{{Short description|Genus of gastropods}} {{Automatic taxobox | taxon = Thelyssa | image = | image_caption = | authority = Bayer, 1971{{No-gastropod-genus-ref}} | synonyms_ref = | synonyms = | display_parents = 4 }}
'''''Thelyssa''''' is a genus of extremely small deep water sea snails, marine gastropod mollusks in the family Seguenziidae.<ref name="WoRMS">WoRMS (2013). ''Thelyssa'' Bayer, 1971. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492303 on 2013-06-09</ref>
==Species== Species within the genus ''Thelyssa'' include:<ref name="WoRMS" /> *''Thelyssa callisto'' <small>Bayer, 1971</small>
==References== {{Reflist}}
==External links== * [https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=205052 ITIS] * [http://www.marinespecies.org/aphia.php?p=taxdetails&id=492303 World Register of Marine Species] {{Taxonbar|from=Q16964556}}
Category:Thelyssa Category:Seguenziidae Category:Monotypic gastropod genera
{{Seguenziidae-stub}}