Prosipho

Prosipho is a genus of sea snails, marine gastropod mollusks in the family Prosiphonidae, the true whelks.

Description

I would like to create a new group under the name Prosipho.
Compared to the Nordic species, the Antarctic ones are significantly smaller; the largest specimen I have is not yet 12 mm high. All of them show a distinct spiral sculpture on the lower whorls. The lower canal has a very variable length. The initial whorl is usually smooth, sometimes uniquely shaped, but in two species, the upper whorls are covered with longitudinal folds. None of the species mentioned perfectly match the specimens I have.
A left-handed coiling species, of which I only have two empty shells, is so similar to the mirror image of some of these species that it is likely closely related to them.
Dall established the genus Antistreptus for a similar left-handed form which he placed next to Trophon.

Species

Species within the genus Prosipho include:Prosipho amiantus Oliver & Picken, 1984Prosipho antarctidis Prosipho astrolabiensis

† Prosipho antarctocostata Prosipho bisculptus Thiele, 1912Prosipho certus Thiele, 1912Prosipho chordatus Prosipho congenitus Smith, 1915Prosipho crassicostatus
† Prosipho delli Prosipho elongatus Thiele, 1912Prosipho enricoi Engl, 2004Prosipho fuscus Thiele, 1912 Prosipho gaussianus Thiele, 1912Prosipho glacialis Thiele, 1912Prosipho gracilis Thiele, 1912Prosipho grohae Engl, Winfried, 2005Prosipho harrietae Engl & Schwabe, 2003Prosipho hedleyi Powell, 1958Prosipho iodes Oliver & Picken, 1984
† Prosipho lamesetaensis
† Prosipho lawsi Prosipho mundus Smith, 1915Prosipho nodosus Thiele, 1912Prosipho pellitus Thiele, 1912
† Prosipho polaris Prosipho propinquus Thiele, 1912Prosipho pupa Thiele, 1912Prosipho pusillus Thiele, 1912Prosipho sindemarkae Engl & Schwabe, 2003Prosipho spiralis Thiele, 1912Prosipho tomlini Powell, 1957Prosipho tuberculatus Smith, 1915Prosipho turritus Oliver & Picken, 1984Prosipho valdiviae Thiele, 1925Prosipho wayae Engl, Winfried, 2005

;Synonyms:Prosipho aurora Hedley, 1916: synonym of Prosipho crassicostatus Prosipho cancellatus E. A. Smith, 1915: synonym of Prosipho nodosus Thiele, 1912Prosipho contrarius Thiele, 1912: synonym of Antistreptus contrarius Prosipho daphnelloides A. W. B. Powell, 1958 : synonym of Prosipho elongatus Thiele, 1912Prosipho hunteri Hedley, 1916: synonym of Prosipho nodosus Thiele, 1912 Prosipho macleani Hedley, 1916: synonym of Prosipho mundus E. A. Smith, 1915Prosipho madigani Hedley, 1916: synonym of Prosipho mundus E. A. Smith, 1915 Prosipho nestoris : synonym of Liratilia conquisita nestoris C. A. Fleming, 1948 : synonym of Liratilia conquisita conquisita Prosipho reversus Powell, 1958: synonym of Antistreptus reversus Prosipho perversus A. W. B. Powell, 1951: synonym of Antistreptus perversus

Prosipho priestleyi : synonym of Prosipho glacialis Thiele, 1912Prosipho shiraseae Numanami, 1996: synonym of Prosipho nodosus Thiele, 1912Prosipho similis Thiele, 1912: synonym of Prosipho antarctidis Prosipho torquatus Barnard, 1963: synonym of ''Belomitra torquata''