356 THE GREAT BARRIER REEF. 



CHROMO PLATE X. 

 GREAT BARRIER REEF ALCYONARIA. 



Figs. 1-5. — Blue Coral, Heliopora ccerulea, p. 194. i, Branch of corallum, natural size ; 2, Expanded 



polyps ; 3, Portion of surface with extended commensal annelids ; 4, Transverse section 



through corallum, slightly enlarged and giving clearer view of commensal annelids; 



5, Commensal annelid, Leucodore, enlarged, with tentacles retracted. 

 Figs. 6-8. — Organ-pipe Coral, Tubipora mitsica, p. 191. 6, Portion of corallum with expanded 



polyps, natural size ; 7, Isolated corallites showing connecting platforms ; 8 Horizontal view 



of expanded polyp, enlarged. 

 Figs. 9, 10. — Cormilaria ttibiporoides, n.sp., p. 199. Polypary with expanded polyps, natural size; 



10, Horizontal view of expanded polyp. 

 I-igs. II, 12. — Spongodes sp., p. 196. Diversely-coloured polyparies ; iia, iib, and I2a, isolated 



polyps, enlarged, 

 ^'g- 1 3- — Xenia elongata, p. 196. Polypary with expanded polyps, natural size; 13 a, isolated 



polyps, enlarged. 

 Fig. 14. — Xenia ochmcea, n.sp., p. 197. Polypary with expanded polyps, natural size; 14A, isolated 



polyp, enlarged, 

 f'g- 15- — Xenia bntnnca, n.sp., p. 198. Polypary with expanded polyps, natural size; 15A, 



isolated polyp, enlarged. 

 Fig. 16. — Xenia pidsitans, n.sp., p. 197. Polypary with expanded polyps, slightly enlarged. 

 fig- 1 7- — Clavularia viridis, p. 198. Colony of expanded polyps, natural size. 

 Figs. 18, 19, 20.— Sarcophy ton glancum, pp. 18 and 195. Young polyparies of diverse colours, with 



partially-expanded polyps, natural size; i8a and i8b, isolated polyps, enlarged. 

 Fig. 21. — Cornularia pavo, n.sp., p. 199. Expanded colony-stock, natural size. 

 Fig. 22. — Cornularia glanca, n.sp., p. 199. Expanded colony-stock, natural size; 22a, isolated 



polyp, enlarged. 



