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Show 140 ZOOLOGICAL COLLECTIONS M A D E BY H.M.S. 'ALERT.' [Jan. 4, 4. A portion of the ambulacral area of the same, rather more highly magnified, p. 89. 5. Calliderma grayi, abactinal surface, natural size, p. 95. fi. Ophioscolex coppingeri,>ide view of part of an arm, to show the spines, magnified four times, p. 98. PLATE IX. (ECHINODERMATA.) Fig. 1. Asterias brandti, sp. nov., X 2 diam., p. 91. 2. alba, sp. nov., X 2 diam., p. 92. 3. obtusispinosa, sp. nov., X 2 diam., p. 92. 4. neglecta, sp. nov., X 2 diam., p. 94. 5. Cycethra simplex, sp. nov., nat. size, p. 96. 6. , actinal surface of ray, X 1£ diam. PLATE X. (SPONGIDA.) Fig. 1. Aplysina ? regularis, p. 108. a. Fibre of external portion of section taken perpendicular to surface, X 34 diam.; b. Portion of skeleton, X 375 diam. 2. Chalina coppingeri, p. 110. Spicules, x 375 diam. 3. Siphonochalina fort-is, p. 111. a. Fibre from section perpendicular to surface, X 34 diam.; b. Spicules, X 375 diam. 4. Cladochalina armigera, var. pergamentacea, p. 112. a. Fibre from section perpendicular to surface, X 34 diam.; b. Spicule, X 375 diam. 5. Esperia magellanica, p. 117. Specimen from Sandy Point. a. Entire Sponge, reduced to one third nat. size; b. Main-skeleton spicule, X 134 diam., and head, further enlarged, to show character of central canal; c. Dermal-skeleton spicule, X 134 diam.; d. In-equianchorate flesh-spicule, from front and side, X 375 diam.; e. Bundle of fine acerate spicules, X 375. 6. Phakellia egregia, p. 114. The various forms of spicules, X 67 diam. 7. Ciocalypta calva, p. 115. a. Part of fibre near its base, showing the imperfectly Holorrha-phidote character of the fibre, X 67 diam.; b. Skeleton-spicule, X 134 diam., and head, further enlarged, to show character of central canal. 8. Alebion proximum, p. 119. a. Skeleton-spicules; b. Inequianchorate flesh-spicule, from front and side; c. Bipocdlate flesh-spicule: all X 375 diam. 9. Hymedesmia polita, p. 121. a. Smooth acuate spicules, X 134 diam., and head, further enlarged; b. Spined spicules, X 134 diam.; c. Inequianchorate flesh-spicule, from front and side, X 37~> diam. 10. Trachytedania spinata, p. 122. a. Skeleton as seen in a perpendicular Hection of the entire thickness of the sponge, X 34 diam.; b. View of surface, showing dermal skeleton and its connexion with the main skeleton, X 34 diam.; c. Spined, and d, smooth acuate spicules, X 34 diam.; e. Cylindrical spicule, x 134diam., and head, further enlarged; /. Fine acuate, X134 diam. PLATE XI. (SrONGIDA.) Fig. 1. Tedania tenuicapitata, p. 124. a and c. Acuate and acerate spicules, X 134 diam.; b. Cylindrical spicule, x 134 diam., and extremities, further enlarged. |
