(568 



ZOOLOGY— FISHES. 



Do not often take the hook, except when baited with grubs, of which food 

 they are fond. Feed on the bottom and are sluggish in their movements. 

 Largest seen weighed seven pounds, and were twenty inches long, but will 

 average only one pound apiece. Many of these fishes, which must eventually 

 become of considerable importance to the settlers, are simply wasted; little 

 care being taken to return them to the water when not wanted, a practice 

 which should be prevented by law. 



No. 



2lS 



500 



50I 

 502 



'39 

 66 X 



504 A 

 5°3 

 5°3 X 

 5°5 



505 P 



505.2 



Locality. 



Iron Springs, Utah 



Utah Lake, near Provo, Utah , 



do 



do 



Gunnison, Utah 



Denver, Colo 



Zufii, N. Mex 



do 



do 



do 



Colorado Chiquito, N. Mex. 

 do 



Date. 



Aug., 1S72 

 ....do 



. ... do 



. ... do 



Sept., 1872 

 May, 1873 

 July. 1873 



.... do 



. ... do 



.... do 



, 1873 



. 1873 



Locality. 



Dr. H. C. Yarrow. 

 Dr. H. C. Yarrow and H. W. 

 Henshaw. 



Do. 



Do. 

 H. W. Henshaw. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



Do. 



SIBOMA ATRARIA var. LONGICEPS, Cope. 

 Plate XXIX, Fig. 4. 



This form differs from the typical in having the head longer and the 



IS 



scales larger. Scales, Ho. Colors same as S. ahraria. 



5 



This variety was discovered by Dr. H. C. Yarrow in Snake Creek 

 Valley, Nevada, who remarked that, while very abundant and the only 

 species of this creek, in Schell Creek Valley, not far distant, no fishes 

 whatever are found. The conditions of life being apparently similar in 

 both streams, their difference in this respect was not explained. 



