384 Proceedings of the Royal Irish Academy. 



Kg- 



76. Silhouette of axis of " Providence " specimen of Seirpearia furcata 



it n. s.). 



77. ScirpeaHa furmta. Small portion of main stem of " Providence " 



specimen to show the verrucae. 



78. Scirpearia furcata. Two ^-iews near the base of the second primary 



branch of the " Pro^•idence " specimen. 



79. Scirpearia furcaia. Two \'iews midway on the third primary branch of 



the " Providence " specimen. 



80. Scirpearia furcata. Two views near the tip of the third primary branch 



of the " Providence " specimen. 



81. Spicules of the " Providence " specimen of Scirpearia fircata. 



82. Scirpearia furcata. Complete colony (nat. size) of a young specimen in 



the Cape Collection. 



83. Scirpearia furcata. Portion enlarged (x8)of a Cape specimen to show 



the low nature of the verrucae. 



84. Scirpearia furcata. Portion enlarged ^ X 4) of a Cape specimen to show 



the nature of the verrucae. 



85. Scirpearia furcata. Portion enlarged ( x 5J of a Cape specimen to show 



the nature of the verrucae. 



86. Scirpearia furcata. Portion enlarged ( x 5) of a Cape specimen to show 



the distribution and nature of the verrucae. 



87. Spicules of a Cape specimen of Scirpearia furcata. 



88. Scirpearia furcata. Two views of a portion near the middle of a colony 



in the Indian Collection to show the distribution of the verrucae, 

 (a) polyp-bearing aspect, (6) non-polyp-bearing aspect. 



89. Spicules of Indian Collection specimen (Fig. 88) of Scirpearia furcaia. 



90. Three views from a specimen of Scirpenria furcata in the Indian Collec- 



tion to show the distribution and nature of the verrucae at different 

 levels, (a) near l^ase, (6) midway, (r) tip. 



91. Spicules of Scirpearia furcata. (Specimen fig. 90.) 



92. Scirpearia furcata, var. robusta. Colony (nat. size) to show the general 



habit and the distribution of the verrucae. 



93. Scirpearia furcata, var. robusta. Portion enlarged (x 5) near the base 



to show the nature of the verrucae. 



94. Spicules of Scirpearia furcata, var. robugta. (Andamans specimen.) 



