XXXVII. — Coœcum SUPERBUM

Testa (quoad genus) maæima, solida, arcuata, grisea ; annulis plurimis (L — Lv.) planatis, ad apicem latioribus, cincia ; apertura haud tumente, parum dechivr, leviter contracta ; septo parvo, submamillato, mucronalo,

a CRD

mucrone dextrorsum sito; margine laterali primum convexæo dein concavo ; operculo ?..…

Long. 0m,0004. Diam. Om,0008 — 0w,0001.