Aforia crebristriata

Aforia crebristriata is a species of sea snail, a marine gastropod mollusk in the family Cochlespiridae.[1][2]

Aforia crebristriata
Shell of Aforia crebristriata (holotype at the Smithsonian Institution)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Cochlespiridae
Genus: Aforia
Species:
A. crebristriata
Binomial name
Aforia crebristriata
(W.H. Dall, 1908)
Synonyms[1]
  • Aforia (Dallaforia) crebristriata (W.H. Dall, 1908)
  • Irenosyrinx crebristriata W.H. Dall, 1908

It is also considered as the type species of the genus Dallaforia through its synonym Irenosyrinx crebristriata Dall, 1908 [3]

Description

The length of the shell attains 48 mm, its diameter 16.5 mm.

(Original description) The shell is of moderate size. It is white, covered with a pale yellow periostracum. The acute spire is a little shorter than the aperture. The six whorls, exclusive of the (lost) nucleus, are rounded. The; suture is very distinct. There is no axial sculpture, except incremental lines, unless on the (eroded) apical whorls. The siphonal fasciole is wide, extending from the suture to an obscure ridge which forms the shoulder of the whorl just behind the periphery. On the fasciole are six or seven smooth rounded subequal spiral threads with equal or wider interspaces, more crowded anteriorly. Beyond the shoulder are nine similar but coarser threads, sometimes entire, sometimes flattened or even medially sulcate on top, extending over the base, and on the region of the siphonal canal as many more, smaller and more distant, crossed by obvious incremental lines. The aperture is elongate and rather narrow. The anal sulcus is very wide but shallow. The outer lip is produced, evenly arcuate to the end of the canal, not constricted at the base of the whorl. The columellar lip is smooth The columella is short, obliquely truncate, gyrate, the axis pervious. The siphonal canal is wide, hardly differentiated.[4]

Distribution

This marine species is found in the upper abyssal regions from Alaska to Oregon, USA .

References
  1. Aforia crebristriata (Dall, 1908). Retrieved through: World Register of Marine Species on 29 August 2011.
  2. P. Bouchet; Yu. I. Kantor; A. Sysoev; N. Puillandre (2011). "A new operational classification of the Conoidea (Gastropoda)". Journal of Molluscan Studies. 77 (3): 273–308. doi:10.1093/mollus/eyr017.
  3. WoRMS (2015). Irenosyrinx crebristriata Dall, 1908. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=435338 on 2016-07-17
  4. W.H. Dall (1908) Reports on the Mollusca and Brachiopoda, Bulletin of the Museum of Comparative Zoology at Harvard College. vol. 43
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