Some species of the family Astropectinidae recorded in northeastern Brazil. Astropecten alligator (A–D)A Abactinal view, in detail of the paxilla B Actinal view, in detail of mouth C Abactinal view of the arm D Actinal view of the arm; Astropecten cingulatus (E–H)E Abactinal view, in detail the paxilla F Actinal view G Abactinal view of the arm, and H Actinal view of the arm.