62 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Tcho tberelbre placed the genus in llKclsonius. Orbit almost circular (7 mm.), m snout,. 
5|in bead. Teeth 4, 4, hooked, one or more grooved; grinding sm'faces narrow. Teeth in 
very large specimens more blunt. Color, olive above; sides pale; belly white; sides slightly 
silvered to fourth row of scales above lateral line, which is slightly decurved; cheeks and 
oi>ercles silvery and without striations; fins all light and plain; 18 scales before dorsal. 
The measurement of a few medium-sized specimens are as follows : 
Length. 
Head. 
I>eT)th. 
Lateral 
line. 
Dorsal. 
Anal. 
mm. 
112 
inm-. 
2S 
mm. 
31 
42 
8 
8 
88 
25 
25 
48 
8 
8 
C6 
25-f- 
24 
44 
8 
8 
95 
24 -h 
24 
45 
8 
8 
90 
26— 
25 
48 
8 
8 
97 
26- 
23 
48 
8 
8 
90 
24— 
24 
45 
8 
8 
8S 
21— 
22 
40 
8 
8 
This is one of the largest minnows and is about the only food-fish taken fr . this stream 
exceiit Ameiurus diigesi. It is abundant and reaches a length of 1.5 inches. It is caught in 
nets or by hook and line, preferring worms or other dead bait. The fish is commonly known 
to the natives as “whiteflsh.” 
6. G-ambusia infans, sp. nov. This little Gamhusla bears but a slight general resemblance to other 
species of the genus. The color is light (due in large part, no doubt, to the muddy water), 
excejit the back, which is .a light oliA'e-green ; but few scales have dark edges or other mark- 
ing except a very narrow hair line along the middle of the caudal xioduucle from the dorsal 
to end of scales; and another line of about equal length and breadth, but more distinct, 
which extends along the lower edge of the caudal peduncle from the last rays of the anal to 
the caudal hu. The total length of the largest specimen is 37 mm. ; length, exclusive of 
caudal fin, 32 mm. ; head, 7 mm. ; depth, 7 mm. ; first rays of dorsal midway between snout 
and end of caudal, or midway between the posterior margin of opercle and end of scales; 
insertion of anal in male almost directly beneath first rays of dorsal; base of dorsal very 
short, slightly more than length of orbit; diameter of orbit a little greater than length of 
snout, about 25 in head ; modified anal of males about 14 times length of head, or about 
equal the distance from insertion of dorsal to end of scales. Ventral fin short, not reaching 
vent. D. 8, A. 1-8; scales, 26. 
7. Cliaracodon variatus Bean. Specimens collected by the writer agree with the original description 
of this species by Dr. Bean (Proo. U. S. Nat. Mus. 1887, 370), except in length of head, color, 
and x")rofilc of body. The color is light olive-green and plain throughout, excex>t faint traces 
of a lateral band on caudal peduncle; no dark spots appearing on either body or fins. The 
head is 4 in body, exclusive of caudal fins. In the type of Cliaracodon variatus the head is 
given as 4 in body, including the caudal fin. The nape in specimens that I collected is 
depressed instead of elevated, as shown in the cut of Cliaracodon variatus accompanying the 
original description. In this cut the dorsal is also placed nearer the caudal than it is in my 
specimens. Numerous other specimens collected by me agree almost perfectly with the 
original description of Cliaracodon ferruyineus Bean (Proc. U. S. Nat. Mus. 1887, 373, plate 
x.x). The largest of iny specimens measured as follows: Length, exclusive of caudal fin, 
46 mm.; head, 13^ mm. ; depth, 15 mm. ; scales, 29; in type, 35. Dr. Bean has since referred 
this species to the synonymy of the preceding, the differences being a matter of age and sex. 
I am not able, howev^er, from an examination of my specimens, to arrive at this conclusion. 
8. Chirostoma jordani, sji. nov. Body elongate, slender, comiiressed; head medium, conical; mouth 
very oblique; upper premaxillarj' protractile but not produced; maxillary not reaching 
eye; first rays of anterior dorsal ov^er posterior end of ventrals and slightly in advance of 
the insertion of the anal; first rays of second dorsal over middle of anal, tlie rays when 
depressed reaching as far toward caudal as the rays of anal ; length of base of second dorsal 
about half that of base of anal, or equal the distance from snout to posterior edge of orbit; 
longest rays of second dorsal slightly exceed in length longest rays of anal or about equal 
the greatest depth, and about one-fourth greater than the length of the base. Pectoral fins 
