146 OKHAMANDAL MARINE ZOOLOGY REPORT PART II 



PLATE II. 



Figs. 10rt-10c. Tetilla dactyloidea (Carter) (R.N. II. 2). Three specimens ; one cut in half length- 

 wise to show exhalant canal-system, x 1J. 

 Fig. 11. Seniera hornelli n. sp. (R.N. IV. 4). xl. 



,, 12. Reniera fibmreticulata n. sp. (R.N. II. 8). X 2. 



13. JReniera semifibrosa n. sp. (R.N. XXXIII. 1.). Nat. size. 



,, 14a. Halichondria reticulata Baer (R.N. II. 6). Nat. size. 



,, 146. (R.N. II. 11). 



,, 15. Siphonochalina minor n. sp. (R.N. XXVI. 4). Nat. size. 



,, 16. Auletta lyrata var. glomerata Dendy (R.N. III. 3). X 2. 



17. Auletta elongata var. fruticosa nov. (R.N. XXIII. 2). Nat. size. 



PLATE III. 



Fig. 18. Ciocalypta dichotoma n. sp. (R.N. IV. 21). X 2. 

 19. Esperella plumosa (Carter) (R.N. XXXII. 2). Nat. size. 

 ,, 20a. Desmacidon minor n. sp. (R.N. XX. 6 a). Flabellate specimen ; surface without oscula. 



Nat. size. 

 206. Desmacidon minor n. sp. (R.N. XX. 6 b). Digitate specimen ; osculum-bearing surface. 



Nat. size. 

 ,, 21. Guitarra indica n. sp. (R.N. IV. 5). Several specimens attached to the branching tube 



of a polychaete worm (Eunice, sp.) ; the uppermost (a) showing oscula. Nat. size. 

 22a. Psammochela elegans n. gen. et sp. (R.N. IV. 20). Specimen preserved in alcohol, with 



dermal membrane remaining, x 1|. 

 ,, 226. Psammochela elegans n. gen. et sp. (R.N. XVIII. 3). Specimen originally preserved in 



formalin ; the dermal membrane has been removed by maceration, x 1|. 



PLATE IV. 



Fig. 23. Echinodictyum gorgonioides n. sp. (R.N. XXI. 1.). Nat. size. 

 ,, 24a. Bubaris radiata n. sp. (R.N. III. 7 a). Upper surface, x 2. 

 ,, 246. ,, ,, Lower surface, x 2. 



,, 25. Spirastrella vagabunda var. tubnlodigitata Dendy (R.N. IV. 10). Nat. size. 

 ,, 26a. Polymastia gemmipara n. sp. (R.N. IV. 7). Viewed from above, b. buds ; p. pebble ; 



sp. c. internal spicular column. X 3. 

 ,, 206. Polymastia gemmipara n. sp. (R.N. IV. 7). Viewed obliquely from below, showing interior. 



ch. coagulated masses of choanosomal tissue attached to inner surface of cortex. Other 



lettering as before. X 3. 

 ,, 27. Megalopastas retiaria n. sp. (R.N. IV. 13). X 2. 



(All the figures on Plates II-IV are reproduced from drawings by Mr. T. P. Ceilings, with the 

 exception of Fig. 23. which is based on a photograph.) 



