PLATE Vn. 



Luidia quinaria. 



104. Abactiual view, x 1. 



105. Actiiial view, x 1. 



106. Mouth- plates. 11 = 78 mm. x <!. 



107. Twelftli adambulacral and correspoudiug iuferomarginal ])lates. 



11 = 78 mm. The upper side is the abcentral end. x 6. 



108. Twelfth inferomarginal and superomarginal ]>lates. li = 78 



mm. X 7. 



109. Oral jwdicellaria. x 45. 



110. Adambulacral pedicellaria. x 45. 



111. PaxUla. K = 78mra. x 7. 



112. Madreporite. R = 78 mm. Tlie upper side is tlie outer, x 7. 



Ctenodiscus crispatus. 



113. Abactinal view of a Misaki sjjecimen. x 1. 



114. Actinal view of same, x 1. 



115. jMouth-plates and portion of interradius. 11 = 27 mm. Misaki 



specimen, x G. 



116. Paxilla3 in profile, from near the margin of tlie disk ; after 



treatment with caustic potash. Misaki specimen, x 45. 



117. Paxillae viewed from inside, Avith papular pores between. 



Misaki specimen, x 45. 



118. Flattened calcareous rod from fasciolar groove. Misaki speci- 



men, x 130. 



119. Madreporite. Misaki specimen. K = 27 mm. The upper side 



is the inner, x 5. 



