Pilsbryspira leucocyma

Pilsbryspira leucocyma, common name the white-knobbed turret, is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.^[1]

Pilsbryspira leucocyma
Shell of Pilsbryspira leucocyma
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Pilsbryspira
Species:	P. leucocyma
Binomial name
Pilsbryspira leucocyma (Dall, 1884)
Synonyms[1]
Buccinum zebra Lamarck, J.B.P.A. de, 1822 Crassispira (Monilifera) leucocyma (Dall, 1884) Drillia zebra var. leucocyma Dall, 1884 Monilispira leucocyma Dall, 1884 Pilsbryspira zebra Lamarck, J.B.P.A. de, 1822 (nomen dubium)

Description

The length of the shell varies between 12 mm and 20 mm.

Compared with Drillia albomaculata, (d'Orbigny, 1842) (now synonym of Pilsbryspira nodata (C. B. Adams, 1850) ), it is more slender, with the periphery-angle bearing a pair of close revolving ribs, more conspicuous than the rest of the spiral sculpture and tipped with white where crossing the longitudinal ribs.

In the typical Drillia albomaculata the coloring is similar, but a single broader rib revolves at the periphery. In some specimens, however, there is a more or less distinct impressed line on the middle of the rib, so approximating it to this variety.^[2]

Distribution

P. leucocyma can be found in Atlantic Ocean waters, ranging from the eastern coast of Florida south to Brazil.^[3]