PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 509 
Fin-rays as follows: D. I, 8; A.I, 10-11. Dorsal beginning midway 
between the muzzle and fhe base of the caudal; its length one-half, its 
height two-thirds, the head. Anal in length three- fifths, in height fone 
fifths, the head. Caudal peduncle compressed, and eeteiadd in the 
length of the body 44 times. 
- The body is of a straw-color above, silvery along the sides and below. 
The scales above the lateral line are dark-edged from a succession of 
black dots, which are large enough to be seen by the unaided eye. A 
dark dorsal line of similar, but a little larger, black points. Along the 
sides anteriorly are a few such dots; posteriorly they increase so much 
that on the caudal peduncle they form a dark band. The head, and 
especially the snout, are sprinkled with similar dots. There is a black 
spet at the base of the dorsal fin anteriorly. Opercles silvery. Size of 
largest specimens 2 inches. Corinth. 
This minnow resembles somewhat Notropis lirus, Jord., but is a less 
slender species, has a smaller eye, and has not the conspicuous band of 
metallic blue of that species. Notropis matutinus (Cope) Jord., also ap- 
pears to be a much slenderer species, the depth being contained in the 
length 6 times. Also there are said to be but 7 rows of scales above 
the lateral line. 
I do not think that there are sufficient differences in the teeth of the 
species of Notropis, or Minnilus, and those of Lythrurus to justify the 
separation of these species into two genera. If there is such difference, 
Notropis lirus ought to be written Lythrurus lirus, for the masticatory 
surfaces of its teeth are as plain, to me at least, as in L. diplemius. 
40. Minnilus rubripinnis, Hay, sp. noy. (No. 27,420.) 
Body long and slender, somewhat compressed, the depth in the length 
42 times. Head arched transversely above; muzzle very pointed. 
Mouth oblique, large; the lower jaw slightly longer than the upper; 
the maxillary reaching to a vertical from the front of the eye. The eye 
is large, being contained in the length of the side of the head 3 times, 
and its diameter slightly greater than the snout. Head contained in 
the length 4$ times. 
Seales small, especially in front of the dorsal fin, somewhat higher 
than long, but not so densely imbricated as in the next species. ows 
of scales represented by the formula 7 to 9-454.-3. Lateral line much 
decurved anteriorly. 
The dorsal is situated far back, midway between the pupil of the eye 
and the base of the caudal, and considerably posterior to the ventrals ; 
its rays, I, 8; its length one-half the head, its height three-fourths. 
The anal is long, being three-fourths the length of the head, height one- 
half the head; its rays, I, 12. 
The pectorals do not reach the ventrals; the latter attain the vent. 
The coloration of this species is dark in spirits, all the scales above 
the lateral line being covered with black points. Along the sides is a 
