Help Identifying Shells for film project

[angus.benger]

Hi All,

My Name is Angus, I work for a film studio in New Zealand and we have bought a bunch of shells as reference for a project we are working on. Unfortunately, on their way to us they have been seized at customs, and unless we can provide the customs officials with a list of the scientific names of the shells in question, they cannot release them to us and the shells will likely be destroyed. I was hoping I might find some help identifying them on this forum - I have included a link to an image from the seller - any help or advice would be greatly appreciated!

Link:
http://postimg.org/image/466i46wkf/

Kind Regards,

Angus