this is the info i found, i have not seen any thing about them being poisons to touch
Banded Tulip
Fasciolaria hunteria Common in shallow grassy bays. Harder to find along the beach as it likes the grass flats that are in the bay. Up to 3"
a small predatory snail that feeds on clams. The highly polished shell has a marbelized pattern of grey, brown, and white with distinct purple-brown spiral bands. Females will lay eggs in an aquarium in vase shaped horny capsules. Male is said to eject water, setting up vibrations, to attract a mate. Size: 5-7 cm.