ILLUSTRATIONS. 
XVII 
Page. 
Fig. 9fi. Genus Chorizopora Hincks, 1880 j 333 
97. Genus Daeryopora Lang, 1914 334 
98. Genus Harmeria Norman, 1903 334 
99. Anatomy of the Schizoporellae 336 
100. Genera of the subfamily Schizoporellae 339 
101. Genus Schizopodrella Canu and Bassler, 1917 341 
102. Genus Stephanosella Canu and Bassler, 1917 344 
103. Genus Lacerna Jullien, 1888 346 
104. Genus Buffonella Jullien, 1888 349 
, 105. Genus Arthropoma Levinsen, 1909 351 
106. Schizobrachiella, new genus 353 
107. Genus Schizomavella Canu and Bassler, 1917 354 
108. Genus Dakaria Jullien, 1904 359 
109. Genus Emballotheca Levinsen, 1909 366 
110. Genus Tetraplaria Tenison-Woods, 1878 367 
111. Genus Gemellipora Smitt, 1872 369 
112. Anatomy of the Ilippoporae. . f 370 
113. Genera of the subfamily Hippoporae 373 
114. Genus Hippoporina Neviani, 1895 374 
115. Hippoponella, new genus 380 
116. Genus Hippomenella Canu and Bassler, 1917 380 
117. Genus Hippodiplosia Canu, 1916 1 394 
118. Anatomy of the Peristomellae .’ 403 
119. Genera of the subfamily Peristomellae 404 
120. Genus Bomancheina Jullien, 1888 407 
121. Genus Exochella Jullien, 1888 414 
122. Genus Didymosella Canu and Bassler, 1917 416 
123. Anatomy of the Microporellae • 418 
124. Miscellaneous genera of the Escharellidae 421 
125. Genus Cyclicopora Hincks, 1884 424 
126. Genus Kymella Canu and Bassler, 1917 428 
127. Genus Aimulosia Jullien, 1888 429 
128. Genus Anarthropora Smitt, 1867 430 
129. Genera of the Stomachetosellidae Canu and Bassler, 1917 432 
130. Anatomy of the Smittinidae , 454 
131. Genera of the Smittinidae Levinsen, 1909 456 
132. Genus Smittina Norman, 1903 458 
132 n. Genus Smittina Norman, 1903 469 
133. Genus Mucronella Hincks, 1880 474 
134. Genus Bhamphostomella Lorenz, 1886 476 
135. Genus Cystisella Canu and Bassler, 1917 480 
136. Genus Porella Gray, 1848 482 
137. Genus Umbonula Hincks, 1880 494 
138. Genus Bryocryptella Cossman, 1906 496 
139. Genus Hippadenella Canu and Bassler, 1917 497 
140. Anatomy of the Reteporidae Smitt, 1867 498 
141. Genus Retepora Imperato, 1599. 502 
142. Genus Hippelozoon Canu and Bassler, 1917 506 
143. Genus Schizellozoon Canu and Bassler, 1917 507 
144. Genus Triphyllozoon Canu and Bassler, 1917 508 
145. Genus Rhynchozoon Hincks, 1891 509 
146. Genus Schizotheca Hincks, 1877 510 
55899— 19— Bull. 106 ii 
