Crassispira harfordiana

Crassispira harfordiana is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.[1]

Crassispira harfordiana
Apertural view of a shell of Crassispira harfordiana
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Pseudomelatomidae
Genus: Crassispira
Species:
C. harfordiana
Binomial name
Crassispira harfordiana
(Reeve, 1843)
Synonyms[1]
  • Crassispira adamsiana Pilsbry & Lowe, 1932
  • Crassispira hardfordiana Reeve, 1843
  • Glossispira harfordiana (Reeve, L.A., 1843)
  • Pleurotoma harfordiana Reeve, 1843

Description

The length of the shell varies between 30 mm and 40 mm.

The whorls show a narrow yellowish band on the periphery.[2]

Distribution

This marine species occurs off Cuba and Panama.

gollark: The resistor behaves ohmically and the current through both things is the same.
gollark: IIRC, if we assume the LED is an ideal diode, it'll just always have a 2V potential difference across it (if there's more than 2V in the circuit and also it is the right way round oops).
gollark: Well, that would actually have been right if you used the right units then added 2, possibly.
gollark: Not just... multiply... them?
gollark: I'm pretty sure you'd have to work out what voltage across the resistor would give you 20mA through it, then add 2 to it for the LED.

References
  1. Crassispira harfordiana (Reeve, 1843). Retrieved through: World Register of Marine Species on 4 April 2010.
  2. G.W. Tryon (1884) Manual of Conchology, structural and systematic, with illustrations of the species, vol. VI; Philadelphia, Academy of Natural Sciences This article incorporates text from this source, which is in the public domain.
  • Biolib.cz: Crassispira harfordiana
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
  • "Glossispira harfordiana". Gastropods.com. Retrieved 16 January 2019.
  • McLean, J.H. (1971) A revised classification of the family Turridae, with the proposal of new subfamilies, genera, and subgenera from the Eastern Pacific. The Veliger, 14, 114–130


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