Mollusks

Shell of the Week: The Dubious Volute

Aurinia dubia (Broderip, 1827) is the largest volute (family Volutidae) species in the northwestern Atlantic Ocean, reaching 197 mm (about 7.8 inches) in length. The species has a relatively thin, tan-colored shell with sparse reddish-brown spots. The Dubious Volute can be found in relatively deep water, from 60 to 400 m (about 200 to 1,300 ft), from North Carolina south to both sides of Florida and the Gulf of Mexico.#auriniadubia #scaphelladubia #volutidae #drytortugas

Unraveling the True Identity of the Florida Cone

On May 30, 2024 I published with colleagues Greg Herbert, Bill Fenzan, Aaron Avery, and Federico Márquez, an article setting the record straight as to the true identity of the Florida Cone (Conus anabathrum Crosse, 1865), a common local species in Southwest Florida. The article wsa introduced at the last meeting of Florida United Malacologists (FUM) last April, on Sanibel.Download the open-access article here:https://academic.oup.com/mollus/article/90/2/eyae019/7684639 

Shell of the Week: The Warty Arene

Arene bairdii (Dall, 1889) is a small gastropod (up to 6 mm, or about ¼ inch) that belongs in the relatively small (in number of species) family Areneidae. The species has a pink-red shell with 5–7 rows of saw tooth-like projections. Arene species have a shelly, round operculum. This “Shell of the Week” is found from North Carolina south to northeastern Brazil. In the southern part of its range the species is found mostly in coral reef habitats. #arenebairdii #wartyarene #areneidae #cyclostreme

Matchless Moon Snails!

Have you checked the Lewis’s Moon Snails in the National Shell Museum & Aquarium’s Living Gallery? Neverita lewisii is one of the most impressive (and active) mollusks in our Cold-water Touch Pool. The Pacific Northwest species is the largest in the moon snail family Naticidae, with its shell reaching 14 cm (5.5 inches) in size. When out of its shell, the snail can uptake water to fill hollow spaces in the mantle and foot. This expands the size of the animal and creates a large plow-like structu

The Angel Wing and Its Siphons

Angel Wings (Cyrtopleura costata) live buried in sand or mud, inhabiting a cylindrical tunnel, which they occupy for the duration of their lives. Like most bivalve mollusks, Angel Wings are filter feeders, pulling water in through an incurrent siphon, pushing it through the gills, where the food particles are retained, then returning the water back to the environment via an excurrent siphon. The siphons are extensible, relatively long, and longitudinally fused. The incurrent siphon is wider than

Shell of the Week: The Tinted Cantharus

Gemophos tinctus is a relatively common gastropod around the islands of Southwest Florida, where it may be found living mostly on oyster reefs (photo on top). The shell in this species is thick and heavy for its size, with a reticulated (“criss-crossed”) sculpture and color pattern of diverse shades of brown and reddish brown. Tinted Cantharus are known to feed on the barnacles that thrive on oyster reefs, using their ribbon of teeth, the radula, to reach through the shelly barnacle carapaces. I

Shell of the Week: The King Venus

Lirophora paphia is a member of the venus clam family Veneridae that may reach 35 mm (about 1.4 inches) in length. Its shell valves are relatively thick and adorned with 10–15 prominent ridges. The shell color is white, often superimposed with a pattern of zigzag or triangular markings. The species is found from Florida south to Rio de Janeiro State in Brazil. #lirophorapaphia #chionepaphia #veneridae #kingclam #sombrerokey #floridakeys

Publicizing Digitization of Biodiversity Collections

This past weekend (April 20-21), Science Director and Curator Dr. José H. Leal attended the 2024 Northeast Natural History Conference in Albany, New York. José participated in a session titled “Frontiers in Marine Invertebrate Digitization”, organized by Drs. Liz Shea and Gary Rosenberg. The session was designed to promote the use of natural history collections by those working in environmental sciences, ecology, and biodiversity. The presenters are researchers involved in two National Science F

Shell of the Week: The Lightning Pitar

Reaching only about 48 mm (1.89 inches), Pitar fulminatus has an inflated shell, with a sculpture of crowded growth lines. Its color is white or chalky-white with yellowish-brown zigzag or lightning-like markings.  The Lightning Pitar is a member of the highly diverse family Veneridae, the venus clams. The species is found from North Carolina to both coasts of Florida, and Bermuda.#pitarfulminatus #lightiningpitar #veneridae #sanibel

The Gorgeous McGinty’s Cyphoma

On March 14, underwater photographer Ariane Dimitris took pictures of a couple of living Cyphoma mcginty off Pompano Beach, east coast of Florida.  To me, the McGinty Cyphoma is the most attractive among the several species of the genus Cyphoma found in the western Atlantic. I love the color pattern of its mantle (flap of skin that makes and covers the shell), with its round pink-gray spots. The photo above shows the anterior part of the snail with the siphon in the center (Thanks to Ariane for