Thaumastus flori
Thaumastus flori is a species of  tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Megaspiridae. Distribution 
 southern Ecuador. The type locality is Machala. Peru

Description 
Variability of shells:

See also 
 Thaumastus hartwegi (Pfeiffer, 1846) is a species with a similar shell. References

Megaspiridae
Gastropods described in 1897