CHIAPAS, TABASCO, AND PENINSULA OF YUCATAN 945 



Anomia simplex, (?) 

 A. Puffi?n ? 

 Plicatiila filamcjitosa, 

 Lucimi reticulata, 

 Area A dam St 

 Venus mercettaria, 

 Venus eattcellata, 

 Margijiella apicina, 



* Turritclla peratenuata, 



* Tiirritella apicalis. 

 Bulla striata, 



* A m usiioii Mortojt i, 

 Cardiian isocardia, 

 Venus Lister i, 

 Pecten sp. ? 

 Pinna sp. ? 

 Lucina Jamaicensis, 

 Lucina edentula, 

 Cardium Magnum ? 

 Cardium jnuricatum, 

 Murex Salleaims, 



* Ostrea meridiojialis, 

 Area Deshayesii, 

 *Area sp., 



Area rombea, 

 * Pectuncidus sp., 

 Lucina tigrina 



* Lucina disciformis, 

 Lucina Pennsylvanica, 

 Cardiuvi serratum. 

 Chama atcinella, 

 Venus Mortoni, 

 Artemis discus, 

 Macoma contracta, 

 Tellitia sp., 



* Fulgtir rapum, 

 Dolium perdix, 

 Oliva literata, 

 Cyprcea sp., 

 Pyrula reticularis, 

 Siliquaria sp. 



Tekanto. 



Tekanto, Merida, between Merida and Ticul. 



Izamal, Merida. 

 Merida. 



Between Merida and Ticul. 



Merida. 



Between Merida and Ticul. 



Mdrida. 



* Not living in neighboring seas. 



