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''Olivella perplexa'' is a species of small
Original description: "The shell is small (maximum length about 5 mm.), relatively solid and porcellaneous white, glossy, usually with an elevated stubby spire of about 5 whorls and about half the total length. The nuclear whorls are small, convex and partly immersed so as to appear to lie below the general level of the succeeding turn. The sutures are deeply channelled, widely overlapped by the sharp and often frayed margin of the whorl in front. Parietal callus is thick, particularly so near the end of the aperture from which it extends downward along the surface of the parietal wall as in thickened ribbon to the end of the columella which it partly encircles. The pillar structure is a simple fold at the end of the columella. Fasciole small and simple. The outer lip has a straight, thin edge, its posterior junction with the body-whorl enclosing a short canal.
Length 3.8 mm., diameter 1.8 mm."
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, marine gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk in the subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...
Olivellinae, in the family Olividae
Olive snails, also known as olive shells and olives, scientific name Olividae, are a taxonomic family of medium to large predatory sea snails with smooth, shiny, elongated oval-shaped shells.Bouchet, P.; Gofas, S. (2012). Olividae. Accessed throu ...
, the olives. Species in the genus Olivella are commonly called dwarf olives.
Description
Original description: "The shell is small (maximum length about 5 mm.), relatively solid and porcellaneous white, glossy, usually with an elevated stubby spire of about 5 whorls and about half the total length. The nuclear whorls are small, convex and partly immersed so as to appear to lie below the general level of the succeeding turn. The sutures are deeply channelled, widely overlapped by the sharp and often frayed margin of the whorl in front. Parietal callus is thick, particularly so near the end of the aperture from which it extends downward along the surface of the parietal wall as in thickened ribbon to the end of the columella which it partly encircles. The pillar structure is a simple fold at the end of the columella. Fasciole small and simple. The outer lip has a straight, thin edge, its posterior junction with the body-whorl enclosing a short canal. Length 3.8 mm., diameter 1.8 mm."
Distribution
Locus typicus: "Marathon, Florida Keys, Florida, USA."Olsson, A.A. 1956-''Proceedings of the Academy of Natural Sciences of Philadelphia Vol. 108'', pages 155-225.References
perplexa Gastropods described in 1956 {{Olividae-stub