Pneumodermopsis teschi n. sp., and notes on some other Pteropoda of the “Thor” Expeditions 1903-1910 (Gastropoda)

Part of the “Thor” collections are studied, with the aid of notes by Dr. J.J. Tesch. A new species, Pneumodermopsis (Pn.) teschi, is described, and the variability of some taxonomic characters in Thliptodon are mentioned. A distributional map for the “Thor” records, based on material from the collection of the Zoological Museum in Copenhagen and on the notes left by Tesch, is provided.