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<br />EXPI.02d3TIO:Y$ IN COLORADO AND UTAH. 4 t ?,
<br />?u
<br />Divide. All these imams are well stocked with trout, their fauna being pre= - -
<br />k$ that cif the Gunni ;:gyn.
<br />leer San Juan enters the desert country and receives large numbers of m
<br />*,,r yosi dry Beds flooded with mud after a rain. The water becomes warm, _
<br />e3117 'although all the upper sources of the river are clear and cold.
<br />- fffias$ € thAt the lower San Juan and the Colorado would be well suited for
<br />Ole'of the larger cat-fishes as Le per-
<br />, olinaris, Ameiurus nigricans, and
<br />per-
<br />i;tcr g4artctatus. It would be well to make a plant of these at Green River
<br />g fan one on the San Juan at Arboles.
<br />Tlio de las Animas Perdidas.-The Animas River is the largest tributary of
<br />the 9a6 Juan. It rises in the mountains above Silvertou. Above its caflon of t' Lost
<br />sodV it is clear, shallow, and swift, flowing, tbrough an open canon with a bottom :
<br />of ro" In its upper course it is said to be without fish, one of its principal triba- <
<br />- tijoi;M?_ ft*eralCreek, riving in Red Hountain and Uncompahgre Pass, being highly 3°..
<br />charged with salts of iron. b
<br />_U. _ e deep and narrow Canon de las Animas Perdidas" are many very deep
<br />*-ald to be full of trout. Below the canon is {, Hermosa Park," in which, for .
<br />P0014-
<br />miles, the ricer flows over sandy bottom, with many deep holes and slight
<br />eurM _Tn:.these holes are many trout, and with them Pantosteus tielphinus,Agosia
<br />yarx spa A Cottus bairdi punctul atits.
<br />A Anfiiias City, above Duranao
<br />the stream enters a stony mesa, a glacial moraine,
<br />W by fta dam, has formerly made a lake of Hermosa Park. From th'is point, for
<br />the bottom is so covered with boulders that seining is impossible. At
<br />Duh Eheriver is 2 to 3 roils wide and 2 to I feet deep; in the deeper holes, 6 to 8.
<br />The tiEx graft a is about 680. The stream was seined at various places from Animas
<br />City
<br />atpont about o miles above Durango.
<br />49-Durango it is said that the larger suckers (X. Mho, C. latipinnis) and the 11 White '
<br />sabn6Q.'(%V4Tocheilus) ascend the river in the spring, going back to deep water after _
<br />,.
<br />- spawtzr rr summer.
<br />M Igtner's Creek, at Durango.-This isa littlestream entering the Animas opposite
<br />Durango. In summer it is 2 to 3 feet wide, shallow, clear, and warm (720) with sands .
<br />bottom; It contains Cottim bairdi pa,act.ulatus and 3gos'ia yarroaci. Higher up its
<br />deeper pools are-said to contain small trout. 3
<br />12-Rio Florida.-This is a clear, cold stream, flowing into the animas below Du- d
<br />tango. It was seined at several points above the bridge about 3 miles east of Durango T
<br />and north of Florida Station. It flows through a wooded valley- over round boulders
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<br />:an with few deep places. Trout are abundaut; also Pantosteu.? delphinus, Agosia yar-
<br />roam, and Cottus bairdi punctulatus. The last-named species lurks under every stone in
<br />the river.
<br />18. La Plata Ricer.-Kest of the Animas River is the Rio la Plata. It rises in
<br />the mountains above Fort Lewis, but the water mostly- sinks in the sand and gravel
<br />txlow the fort. There are some trout here, but it is said that the stream contains too 4
<br />much iron to be well adapted for fish. It was not visited by as.
<br />19. Rio de los Pinos (seen at Ignacio), the nest river east of Rio Florida, is a clear,
<br />swift stream, with gravelly bottom, 3 rods wide and 1 to 3 feet deep. It runs through zR
<br />a broad vaney which may become valuable for agriculture. I am told that Patrick
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