— 
-I 
BULLETIN OF THE BUREAU OF FISHERTES. 
19. Rutilus bicolor (Girard). 
Several specimens from the Klamath River, near its mouth, were ‘lighter in color but differed in 
no other way from examples taken in the Shasta River, near Yreka and Montague, 
Klamath River, 
20. Rhinichthys dulcis (Girard). “ 
Apparently rare, One specimen was taken in the Willamette at Eugene and another near 
Corvallis, 
21. Rhinichthys evermanni, new species. 
This species is characterised by a narrow head, long snout, slender caudal peduncle, elongate fins, 
tho anal being somewhat faleate, and by having 9 rays in the dorsal. From Rhinichthys dulets (Girard) 
it may be distinguished by its slender caudal peduncle, elongate fins, more prominent snout, larger 
sealos, and more numerous dorsal rays. 
Hoad 8.8 in length to base of caudal ting depth 4.25; eye 5,7 in head; snout 2.1; interorbital space 4; 
depth of caudal pedunele $8.25; dorsal rays 9; anal 7; scales in lateral line 61; above lateral line 12; between 
occiput and origin of dorsal $4. 
Deopest part of body at origin of ventrals, the width about 1.5 the depth. Head long, the snout 
obtusely pointed; eye located slightly posterior to middle of head; interorbital space convex. Mouth 
inferior, the snout projecting a distance equal to diameter of eye; lips very thick, the upper with a broad 
Fre, 4.—Rhinicehthys evermanni, new species. Type. 
phrenum; maxillary with a barbel attached to its posterior edge, equal in length to diameter of pupil, 
the barbel inconspicuouson account of the broad, rather pendulous lip; width of mouth equal to width 
of space between the eyes. Gillakers minute, 4 or 5 on first arch, Teeth 2-4, 4-2, long and slender, 
without grinding surface; the two posterior or upper teeth hooked, the others rather blunt, Peritoneum 
silvery; intestinal canal short, its length about equal to distance between snout and base of caudal, 
Lateral line slightly decurved near its origin, nearly straight throughout the remainder of its length, 
Origin of dorsal midway between pupil and base of caudal; free edge of fin slightly concave; when 
depressed the tips of first dorsal rays fall a little short of the last. Origin of anal below last ray of dorsal; 
when depressed the first rays fall considerably beyond tips of the last ones; in some individuals the first 
rays are more elongate, the free edge of the fin being deeply concave, Ventrals reaching base of third 
anal ray. Dorsal and ventrals located a little farther posteriorly than is usual in R. dulcis, Peetorals 
and ventrals sharply rounded, Caudal deeply notched, the lobes pointed. 
Color in alcohol brownish, very finely stippled with black especially on edges of scales; an indefi- 
nite dark band extending from near tip of snout to eye; a similar indistinct band along side of body. 
Young examples have a conspicuous dark band about as wide as pupil extending forward from eye, and 
a somewhat broader, less prominent band running backward from operele, broadening on posterior end 
of caudal peduncle, contracting on base of caudal, where it ends in a small, distinct spot, 
Type no, 61572, U.S. National Museum, from South Umpqua River, Roseburg, Oreg. Length 107 
mm. Collected by Frank Cramer and K. Otaki. Cotype no. 9864, Stanford University. Specimens 
were taken only in the type locality. 
In his field notes Mr, Cramer mentions that the species was taken in shallow, rapid water, the river 
being high and muddy at the time. Other collectors have not succeeded in finding it. 
