from Camp Thorne, Yellowstone River 

 (E. D. Cope). These all agree in having the dorsal origin inserted 

 midway between the snout tip and the caudal base, a character 

 virtually expressed in Girard's original description. Compared with 

 numerous examples of Catostomus cofmnersonnii, the dorsal origin 

 was found in all examples examined, except the very young, nearer 

 the snout tip than the caudal base. 



Catostomus ardens Jordan and Gilbert. 



One from Utah Lake (E. D. Cope in 1882), Utah. Nine from 

 Snake River at Springfield, Bingham County (Dr. Henry Skinner 

 in Augu.st, 1906), Idaho. 



Catostomus gila Kirsch. 



One from New Mexico (E. D. Cope in 1872), and three more from 

 the same State in the Rio San Francisco of the Gila Basin, Arizona. 



8 Proc. Acad. Nat. Sci. Phila., 1883, p. 152. 



