i) Ane 
Lamellaxis gracilis (Hutton) 
Plate II, A 
This species is similar to both L, clavulinus and L, mauritianus but can 
be distinguished from them by its heavier transverse striations and dull 
surface. 
Distribution: Tropics of both hemispheres in cultivated regions. Intro- 
duced into the southeastern United States. 
Lamellaxis micra (Orbigny) 

Plate wie) 
This snail differs from other species of Lamellaxis and Opeas by having 
widely spaced transverse ribs, a bullet-shaped spire, smaller aperture 
(less than 1/4 the shell height), and shorter whorls. 
. Distribution: West Indies, Mexico to Bolivia. Introduced into Florida. 
Subulina octona (Bruguiere) 
Plate Hane 
Shell similar to Opeas and Lamellaxis, except that it is larger, perforate, 
and the columella is truncate. Shells (with 10 whorls) measure about 18 
mm. Surface glossy, irregularly wrinkle-striate; sutures impressed; 
aperture small, oval, slightly lunate. 
Distribution: Tropical America. Introduced into Africa, Ceylon, East 
Indies, Florida, It is occasionally reported from greenhouses in the 
Northern States. 
Rumina decollata (Linnaeus) 
Plater ler kk 
Shell large, perforate, glossy, sculptured with fine spiral striae; whorls 
only slightly rounded, sutures not impressed; columella straight, its lip 
margin reflexed; lip solid, but not reflected. The most obvious character- 
istic of the shell is its decollate, or broken off spire. In adult shells only 
4-7 whorls remain, the other 8 to 10 having been lost by successive break- 
ages. Adult decollate shells measure 25 to 45 mm. 
Distribution; Mediterranean region of Europe, Asia, and Africa. Intro- 
duced in many of the southern United States. 
