Microescultura da concha de Rectartemon (Rectartemon) depressus (Heynemann) (Gastropoda, Stylomatophora, Streptaxidae)

Abstract

ABSTRACT. THE MICROSCULPTURE OF THE SHELL 01' R ECTARTEMON (RECT4 /ITEMON)DEI'RESSUS (HEYNEMANN) (GASTROPODA, STYLOMATOPIIORA, STREPTAXIDAE). The microsculpture of Reclarleman depressus (Heynemann, 1868) shell is described on scanning electron microscope. The generics characteristics are proposed: shell 's dorsal sculture formed for ribs striae radial; nuclear whorls smooth; ventral surfàce of the shell smooth or slightly striate; and as speciftcs characteristics: the number of ribs striae radial on the last world. The R. (R.) depressus presented seven or eight ribs striae radial for millimeter.

Notes on a new collection of Streptaxidae (Gastropoda: Stylommatophora) from Brazil, with descriptions of two new species of Streptaxis

“…Re m a r k s: This species is characterized by the comparatively deeper suture and by the presence of axial ribs on the abapical portion of the whorls (PICORAL & LOPES-PITONI, 1998). The present material closely resembles the types (ZMB/MOLL.…”