FIGURE 4. Calliostoma valkuri n in Calliostomatidae, Colloniidae, Margaritidae, and Solariellidae (Gastropoda: Trochoidea) collected by the Marion Dufresne (MD55) expedition in southeastern Brazil, with description of a new species of Calliostoma

FIGURE 4. Calliostoma valkuri n. sp. Holotype MNHN-IM-2000-34300, sta. DC79 (H=4.1 mm, D=4.2 mm). A. apertural view. B. apical view. C. umbilical view. D. SEM, apertural. E. SEM, apical view. F. SEM, umbilical view. G. SEM, detail of spire. H. SEM, detail of apex showing the protoconch.