NATURAL SCIENCES OF PHILADELPHIA. 



Ifi5 



Mesodon dentifera, Binn. 

 Roemeri, Pfr. 

 Wetherbyi, Bland, 

 thyroides, Say. 

 clausa, Say. 

 Columbiana, Lea. 

 Downieana, Bid. 

 fLawi, Lewis, 

 tjejuna, Say. 

 Mobiliana, Lea. 

 devia, Grid. 1 

 profunda, Say. 

 Sayii, Binn. 

 Acantliinula harpa, Say. 

 Vallonia pulcbella, Mull. 

 Fruticicola hispida, L. 



trufescens, Penn. 

 Dorcasia Berlandieriana, Mor. 



griseola, Pfr. 

 Aglaja fidelis, Gray, 

 infumata, Gld. 

 tHillebrandi, Newc. 

 Arionta arrosa, Gld. 



Townsendiana, Lea." 



Ariouta tudiculata, Binn. 

 Nickliniana, Lea. 

 Ayresiana, Newc. 

 redimita, W. G. Binn. 

 fintercisa, W. G. Binn. 

 Kelletti, Fbs. 

 Stearnsiana, Gabb. 

 exarata, Pfr. 

 ramentosa, Gld. 

 f Californiensis, Lea. 

 Carpenteri, Newc. 

 tMormonum, Pfr. 

 sequoicola, J. G. Cooper. 

 Diabloensis, J. G. Cooper. 

 Traski, Newc. 

 tDupetithouarsi, Desh. 

 ruficineta, Newc. 

 facta, Newc. 

 fGabbi, Newc. 

 Glyptostoma Newberryana, W. G. Binn. 

 Euparypha Tryoni, Newc. 

 Tachea hortensis, Miill. 

 Pomatia aspersa, Mull. 



Cylindrella Poeyana, Pfr. 



tjejuna, Gld. 

 tMacroceramus Kieneri, Pfr. 



Gossei, Pfr. 

 IBulimulus multilineatus, Say. 



tDormani, W. G. B. 



Liguus fasciatus, Mull. 

 Orthalicus zebra, Mull. 



IBulimulus Marielinus, Pfr. 

 + Floridanus, Pfr. 

 fpatriarcha, W. G. B. 

 alternatus, Say. 

 tScbiedeanus, Pfr. 

 dealhatus. Say. 



Orthalicinje. 



Ortbalicus undatus, Brug. 

 Punctum minutissimum, Lea. 



SuCCININiE. 



tSuccinea Haydeni, W. G. B. 

 tretusa, Lea. 



Sillimani, Bid. 



ovalis, Gld. not Say. 

 tHigginsi, Bid. 

 tHaleana, Lea. 

 tMooresiana, Lea. 

 tGrosvenori, Lea. 

 tWilsoni, Lea. 

 tConcordialis, Gld. 



tSuccinea luteola, Gld. 



lineata, W. G. Binn. 

 avara, Say. 

 Stretchiana, Bid. 

 tVerilli, Bid. 

 taurea, Lea 

 tGroenlandica, Beck, 

 obliqua, Say. 

 Totteniana, Lea. 

 campestris, Say. 



1 H. Mullani is a variety of this. 



9 H. ptychoptora, Brown, is a variety of this. 



