MOLLUSCAN FAUNA FROM DELAND- 
JI 5 
Pelecypoda 
U 
L 
M 
P 
PI 
R 
w 
c 
Mulinia contracta Conrad _ 
X 
p 
? 
? 
? 
Nucula proxima var. trunculus Dali __ 
_x 
X 
X 
X 
X 
X 
X 
Ostrea sculpturata Conrad __ 
_x 
X 
X 
X 
X 
Ostrea virginica Gmelin _ _ _ _ 
X 
? 
X 
X 
X 
X 
X 
Ostrea (yo.) 
X 
Pecten eboreus var. solaroides Heilp 
_X 
p 
X 
X 
Pecten eboreus Conrad ? 
Pecten (yo.) : 
_x 
X 
Phacoides multilineatus Tuomey & Holmes _ 
X 
X 
X 
X 
X 
X 
X 
X 
Phacoides radians Conrad var. ? 
_x 
X 
X 
X 
X 
X 
X 
Phacoides waccamawensis Dali, n. subsp. delandensis 
Mansfield __ _ __ _ 
X 
p 
p 
Plicatula sp. (yo.) _ 
X 
Tellina (Angulus) declivis Conrad 
_x 
X 
X 
X 
X 
Transennella near Stimpsoni Dali _ 
X 
Venericardia perplana Conrad - 
_x 
X 
X 
X 
X 
X 
X 
V. perplana cf. var. abbreviata Conrad 
X 
Venericardia tridentata Say 
X 
X 
X 
X 
X 
X 
X 
X 
Venericardia sp. (eroded) 
X 
Venericardia sp. (yo.) _ 
X 
Venus rileyi Conrad 
-X 
X 
X 
p 
X 
X 
Venus sp. (frag.) 
_X 
Miscellaneous 
Balanus sp. — 
_x 
X 
Crab chela 
X 
Echinid spines _ — — _ — — _ _ 
_x 
X 
Membranipora cf. lacroixii (1.) 
-X 
Myliobatis sp. (2.) 
_x 
X 
X 
Septastrea crassa Holmes (3.) 
_x 
X 
X 
X 
X 
79 34 36 44 31 29 39 38 
(1.) Determined by Dr. R. S. Bassler. 
(2.) Determined by Dr. J. W. Gidley, with age probably Miocene. 
(3.) Determined by Dr. T. W. Vaughan, with age upper Miocene or Plio- 
cene. 
COMPARISON OF THE FAUNA IN THE UPPER AND LOWER MARL BEDS. 
The forms in the lower bed are more weathered and poorly pre- 
served than in the upper. 
Fifteen identified species, including varieties, are common to 
both. Divaricella quadrisulcata d’Orbignyy an unreported Florida 
Pliocene species, is found only in the upper bed. As there appear 
to be no varietal distinctions in the species of the two beds, no geo- 
