NATURAL SCIENCES OF PHILADELPHIA. 155) 
Mesodon dentifera, Binn. 
Roémeri, Pfr. 
Wetherbyi, Bland. 
thyroides, Say. 
clausa, Say. 
Columbiana, Lea. 
Downieana, Bld. 
tLawi, Lewis. 
tjejuna, Say. 
Mobiliana, Lea. 
devia, Gld.°* 
profunda, Say. 
Sayli, Binn. 
Acanthinula harpa, Say. 
Vallonia pulchella, Mull. 
Fruticicola hispida, L. 
trufescens, Penn. 
Dorcasia Berlandieriana, Mor. 
griseola, Pfr. 
Aglaja fidelis, Gray. 
infumata, Gld. 
+Hillebrandi, Newe. 
Arionta arrosa, Gld. 
Townsendiana, Lea.” 
Cylindrella Poeyana, Pfr. 
jjejuna, Gld. 
+Macroceramus Kieneri, Pfr. 
Gossei, Pfr. 
+Bulimulus multilineatus, Say. 
+Dormani, W. G. B. 
Liguus fasciatus, Mull. 
Orthalicus zebra, Mull. 
tSuccinea Haydeni, W. G. B. 
tretusa, Lea. 
Sillimani, Bld. 
ovalis, Gld. not Say. 
*Higginsi, Bld. 
+Haleana, Lea. 
{+Mooresiana, Lea. 
tGrosvenori, Lea. 
+Wilsoni, Lea. 
+Concordialis, Gd. 
Arionta tudiculata, Binn. 
Nickliniana, Lea. 
Ayresiana, Newe. 
redimita, W. G. Binn. 
tintercisa, W. G. Binn. 
Kelletti, Fbs. 
Stearnsiana, Gabb. 
exarata, Pfr. 
ramentosa, Gld. 
+Californiensis, Lea. 
Carpenteri, Newe. 
¥Mormonun, Pfr. 
sequoicola, J. G. Cooper. 
Diabloensis, J. G. Cooper. 
Traski, Newce. 
*Dupetithouarsi, Desh. 
ruficincta, News. 
facta, Newe. 
{+Gabbi, Newce. 
Glyptostoma Newberryana, W. G. Binn. 
Euparypha Tryoni, Newe. 
Tachea hortensis, Mill. 
Pomatia aspersa, Mill. 
* 
*Bulimulus Marielinus, Pfr. 
tFloridanus, Pfr. 
tpatriarcha, W. G. B. 
alternatus, Say. 
*Schiedeanus, Pfr. 
dealbatus, Say. 
ORTHALICINA. 
Orthalicus undatus, Brug. 
Punctum minutissimum, Lea. 
SUCCININ A. 
tSuccinea luteola, Gld. 
lineata, W. G. Binn. 
avara, Say. 
Stretchiana, Bld. 
+Verilli, Bid. 
yaurea, Lea 
+Groénlandica, Beck. 
obliqua, Say. 
Totteniana, Lea. 
campestris, Say. 
! H. Mullani is a variety of this. 
® H. ptychoptora, Brown, is a variety of this. 
