I04 MOLLUSCA IN THE MaYA LoWLANDS 



Pl. 2 1 — MISCELLANEOUS GASTROPODS AND PELECYPODS 

 aa. Diodora listeri d'Orbigny (1569). 



b. Mitra florida Gould (Q-501), bb (7594). 



c. Pecten laurenti GmeVm (Q— 504), cc {6434). 

 dd. Murex rubidus Baker (6572). 



ee. Modulus modulus Linne (6460). 



f£. Bulla occidentalis C. B. Adams (1502). 



g. Nephronaias aff. calamitarum Morelet (M— 720). 



h. Pomacea flagellata arata Crosse and Fischer. 



(Actual size) 



I 



