Dear All,
I acknowledge the helps that I have got from several persons regarding the
author name and year of description of some species.
May I take further previlage to request further for the same job of the
following species:

Argobuccinum australasiae Perry
Crucibulum auriculatum Gmelin
Terebralia telescopium L
Potamides cingulatus (Gmelin)
Turritella javana Lamarck
Pila virens (Lamark)
Bithynia stenothyroides Dohrn
Bulla ficus

With regards
Dr. Bidhan ch. Das
Professor
Dept. of Zoology, University of Rajshahi,
Rajshahi-6205, Bangladesh