« Shell shaped like that of a miniature Limnaea of the stagnalis type, extremely thin, transparent and glossy. Sculpture: fine and close-set striae, which become stronger and more remote on the base. Colour whitish. Spire long and tapering, somewhat turreted; nucleus partly exposed, and prominent, twisted upwards in front, and sloping towards the back. » – J. G. Jeffreys: British conchology vol. IV, London 1867, p.142. – « Body equal in lenght to the spire; whorls convex, quite smooth, of rapid longitudinal increase. No umbilicus. No fold. […] Very few ewamples have been taken of this extremely scarce species. Mr. Alder obtained his specimens at Tynemouth; Mr. Hanley dredged a single dead one at Herm, near Guernsey, in seven or eight fathoms depth; and Mr. Clark from deep water in the offing at Exmouth. » – Forbes & Hanley: Hist. Br. Moll. vol. III, London 1853, p.292.

« Ondina obliqua can be recognized by its tilted protoconch which is intorted of type B, instead of type C as in all other Ondina species. It is a well-known all be it rare species of the Atlantic-Mediterranean coasts of Europe… » – van Aarsten, Gittenberger & Goud: Pyramidellidae collected during the Dutch CANCAP and MAURITANIA expeditions (part 1) p.18.