National Geographic : 1955 Mar
432 c. 1.. Lane Scotch Bonnet: an Artist's Daydream in Blown Glass This snail is found in the western Atlantic from Cape Hatteras to the West Indies. Scotch Bonnet is well known to collectors, who easily identify it by a regular plaidlike arrangement of light-brown squarish spots on a pale-yellow or pinkish background, and by deeply sculptured grooves. The shell's wide mouth harbors an energetic animal that crawls in the mud seeking bivalve dinners. This miniature helmet shell, shown three times life size, has a lip heavily thickened and corrugated for strength. Its twisted geometry casts an interweaving pattern of X-ray shadows.