Transactions of the Linnean Society of London/Volume 12/Descriptions of two new Shells

by Frederic Marryat

XVIII. Descriptions of two new Shells.⁠By Captain Frederic Marryat, R.N. F.L.S.

Read February 18, 1817.

MITRA.

Mitra zonata.

Tab. X. Fig. 1, 2.

Mitra epidermide luteâ, fulvo-marmoratâ, anfractibus infernè basi nigris, columellâ quinque-plicatâ.

Habitat in mare Mediterraneo.

Anfractus basi nigri, crenato-striolati.

This shell was taken up near the port of Nice in the Mediterranean, adhering to a sounding-lead, in very deep water. I have no hesitation in pronouncing it to be a new species, as I cannot find it described by any author.

CYCLOSTREMA.

character genericus.

Testa depressa, perspectivo-umbilicata; apertura circularis.

Cyclostrema cancellata.

Tab. X. Fig. 3, 4.

C. testâ albâ, lineis longitudinalibus et transversis elevatis decussantibus, inde cancellatâ.

Linn. Trans. Vol. XII. Tab. 10. p. 338.

Habitat———

Apertura labiis cancellatis, cancellis transversim striatis.

I found this beautiful little shell among a collection of chiefly West India shells. According to the Linnaean system, it would come under the genus Turbo; but with the advice of Dr. Leach, I have distinguished it as a genus, under the title of Cyclostrema. Helix depressa and serpuloides of Montagu are referable to the same genus.