MOLLUSCAN FAUNA FROM DELAND- 
1 13 
top surface, and the most pronounced break in the section is that be- 
tween this marl and the. overlying sandy clay.” 
“Stratum No. 4 of the section is lacking in constancy. In 
places it is chiefly clay, although elsewhere it becomes quite sandy. 
At the time the first section was made in this pit no fossils were 
found at this level, although in March, 1915, the stratum as then 
exposed was found to contain in places 'oyster shell marl. 
“The collections made in 1908 were, from the shell marl, No. 1, 
and from the marl No. 3. A feature of some interest in these pits 
is the existence of sinkholes encountered in mining, of which there 
is no indication at the surface. One of these at the north side of the 
pit is 6 or 7 feet in diameter and breaks through both marl strata, 
its depth being unknown.” 
The following list gives the fauna from the upper (No. 3 of 
section) and lower (No. 1 of section) beds at the marl pit about 
one mile south of DeLand, Volusia county, Florida, with the. geo- 
logic range of species and their occurrence in the Waccamaw and 
Caloosahatchee marls : 
U — upper bed; L — lower bed; M— Miocene; P — Pliocene; PI. 
—Pleistocene; R — Recent; W — Waccamaw marl; C — Caloosahat- 
chee marl. 
Gastropoda U L 
Actaeon punctostriatus Adams x 
Anachis obesa C. B. Adams, var. ? x x 
Bulla ? (frag.) . x 
Conomitra (yo.) . x 
Crepidula aculeata var. costata Morton x 
Crepidula convexa Say - __x 
Crepidula cf. convexa Say x 
Crepidula fornicata Say x 
Crepidula fornicata Say, cf. var. rostrata Conrad x 
Crucibulum sp. (yo.) x 
Drillia tuberculata Emmons x 
Drillia cf. tuberculata Emmons x 
Epitonium sp. A, aff. Krebsii Moerch x 
Epitonium sp. B, aff. lineata Say x 
Epitonium delandense n. sp. Mansfield x 
Fasciolaria apicina Dali — x 
Fissuridea carolinensis Conrad x 
Busycon perversum Linnaeus x 
Mangilia cerina Kurtz & Stimpson x 
Marginella near bella Conrad x 
M P PI R W C 
X X X X X 
X X X X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X X X X X X 
XX X ? 
X XX 
XX ? X 
X X X X X X 
X X X X X 
8 
