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<br />]64
<br />
<br />Utah .Icadcmy of Sciences, Arts and Letters
<br />
<br />[Vol. XIII,
<br />
<br />(2) (348) Sa]mo pleuriticus Cope. Colorado River Trollt.
<br />
<br />Sa]mo pleuriticus Cope.
<br />Salmo pleuriticus Cope.
<br />Zoology.
<br />Distribution: In lakes at the headwaters of the Duchesne River, August,
<br />1930.---.Tanner. Verna], Ju]y, I 926.-Tanner.
<br />Remarks: This trout was named in 1872 by Professor Cope from specimens
<br />obtained at the headwaters of the Green River. It is the common "native"
<br />in all the Uintah mountain waters which drain into the Green River.3
<br />
<br />Hayden's Ceol. Surv. Mont. 1872, p. 47.
<br />Vvhecler Survey, 1875, page 693. Vol. S.
<br />
<br />II. Genus Leucichthys Dybowski, 1874.
<br />
<br />(3) (396) Leucichthys gemmifer Snyder. Cisco.
<br />Plate 1, Fig. 4.
<br />Leucichthys gemmifer Snyder. Bull. U. S. Bur. Fish XXXVI,
<br />1919.
<br />Type Locality: Bear Lake, Idaho and Utah.
<br />Distribution: Found only in Bear Lake, Utah and Idaho.
<br />Remarks: This is the common white-fish of Bear Lake, where it is called
<br />.. Peaknose." It is a good food fish, free from .. bones." It was taken
<br />with the gill net at depths of 100 to llO feet in September, 1930. The
<br />digestive tracts of 30 specimens were studied and it was found that over
<br />95 per cent of the food consisted of Diaptomtls. From this study it
<br />would seem that the food at this time of the year consists mainly of
<br />plankton species.4
<br />
<br />--
<br />
<br />III. Genus Prosopium Milner (Whitefish)
<br />
<br />Prosopium williamsoni (Girard)
<br />Plate I, Fig. 5
<br />Prosopium williamsoni (Girard) Jordan, Evermann, and Clark,
<br />Check List of Fishes, U. S. Bureau of Fisheries, 1930.
<br />Coregonus williamsoni Girard, Jordan and Evermann. Fishes of
<br />North America. Bull. 47. U. S. Nat. Mus. 1896, p. 463.
<br />Distribution: Provo, Weber, Spanish Fork, Logan and Sevier Rivers, Utah
<br />Lake, near mouth of Provo River.
<br />Remarks: This species is not so common now as it was thirty to forty years
<br />ago. It is of times taken with a hook in the above mountain streams. A
<br />few specimens were taken with the seine in Utah Lake in March, 1927,
<br />near the mouth of Provo River. The Mountain herring is considered a
<br />very choice food fish.
<br />
<br />(5) ( 424 ) PrOllopium spilonotus
<br />
<br />Coregonus spilonotull Snyder.
<br />1919.
<br />Type Loca.lity: At Bear Lake, Utah and Idaho.
<br />Distribution: Found only in Bear Lake, Utah and Idaho.
<br />Remarks: This species is common, as it is taken iJ?- large numbers alo~
<br />with L. gemmifer. In September, 1930, 113 specImens were taken WIth
<br />
<br />~ The Genu. Salmo in Utah. Proc. Ut. Acad. Sei., Arta and Lettero, Vol. 10.
<br />TlIi. apecie. and S. .... are di.C1I.....t in more detail. .
<br />4 .4 4letaikd .tad,. of the food of all nath'c Utah fishes i. being made by the writer.
<br />
<br />
<br />(4)
<br />
<br />(420)
<br />
<br />(Snyder.) Bonneville Whitefish.
<br />Bull. U. S. Bureau of Fish, XXXVI,
<br />
<br />
<br />1 ().3(ll
<br />
<br />TOil,,"": "I St/((fy of t/;e Fishes of Utah
<br />
<br />165
<br />
<br />th~ gill neh ill W;l(er from 100 to ] 10 feet deep. This whitefish never
<br />exceeds 6 tu 8 inehe, in length, yet it is a very good food fish. The study
<br />of the stomachs of five specimens shows that they feed upon planktom
<br />as well as food taken on the lake bottom. Professor Snyder reports that
<br />speeimcns taken in January had eaten the eggs of L ge111/1lifer.
<br />
<br />(6) (42S) Prosopium abyssicola (Snyder). Bear Lake Whitefish
<br />
<br />C-regonus abyssicola Snyder. Bull. U. S. Bur. Fish, XXXVI, 1919.
<br />Type Locality: Bear Lake, Utah and Idaho.
<br />DistribuL '1: Found only in Bear Lake, Utah and Idaho.
<br />]\emar](s This is the large whitefish of Bear Lake. ]t attains a length of
<br />about 2 to 14 inches. It is not very common now and is found mainly
<br />in del water. This species and the Utah trout have been taken in con- '
<br />sider,: e numbers with the gill nets and shipped. The lowering of the
<br />lake] eJ has reduced the food supply as well as destroyed the spawning
<br />areas f seyera] species of the Bear Lake fish.
<br />. h~s been suggested that fishing in Bea~ Lake may be improved by
<br />1ntn ;ucmg tile Mackmaw tront. The peak-nose would probably be a
<br />som 0: of food for this species.
<br />
<br />FAMILY CATOSTOMIDAE
<br />
<br />IV. Genus Notolepidomyzon Fow]er.
<br />Plate II, Fig. 1
<br />(7) Notolepidornyzon utahensis Tanner. Uta.h Sucker.
<br />
<br />Notolepidomyzon utahensis Tanner, Copeia, 1932, No.3, pp. 135-
<br />36.
<br />
<br />Type Locality: Santa Clara Creek, near Veyo, Wash. Co.,
<br />Utah.
<br />Distribution: Tributaries to the Virgin River, Washington Co., Utah.
<br />Remarks :.. A comI?on species and one that helps relate the species such as,
<br />clarka of the Colorado River Basin with p, santa-a1UJe of Southern Cali.
<br />fornia.
<br />
<br />V. Genus Pantosteus Cope.
<br />
<br />(8) (7.31) Pantosteus platyrhynchus (Cope). Mountain Sucker.
<br />
<br />Minomus PlatyrhynchusCope. Proc. Am. Phil. Soc.,. Phila., 1874,
<br />p. 134.
<br />Type Locality: Utah Lake, Utah.
<br />Pantosteus platyrhynchus (Cope), Cope and Yarrow, Rept. Upon
<br />Coli. of Fishes. 1871-2-3-4. Wheeler Survey Rept. Vol. V. Zool.
<br />pp. 673-4, 1875.
<br />Distribution: Provo, Jordan, \.yeber, Spanish Fork and Sevier Rivers.
<br />Hemarks: This species is common in the majority of large streams of the
<br />Bonneville Basin. It is known as the "l\fud Sucker" in some parts of
<br />the state. ~rofessor Snyder (1925) discusses the specimens of P. Platyr-
<br />I:Yllchus whIch he collected in Utah in 1917.
<br />
<br />(!J) (734)Pantosteus virescens Cope. Blueheaded Sucker.
<br />
<br />PantosteulI viresc:ens Cope. \Vheeler's Surv. Zoo I. Vol. V, 1875,
<br />p. 675.
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