84 MOLLUSCA IN THE MaYA LoWLANDS 



Pl. 1 1 — MISCELLANEOUS LARGE GASTROPODS 



a. Cassis tuberosa Linne, immature specimen (Q— 504). 



b. Fasciolaria ttilipa Linne, unusually large, specimens average less than half this size (Q— 500). 



c. Vasum miiricatiim Born (Q— 504). 



d. Pleuroploca gigaiitea Kiener, half -grown specimen (Q— 500). 



e. Turbinella angulata Solander, half-grown specimen (Q— 500). 



(Scale 1/2) 



