Simpson — A Revision of the Gorgonellidae. 381 



Fig. 



12. Portions of J. juncea var. b. to show the distribution and nature of the 



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

 (e) near the tip. 



13. J. jmicea var. b. Cross-sections at the tln-ee levels given in fig. 12 to 



show the internal structure. 



14. Spicules of J. jv.ncea. 



15. 16, and 17. Three colonies of ./imce/^a ^remTWOc^a, reduced proportionately, 



to show the difference in the branching at different ages. 



IS. Three portions of Juncella geininacea enlarged (X 5) to show the nature 

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

 base, (b) midway (uon-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 raceviosa. Portion of colony described in XLI. 



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



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



verrucae. 



23. Spicules of Juncella racemosa. 



24. Terminal twig of Jmicella trilineata to show the nature and disposition 



of the verrucae. 



25. Transverse section of Juncella trilineata 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 trilineata. 



27. Spicules of Scirpearia profunda. 



28. Scirpearia hicksoni n. sp. Portion near the base enlarged ( X 4) to show 



the appearance of the aspect devoid of polyps. 



29. Scirpearia hicksoni n. sp. Portion near the base enlarged ( X 4) to show 



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



30. Scirpearia hicksoni n. sp. Tip 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. 



