Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Hygrosoma hoplacantha (peristome) Description Close-up of peristome: The buccal sacs are well developed (arrows).Scale 20 mm. Author Schultz, Heinke JPG file - 146.91 kB - 827 x 879 pixels added on 2011-02-23228 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Click here to return to the thumbnails overview