Common Name: Knobby Snail.
Location: M. tectum occurs throughout the Indo-West Pacific (Kay, 1979).
Habitat: These mollusks are common in sand or algal-sand mats in tide pools and on benches, and have been dredged from depths of 100 m (Kay, 1979).
Remarks: The shells are often covered with heavy growths of algae (Kay, 1979).
References: Kay, 1979: 113-114; Morris, 1966: 223.