ZOOLOGY PISHES. 



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

 interorbital region once. Length of head one-fourth length to caudal fin ; 

 depth nearly equal. Scales, 1 1-12-56-6. Radii : 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 lateral line. Differs 

 from C.'liydropltlox in the obtuse muzzle, large eye, and smaller scales above 

 the lateral line. 



Very abundant at Provo, Utah. 



GILA HYDROPHLOX, Cope. 



Clinostomus hydrophlox, COPE, U. S. Geol. Surv. Montana & Adjacent Territories, 1871, 

 475. Id., Proc. Am. Phil. Soc. Phila., 1874, 133. Id., Rep. Plagop. & 

 Ichthy. Utah, 1874, 7. 



DESCRIPTION. Length of head 4.75 times in total, exclusive of caudal 

 fin ; depth of body 4.5 times in same. Eye 5 times in head, 1 J times in 

 interorbital width. Front straight; lower jaw projecting beyond upper; 

 mouth descending ; end of maxillary just reaching line of orbit. Isthmus 

 narrow. Teeth 5.2-2.4. Scales, 15-58-7. Radii: D. I. 8 ; A. I. 11. Ven- 

 trals not reaching anal. Length 6 inches. Color above olive, with a blackish 

 inferior border, extending from the superior margin of the orbit, Below 

 this a crimson band, and still lower a blackish band, passing from the epi- 

 clavicular region above the lateral line to the basis of the caudal fin. Be- 

 low this crimson in front, silvery behind. Fins unspotted. Suborbital bones 

 crimson ; cheek golden. This description is given for purposes of com- 

 parison. 



GILA TAENIA, Cope. 



PLATE XXVII, PIGS. 5, 5a. 



Clinostomus tainia, COPE, Proc. AID. Phil. Soc. Phila., 1874, 133. Id., Rep. Plagop. 

 & Ichthy. Utah, 1874, 7. 



A smaller species than the last, distinguished by the smaller number of 



