Hello Linda,
Can't help you with the first species you mentioned but can help with the
second. I assume you have been looking for Acavus haemastoma in marine shell
books. Acavus is a landshell. If you have Compendium Of Landshells by R.
Tucker
Abbott, check out page 91, bottom row on the right side of page. The genus
Acavus is continued on page 92. Good Luck!
Bob Granda
Panama City, FL