THE NAUTILUS. Vid 
EDITORIAL CORRESPONDENCE. 
Natchitoches, Louisiana. 
October 6, 1895. 
My first work was two miles below Mabelvale (12 miles southwest 
of Little Rock, Arkansas) along Fourche creek; an outcrop of 
Eocene limestone of the Midway or Clayton stage occurs here, con- 
taining Enelimatoceras ulrichi, Ostrea pulaskensis, Oucullea micro- 
donta, Cytherea sp., Venericardia planicosta, ete., etc. Most of the 
fossils consist of casts only, and are difficult to obtain from the hard 
limestone. The situation was very favorable for Jand shells, how- 
ever, and the heavy rain of the day before had caused the snails to 
start from their hiding places and I found them very abundant, 
crawling over the rocks and leaves. Helicina orbiculata, Polygyra 
thyroides var. bucculenta, Polygyra inflecta and large fine specimens 
of Zonites friabilis were particularly common, while a search brought 
to light Polygyra stenotrema, Polygyra divesta, Selenites concava, and 
Pyramidula alternata var. mordax. The whole bluffwas strewn with 
dead shells, and in turning over a log one of the enemies of the 
Helices was found, a large beetle of the genus Cychrus. 
At White Bluff on the Arkansas River, in Jefferson Co., Arkansas; 
is a bed of Upper Claiborne. The principal fossils collected were 
Venericardia planicosta, Nucula ovula, Cytherea discoidalis, Corbula 
nasuta, C. oniscus, Turritella arenicola var. branneri, Turritella 
clevelandia, Pseudoliva vetusta, Levifusus branneri, Volutilithes 
petrosus, Solarium bellastriatum, a fine series of Mazzalina inaurata, 
and many others, altogether probably 25 or 30 species. 
At Vince Bluff on the Saline River in Cleveland Co., Arkansas, is 
a small exposure of the Jackson bed from which about thirty species 
were obtained. The river was very low and in many places paved 
with Unios. As it was getting late, and a drive of eleven miles was 
before me I had very little time to collect ; but upon cleaning the 
“catch” next morning, found I had the following species: Unio 
pyramidatus, U. crassidens (?), U. trigonus, U. camelus, U. turgidus, 
U. pustulosus, U. near castaneus, U. plicatus, U. cornutus, U. metan- 
ever, U. trapezoides, U. securis, U. hydeanus, U. aberti, U. tubercula- 
tus U. near satur, U. gracilis, U. purpuratus. The first five species 
were abundant and many of the others would prove equally so with 
more thorough collecting. It is an ideal spot for a “ Uniologist.” 
Campeloma subsolidum Anth. and FPleurocera elevatum were also 
abundant, and among the former | find one specimen of Vivipara 
subpurpurea Say. 
