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28 BULLETIN OF THE UNITED STATES FISH COMMISSION.
<br />back and below, although the number in the lateral line is about the same as in
<br />robzicta. Scales along middle line of back before dorsal obsolete or nearly so; mou
<br />a little larger than in Gila robusta. Least deptU of caudal peduncle, 1' in maxilla
<br />(1i in G. ro/Amtn). Gila, emoryi Baird S. Girard seems to be the young of G. elegarns.
<br />7. Ptychocheilus lucius Girard. A'hiie SaIMM
<br />This species is generally common, specimens haviugbeen taken by usin the Gu
<br />raison River at Delta, in the Uncompahgre and in Green River. It reaches a weig
<br />of 80 pounds or more in the large streams, and is justly regarded as a good food-fish
<br />The young have always a black caudal spot, the fins are slightly reddish, ai
<br />there is a slight traco of a• pale lateral band below a darker one.
<br />The scales are about 57 instead of 104 as shown in Girard's figure. Maxillary
<br />in head.
<br />8. Agosia yarrowi Jordan B. Evermann,sp. nov., Minno+o. (Apocope oscula Cope and Farrow;
<br /> Jrgyreuk osculus Girard).
<br />- This species is very abundant in the small streams in the mountain meadows.
<br />' the larger streams it is less common, and in the rivers below the mountains it is r,
<br /> Uicr specimens are from Tomichi Creek, Gunnison- River at Gunnison and at De
<br />. t Uncompahgre River, Green River, Eagle River at Gypsum, Rio de las Animas P6
<br /> das, Rio Florida, and Leitner's Creek.
<br /> Description from specimensfrom Tomichi .Creek. Head 41 in length; depth 5 to
<br />EE, x y Ii. 7; A.' 7 ; scales 74, 80, 71,-80, 83, 50,83, IV) 75, _76, 74, 74, 80, 82, in 14- specim€
<br />'
<br />i the average being about 16-8[143. Length'from
<br />2 f0 5 inch.
<br /> Body little compressed,elongate; headlong and rather heavy, bluntish; sn
<br />
<br />1 k-= short, obtuse, 2J to 21 in head; -eye small, 5J to 6; barbel small but distinct. I
<br />per lip, in about half the specimens, separated from the skiu of the snout by a f(
<br /> as usual in Agosia and moat other Cyprinidce. In the rest of the typical examples
<br />4 upper lip is joined menially -to the snout by a distinct frennm. These spesim€
<br /> although to all appearance specifically identical with the others, would belong to
<br />_'- genus Rhinichthys, as now defined. The frenum is, however, considerably narro,
<br /> than in Rhinichthys, and this fact may for the present serve to separate the spec
<br />,?-_ _ -- - from _that genus. Lips fully maxillary about 3? in -head; scales small; lateral 1
<br /> complete; dorsal fin well backward, its insertion about midway between base of c
<br /> dal and eve. Pectoral 1* in head, usually not quite reaching to ventrals, the Iai
<br /> reaching past vent. Caudal large. Color dark olive, more or less mottled above v
<br /> black; sides with two ill-defined dark lateral bands, the interspace paler. Aaih
<br />l fins mostly crimson in life w in related species. This sI?'es seems to differ from
<br />?
<br />
<br />--
<br />?. --
<br />nubila and A. adobe in its smaller scales, these species haying less than 70. Its sc€
<br /> are larger than in Agosia ok[ntla.
<br />t In the type of Argyreuar osoulue, from Rao Babocomorl,in Arizona, there are
<br /> Singles. In the types of Ace veutricosa Cope, rom Arizona and New 'Mfexii
<br /> _,
<br />(here are 89. We bare therefore_
<br />_ been compelled :to regsrd our spec%men as differ
<br /> -`
<br />from the original Argyreus osculua-ventricc?sci.
<br />' We have named-this species.for our Mend, Dr. Henry <l. Yarrow, in recog^nit
<br />-
<br /> of his work on the fishes of the Rio Colorado.
<br /> 9 SRI= aykiss VFalbaam (ear pleurfticus Gopej.?
<br />?" _
<br />y Trapper's Lake, Eagle, diver; Csnou Greed, Sweetwater Lakes, 'Gunn3aon Rig
<br /> Rio Florida
<br />.
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<br />spot
<br />in tl
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<br />Liuu
<br />bc1r.
<br />11? i? 1
<br />head
<br />frog;
<br />?•o?n t,
<br />inter
<br />L- lrl ??
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<br />rain 1
<br />the C
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