Fig. 
120. 
la. 
122. 
. 123. 
124. 
125. 
. 126. 
lat: 
28, 
. 129. 
. 150. 
151. 
Fig. 
57 
Figg. 120—122. Geodia Barretti Bwk. 
Fragment of oscular tube, showing the small congregated oscula. 
The sphincters are partly shut, partly opened. Low power. 
Vertical section through the oscular tube and main excurrent canals. 
About natural size. 
Fragment of the same a little magnified. Apparently there is late- 
ral communication between the canals and the oscula. 
Figg. 123—126. Tethya lyneurium var. obtusum. 
(tr°.) ac.-f. 
st. Large stellate. Radii stout, short. 
st. Small stellate, 
ir. tr. £ 
Hartn. VII, Cam. luc. 
Fig. 127 —132. Polymastia penicillus (Mont.) Vosm. 
One of the papillae (»cöne”, Merejk.), showing some pores, and 
protruding spicules. Low power. 
Vertical seetion through one of the papillae. Hartn. Oc. 3. Syst. IV. 
tr°. ac. f. Large spicule from the interior. 
tr. ac. Large spicule from the margin. 
Hartn. IV, Cam. luc. 
tr°.. ac. f. Average sized spicule. n ‚ Cam. luc 
1323, b, c. tr°. ac. f. Smallest spicules from the rind. 
. 133. 
. 134. 
. 135. 
. 186. 
Figg. 133— 136. Thecophora semisuberites O. S. 
tr°. ac. f. Small specimen. 
(ins) ac.zt. 
Head of tr°. ac. (f.) 
tr°. ac. f. Largest specimen, 
Hartn. IV, Cam. lue. Zeiss. 
Fig. 137—139. Suberites montiniger Crtr. 
Fig. 137. tr®. ac. 
Figg. 138—139. Elongated, oval heads of tr°, ac. 
Hartn. IV, Cam. luc. Zeiss. 
Figg. 140—144. Suberites spec. (montalbidus Crtr. ?) 
Fig. 140. (tr°.) ac. (f.). 
Figg. 141 and 142. Heads of tr°, ac. 
Fig. 143. ac?. (sp.) f°. 
Fig. 144. tr?. (sp.) f°. 
Fig. 145. Section (vertical) through Cribrochalina variabilis var. crassa. Natu- 
ral size. 
