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<br />664
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<br />ZOOLOGY-FISHES.
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<br />Br. 3 on each side; D. 1-10; A. 1-11; C. 8-1-8-8-1-8; V. 1-8; P. 13;
<br />teeth 4.1-5.2. In this specimen, the head enters the total length including
<br />caudal fin 4.50 times; eye entering length of side of head 7 times; base.
<br />of anal fin 11.50 in total length.
<br />Specimen No. 504 A, from same locality, has: Dr. 3-3; D. 1-11; A.
<br />1-10; C. 8-1-8-8-1-7; V.1-R; P.13; teeth 4.2-4.2. Head enters total length
<br />4.50 times; eye in length of side of head 7.75; base of anal fin 10.nO of
<br />total length. All the individuals of this species which have been examined
<br />possess on the end of tlIc snout a little behind its anterior margin and on
<br />the median line of the head, a peculiar knob or tubercle, which is more
<br />plainly visible in alcoholic than fresh specimens. Gila graciris possesses it
<br />in a much less marked degree.
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<br />No. Locality. Date. Collector.
<br />45 Arizona.. _ . _. h _ . _. . _ _ . . _ . . ...---. .......... - , 1871 F. Dischoff.
<br />8XXX -. _. _ _ do _. _.. _ . _ _ _.. . _ _. _. . _.... .. _... _ _.. ..._ do _ .._. Do.
<br />504 Zuni River, N. Mex_ h_... h_... _"'_' __.. July, 1873 H. W. Henshaw.
<br />504 A . . . -- . do . .. ... . _ __ _. _. _ . . __. h _. .. _. . _ . __ . ..... do. __.. Do.
<br />2A2 Gila River, Ariz ............. .......... .......... .......... ... -. Sept., 1873 Do.
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<br />GILA ELEGANS, Bd. & Gir.
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<br />Gila-elegans, BD. & GIR., Proc. Acad. Nat. Sci. Phila., yi, 1853, 30fJ.-liel., Sitgreave's
<br />Exp. Zulli & Col. Riv., 1853, luO, pI. ii.-Gm., Proc. Acad. Nat. Sci-
<br />Phila., viii, IS5G, 205.-Icl., U S. & Mex. Bound. Surv., pt. ii, 1859, Ichthy.
<br />ology, G1.-COPE, U. S. Geol. Sur.. Terr., 1870, 441.
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<br />This species, resembling the preceding, but more elongated in form,
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<br />and having larger scales, has been but spa;:ingly observed by the members
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<br />of this expedition; the only specimen having been hrought from South-
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<br />western Arizona by F. Bischoff of the expedition of 1871. This is in such
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<br />bad condition that the distinctive characters can hardly be made out.
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<br />No. Locality. Date. Collector.
<br />S4 Z Southwestern Arizona.... . _.... ............... - , 1871 F. Bischoff.
<br />381 A San Juan River, N. Mex. ..____ .._... ...... -, 18]4 Lt. R. Birnie.
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