- The images shown in Mystery Shells No. 18, 'Himalayas in Nepal'
by Mr. Richard are the columella of the present day living species
Turbinella pyrum L. popularly known as 'Indian Sacred Conch'.
There are many varieties in the species Turbinella purum L.
from different localities. The Columella is screw type and shows presence
of total four plaits. In the present pictures, columella shows three
major plaits however, the fourth plait is little thin and slanting
in nature. Columella of this type is a typical character of the present
day ecotype of Turbinella pyrum L. from Rameshwaram region
near 'Adam's Bridge' between India and Sri Lanka
I am from the Pune city of India.
Thanking you and with best wishes, ...Chandrashekhar .