Simpson — A Revision nf tlie Gorgonellidae. 135 



Fig. 



12. Portions of J. juncea var. b. to show tlio distriliution and nature nf the 



verrucas, (a) near the base, {h) midway (non-polyp-bearing aspect), 

 (c) near the tip. 



13. ./. juncea var. b. Cross-sections at the three levels given in fig. 12 to 



show the internal structure. 



14. Spicules of J. juncea. 



15. 16, and 17. Three colonies of t/MwccZ/a (7«m»i«ce<i, reduced proportionately, 



to show the difference in the branching at different ages. 



18. Three portions of Juncella f/cmmacea enlarged (x 5) to show the nature 



and distribution of the verrucae at different levels, (a) near the 

 base, (b) midway (non-polyp-bearing aspect), (c) near the tip. 



19. Transverse sections of J. gemmacea, at levels corresponding to those in 



fig. 18, to show the structure of the coenenchyma ( x 5). 



20. Juncella racemosa. Portion of colony described in XLI. 



21. Juncella racemosa. Colony enlarged (x li). 



22. Twig of Juncella raccmom to show disposition and nature of the 



verrucae. 



23. Spicules of Juncella racemosa. 



24. Terminal twig of Juncella trilincata to show the nature and disposition 



of the verrucae. 



25. Transverse section of Juncella trilineatu to show (1) the structure of the 



coenenchyma, (2) the three large main canals, and (3) the position 

 of three alternating rows of verrucae. 



26. Spicules of Juncella trilincata. 



27. Spicules of Scirpearia proftinda. 



28. Scii-pearia, hicksoni n. sp. Portion near the base enlarged ( X 4) to show 



the appearance of the aspect devoid of polyps. 



29. Scirpcctria hicksoni n. sp. Portion near the liase enlarged ( X 4) to sliow 



the nature of the verrucae on the " crowded " aspect. 



30. Scirpcnria hicl-mni n. sp. T\\) of colony enlarged ( X 4) to show the 



distribution and nature of the verrucae. 



31. Spicules of Scirpearia hicksoni n. sp. 



32. Scirpearia verrucosa n. sp. Portion enlarged ( X 6) to show the nature 



and distribution of the verrucae. 



33. Spicules of the Scirpearia verrucosa n. sp. , 



