Titiscania

Titiscania is a genus of slug-like sea snails, shell-less marine gastropod mollusks in the superfamily Neritopsoidea.^[2][3]

Titiscania
Titiscania
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Neritimorpha clade Cycloneritimorpha
Superfamily:	Neritopsoidea
Family:	Titiscaniidae Bergh, 1890[1]
Genus:	Titiscania Bergh, 1890[1]
Type species
Titiscania limacina Bergh, 1890

Titiscania is the type genus^[2] and also the only genus in the family Titiscaniidae.

The original vernacular spelling "Die Titiscanien" by Rudolph Bergh (1890)^[1] was Latinized by Johannes Thiele in 1891.^[2]

Excepting some parasitic forms, Titiscania is the only genus of gastropod outside of the Heterobranchia to have secondarily lost its mineralized shell,^[4] which it sheds after its larval phase.^[5]

When disturbed a bluish white, thread-like substance is discharged through defensive glands in the form of about 12 densely placed white papillae on both sides of the back.^[6]

Species

Species within the genus Titiscania include:

• Titiscania limacina Bergh, 1890^[7]
• Titiscania shinkishihataii Taki, 1955^[8]