476 GEOLOGICAL SURVEY OF THE TERRITORIES. 



beyond upper; montli descending; end of maxillary just reaching line 

 of orbit. Isthmus narrow. Teeth, 5.2-2.4. Scales, 15-58-7. Eadii, D. 

 I. 8 ; A. I. 11. Yentrals not reaching anal. Length, 6 inches. 



Color above olive, with a blachish inferior border, extending from the 

 superior marij;in of the orbit. Below this, a crimson band, and still 

 lower, a blackish band, iDassing from the epicla^icular region above the 

 lateral line to the basis of the caudal fin. Below this, crimson in front, 

 silvery behind. Fins unspotted. Suborbital bones crimson ; cheek 

 golden. 



Blackfoot Creek, Idaho. Collection Xo. 13. 



Clingsto^ius montanus. Cope, sp. nov. 



Muzzle decurved, obtuse; jaws equal; end of maxillary extending be- 

 yond margin of orbit. Orbit large, entering the head 3.5 times and the 

 interorbital region ODce. Length of head, one-fourth leugth to caudal 

 fin; depth nearly equal. Scales, 11-12— 5G— 6. Eadii, D. I. 9; A. II- 

 12. Length, 3.5 inches. * 



Olive above, a dark band extending from epiclavicular region above 

 caudal line to caudal fin. Sides crimson as high as the lateral line. 



Numerous specimens (Xo. 8) from Grass Creek, Idaho. This brightly 

 colored species differs froui the last in the obtuse muzzle, large eye, and 

 smaller scales above the lateral liue. 



Catostomus generosus, G., (Proc. Acad. Nat. Sci. Phila., 1850,174;) 

 Acomus generosufi, G., (U. S. Pac. K. 11. Surv., X, p. 221.) 



This species is closely allied to the eastern C. teres, Mitch. : from Utah 

 Lake. 



PERCOMOItPHL 



Uranidea puts'CTULATA, Gill, (Proc. Boston Soc. N. H., 1862, p. 41.) 

 Gallatin Fork oi the Missouri and Warm Springs, Utah. 



CoTTOPsis semiscaber, Cope, sp. nov, 



Eadii, D. YII-18; A. 13; V. 1-4; first ray of anal below third of 

 second dorsal. Skin prickly above the lateral line, smooth beK)w it 

 l^osteriorly. Body compressed, profile rising rather steeply to the basis 

 of first dorsal fin. Eye 4.5 times in head, .75 time in interorbital space. 

 ]Muzzle contracted, maxillary bone reaching to below middle of pupil. 

 Two si)ines on preoperculnm. On an inferior anterior angle of opercu- 

 lum. Lateral line discoiitiiuied on last fourth of caudal peduncle. Head 

 one-third length without caudal fin. 



Below yellow ; dorsal line with a series of dark spots ; sides with 

 large, dark clouds. 



Three specimens from Fort Hall, Idaho. 



