On the Anatomy and Systematic Position of Incisura (Scissurella) lytteltonensis

WHEN Mr. Geoffrey W. Smith was in Tasmania in 1907-08 I asked him to collect for me any rare or remarkable specimens of gastropod molluscs and preserve them in a form suitable for anatomical and histological examination. Among other forms Mr. Smith obtained for me, through the kind offices of Mr. C. Hedley, of the Australian Museum, Sidney, a number of specimens of the little gastropod which is the subject of the present memoir. They were preserved in Perenyi’s fluid, which of course dissolved the shells, but except for the difficulty of staining always resulting from a prolonged immersion in this reagent, the histological condition of the specimens leaves little to be desired.