BULLETIN FLORIDA STATE MUSEUM


the turbid Arkansas River may be explained by the presence of springs
in the river bed (Hubbs and Moore, 1940: 94).
 Moore and Paden (1950: 92) published the following observations
of spawnitig behavior in "N. zonatus pilsbryi" in the Illinois River
system in Oklahoma, together with an account of possible hybridiza-
tion with Dionda nubila:
 "May 3, 1947, was one of those beautiful balmy spring days (air
temperature 22'C., water 200C.) with a perfectly clear sky and no
wind. As we approached a long stretch of riffle, shortly after mid-
day, a considerable area of water appeared to reflect a beautiful
crimson. Approaching closer, to about 20 feet, a most unusual sight
greeted our eyes. An area of about 10 by 6 feet in gently flowing
water about 1 or 11/ inches deep was occupied by thousands of male
zonatus lying so close to each other that it seemed there was no room
for more. They were so beautiful that the eye at first failed to detect
the occasional less brilliant female, and surely there were not very
many lying between the males. Their activities made the surface
of the water quite rough and so the whole process of spawning
escaped us. The males were rolling from side to side so that their
brilliant crimson underparts made the water appear to be on fire.
When we stepped into the riffle the minnows scattered. By means
of a screen we were able to collect eggs, presumed to be of this
species, from the redd.
 "Below the riffles occupied by Notropis zonatus was a deeper
area (about 2 by 21/2 feet) from which our seines took a considerable
number of Dionda in breeding color. No evidence of the spawning
of the Ozark minnow was obtained but it seems quite possible that
spermatozoa of Notropis zonatus could be carried by the current into
the spawning area of Dionda nubila where they might fertilize the
eggs of that species."

 Notropis cerasinus (Cope)

 Crescent Shiner, figures 7, 14C, map 3.
Hypsilepis cornutus cerasinus Cope, 1867: 159 (original description; type locality
 headwaters of Roanoke River, Virginia).
 Minnilus cornutus cerasinus, Jordan and Gilbert, 1883: 187 (description;
 range).
 Notropis megalops cerasinus, Jordan, 1889b: 121-123 (description; compari-
 son with N. megalops albeolus; abundant in Roanoke River system).
 Notropis cerasinus, Jordan and Evermann, 1896a: 256 (range; Synonymy).
 Notropis cornutus cerasinus, Fowler, 1910: 284, pl. 18, fig. 31 (comparisons;
 status; types in ANSP).


Vol. 8