This is the family Cypraea
Cypraeidae

Bistolida Hirundo neglecta 19.34mm."Samar Island, Philippines" LOT#901324
Max: 1

Callistocypraea nivosa 1 5/8” or 39.11mm "Burma" LOT#901327
Max: 1

Chelycypraea testudinaria 4 ¾” or 117.77mm."Quite Large" LOT#901233
Max: 1

Cribrarula catholicorum 17.17mm "Solomon Islands LOT#901276
Max: 1

Cribrarula cribellum 14.71mm."Reunion Island" LOT#901271
Max: 1

Cribrarula cribraria 22.13mm " Superb Rostrate & Niger" LOT#901317
Max: 1

Cypraea coloba f. greegori 26.95mm. Thailand Lot#901201
Max: 1

Cypraea pantherina 2 ¾” or 67.86mm. Chestnut/Rusty LOT#901243
Max: 1

Erronea caurica dracaena corrosa 1 ½” or 35.38mm."india" LOT#901322
Max: 1

Erronea rabaulensis 22.88mm."Large" Lot#901219
Max: 1