58 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
way between snout ami fork of caudal ; ventrals midway Imtween snout and base of caudal; 
lateral line decnm^ed, parallel with line of belly, and followed about 1 min. above by a 
narrow dark lateral stripe that ends in a dark caudal spot. Teeth, 1, 4-4, 1 in one specimen 
examined, but this siiecies is said to have a very variable dentition. 
Lengtli. 
Head. 
Heptli . 
Eye. 
i Lateral 
' liue. 
mm. 
7nm. 
mm. 
mm. 
68 
20 
17 
4-5 
1 65 
67 
19 
17 
4-5 
i 66 
59 
17 
15 
4-1- 
1 65 
1 
5. Notropis oniatiis (Girard). Abundant. Body very deep ; head short and blunt; mouth terminal, 
slightly oblique; snout profusely tubercled; scales much deeper than long, very much as 
in Notropis corniUus ; color smoky brown above, shading to lighter below lateral line; 
body with a distinct lateral stripe from the upper jiosterior margin of the opercle to the 
caudal; this is often faint or even obliterated on the anterior part of the body, but always 
distinct on the caudal peduncle. The body is barred with eight or ten dark vertical bars 
that extend from near the upper part of the body to below the lateral line. The fins are all 
dusky; dorsal, anal, and caudal, each with a dark bar near the outer margin; fins short; 
the base of the dorsal about one-half length of head; longest rays, from snout to opercle, 
little longer than the rays of the anal. Insertion of first rays of dorsal midway between 
anterior orbit and base of caudal, slightly behind veutrals, which are about midway 
between base of caudal and snout. The measurements of six adult specimens were: 
Leugtb. 
Head . 
Deptli. 
Lateral 
line. 
Dorsal. 
Anal. 
mm. 
mm. 
m)n. 
56 
14 -5 
20 
37 
8 
8 
55 
14-5 
20— 
37 
8 
8 
55 
15-5 
20— 
38 
9 
8 
58 
J5 ’0 
21 
38 
8 
8 
55 
11 -5 
20 
37 
. 8 
8 
59 
15-0 
19-t 
38 
8 
8 
6. Notropis lutrensis (Baird & Girard). Color (of males especially) very bright; back light olive; 
sides light blue, covered with white pigment ; belly white; a dark or steel blue vertical bar 
(width of eye) just back of the opercle; head i)rofusely tirbercled, principally in three longi- 
tudinal rows; a few of the females contained eggs. Head in body, 4; de])th in body, 3-)-. 
1 Length. 
1 
Head. 
Depth. 
Lateral 
line. 
Dorsal 
raj’S. 
Anal 
rays. 
mm. 
mm. 
mm 
53 
13 
18 
35 
8 
8 
52 
13 
17 
36 
8 
8 
46 
11 -5 
15 
35 
8 
8 
7. Notropis chihuahua 'Woolman. (Amer. Nat., vol. xxvi, 260, March, 1892.) 
Body elongate, back but slightly elevated, rising gradually from snout to front of 
dorsal; head large; snout blunt, somewhat decurved ; mouth medium, terminal almost hori- 
zontal; maxillary scarcely reaching front of eye; eye large, nearly 4 in head, longer than 
snout, but not quite equal iuterorbital space; anterior part of dorsal midway between snout 
and caudal; scales deeper than long, not crowded anteriorly ; lateral line almost straight, 
and complete. Color light-olive or brown above; edges of scales above the lateral line 
sprinkled with irregularly placed, small, dark-brown dots; vertebral line iiresent, but not 
conspicuous; sides of body with a plumbeous lateral stripe of about the width of the eye; 
