338.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 555 



IOTES ON A COLLECTION OF FISHES OBTAINED IN THE GILA 

 RIVER, AT FORT THOMAS, ARIZONA, BY LIEUT. W. L. CARPEN- 

 TER, U. S. ARMY. 



BY PHILIP H. KIRSCH. 



The following is a list of the fishes collected by Lieut. W. L. Oar- 

 later U. S. Army, at Fort Thomas, on the Gila River, Arizona Ter- 

 ritory, 'and sent by him to the museum of the University of Indiana, 



Line 4, 1887. 



Lieutenant Carpenter has sent with them a number of notes on the 

 mbits and local names of the fishes. It is his opinion that there are 

 but these seven species found in the Cxila River, at Fort Thomas, and 

 that several of the species described from that stream are not really 

 distinct He states further, that Oila emorii and PtychocMlus lucim 

 present varying characteristics with different stages of growth. These 

 may have been taken for many species. 

 1 Catostomus latipinnis Baird & Girard. 



One specimen, 19 inches long. This specimen agrees with the de- 

 scription of Jordan & Gilbert in the Synopsis of the Fishes of North 

 America, except in having a longer preorbital bone, this being more 

 than twice as long as deep. The dorsal is not deeply incised, its height 

 not equal to length of head. 



2. Catostomus gila Kirscb, sp. tiov. 



Three specimens. 12 to 14 inches long. This species is closely allied 

 to C aniens Jordan & Gilbert, but differs from it in having the body 

 more compressed, the antedorsal region much less elevated, and not so 

 full the caudal peduncle shorter and more compressed, and the least 

 depth in length If. The dorsal is shorter and higher, its longest ray 

 nearly twice the length of last, and longer than the base of fin the 

 free margin incised, the veutrals being longer and more pointed. Head 

 subconic, preorbital broad, twice as long as wide; snout 2£ m head : 

 eve small, 6£ in head, 3 in snout, and 3 in interorbital space; lips 

 rather large, the upper with about 4 rows of papilla,, the lower divided 

 by a narrow fissure, to near its base, into two fleshy lobes, each with 

 about G rows of papilla?., the lobes about length of eye. 



Dorsal short and high, its 4th ray midway between tip of snout and 

 base of caudal fin on lateral line, the last ray little more than halt the 

 length of first ; base of fin H in longest ray and 1 J in head. Anal short 

 and high reaching to base of caudal fin, its base 2 in that of dorsal, ts 

 longest ray (3d) slightly longer than that of dorsal Cauda arge < - 

 panded, forked about £ of its median rays, width at origin 1 m baseof 

 dorsal ; lower lobe the longer, its longest ray about equal that ol dorsal. 



