PLATE XIII. 



PAGE 



Fig. 66. Scotella Gibbsii. Natural size. 37 



66 a. Section 



Fig. 67. Astrodapsis Whitnteyi. Natural size. 37 



67 a Elevation. 



Fig. 68. Astrodapsis tumidus. Natural size. 37 



68 a. Side outline. 



Fig. 69. Asterias Remondii. Natural size. 37 



View of one of the arms. 



