Plate 11. 



Page 

 Fig. I. Pachychaliua caiilifera \'osni. ' , 7 



— 2. Pachychaliua caitlifera Vosni. Basal part of tlie individnal figured in fig. i, 



with genunuke , on a fragment of the .shell of a Modiola inodiolus\ in the 

 middle where the sponge is broken off, vgemmulse are seen uncovered, above 

 and below tliev are seen fainth' through the tissue, '/i — 



— 3. Chalina spatula n. sp., attached to a Hydroid stalk together with calcareous 



sponges, Ascidians, H\droids, Bryozoa and Octactinia ( Voeringia and Paraueph- 

 thya). I I II 



— 4. Halichoiidria obluuga Arm. Hans, "/i 24 



— 5. Reuiera tuhulosa Frstdt., on Alcyonidium gelatiuosum. '/i 44 



— 6. Reniera laxa n. sp. On the left side of the figure is seen a Balanoid round 



which the sponge has grown, '/i 46 



— 7. Halichoudn'a ? difficilis n. sp. '/ 1 28 



— 8. Rculera hetcrojihrosa n. sp. '/i 47 



— 9. Gellius flagellifer R. and D. ', , 71 



