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Related Articles: Abalone, Opisthobranchs (Sea Slugs), Nudibranchs, Mollusks, Algae Control, Nutrient Control and Export, 

/The Conscientious Marine Aquarist

The Stomach-Footed Mollusks, Class Gastropoda, Subclass Prosobranchia, Part 4

To:  Part 1, Part 2, Part 3, Part 5, Part 6, Part 7 :

 

by Bob Fenner

 

New Print and eBook on Amazon

Marine Aquarium Algae Control

by Robert (Bob) Fenner

Superfamily Heteropoda: Pelagic species with a finlike foot and reduced shells. Atlanta, Carinaria. 

Superfamily Hipponicacea: Families Family Hipponicidae" Troschel,1861 Details Boss, in Parker,1982:1003; Family Fossaridae Details Boss, in Parker,1982:1004; Family Vanikoridae {Gray,1845} Details Boss, in Parker,1982:1004; Family Caledoniellidae

Family Hipponicidae: Hoof Shells. Attach limpet-like to the substrate and don't move. Unlike true limpets (family Patellidae) these snails show spiral growth in their shells. Four Hawaiian species. 

Hipponix imbricatus Gould 1846. Shingly Hoof Shell. At times very abundant on the outsides of smooth boulders. Shallows to about fifty feet of depth. May be endemic to Hawai'i. To about half an inch in diameter. 

Superfamily Tonnacea. Heavy marine snails. The Helmet Shells: Cassis, Cassidarius. Bonnets: Phalium. Tritons: Cymatium. Tuns: Tonna

Superfamily Naticacea: Moon Shells. Burrowing species with globose shells and a drilling mechanism. Natica, Polinices. 

Family Cassididae: Helmuts. Typically of globular shells with short spires and apex whorls, and a vertical groove which the animals siphon protrudes. Feed almost exclusively on urchins. 

Cassis cornuta (Linnaeus 1758), the Horned Helmut. One of four species found in Hawai'i. Common in shallow sandy environments. Found buried in sand with only whorls in evidence. Largest Hawaiian Helmut (to 15"); used as a "blow horn" by natives in shows. Some authors believe specimens with fewer, higher horns are males, shorter, more numerous females. Kona pix. 


Cassis flammea, the Flame Helmet. Helmet shaped shell, with thick outer lip banded in seven or eight dark stripes. Feed at night on sea urchins... overtaking and consuming them spines and all. Bahamas pic. 

To:  Part 1, Part 2, Part 3, Part 5, Part 6, Part 7 :

New Print and eBook on Amazon

Marine Aquarium Algae Control

by Robert (Bob) Fenner

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