AMPULLARIA leucostoma,
White-mouthed Apple Snail.
Generic Character.—See Pl. 98.
Specific Character.
A testâ ovatâ, rugosâ, epidermide olivaceo-fuscâ; labio exteriore tenui; aperturâ albâ; umbilico vix clauso.
Shell oval, wrinkled; epidermis olive-brown; outer lip thin; aperture white; umbilicus nearly closed.