Polytremacis and the Ancestry of Helioporidm. 



303 



The type specimen seems to have undergone a double change in 

 fossilisation, and the material injected into the cavities of the coral 

 has been represented by von Eeuss as the actual skeleton. 



Miscelhneous Indeferminahle Species. 



(1) Heliopm-a immmiUosa, Millepora mammillosa, d'Achiardi, 1867. 

 'Catal. foss. terr. numm. Alpi Venete,' p. 11 ; von Eeuss, 1869. 

 " Pal. Stud. Alt. Tert. Alp.," Part 2 ; ' Denk. Akad. Wiss. 

 Wien,' vol. 29, p. 352, Plate 27, figs. 4, 5. 

 Polytremacis bulbosa^ d'Orbigny, 1850. * Prod. Pal.,' vol. 2, p. 183. 

 „ complanata ,, ,, oj). cit., p. 209. 



„ glonierata ,, „ „ p. 209. 



„ micropom „ „ ,, p. 209. 



„ provencialis ( „ ) „ p. 209. 



„ ramosa ( jj ) 3? p. 183. 



„ suhramosa ( „ ) „ ,, p. 209. 

 „ supvacretacea^ d'Orbigny, 1850. "Foss. Danien." 'Bull. 

 Soc. geol. France,' Ser. 2, vol. 7, p. 134. 



REFEREJfCES IN SECTIONS 1-4. 



1. F. Bernard. ' Elements de Paleonlologie,' 1893-1894. 



2. H. M. D. de Blainville. * Manuel d'Actinologie,' 1834. 



3. G-. C. Bourne, " On the Structure and Affinities of Heliopora coertdea, Pallas." 



' Phil, Trans.,' B, vol. 186, (1895), pp. 455-483, Plates 10-13. 



4. J. D. Dana. "Zoophytes," * United States Exploring Expedition. Wilkes.' 



Yol. 8, 1848. 



5. Milne Edwards and Haime. ' Histoire naturelle des Coralliaires,' vol. 3, 



1860. 



6. F. Freeh. "Lethaea G-eognostica," vol. 1, part 3, 1897. 



7. J. W. Gregory. " Millestroma, a Cretaceous Milleporoid Coral from Egypt," 



* Geol. Mag.,' n.s., dec. 4, vol. 5, 1898, pp. 337-342, Plate 13. 



8. G-. J. Hinde. Review of Lindstrom's ' Silurian Corals from Cliina,' ' Q-eol. 



Mag.,' n.s., dec. 2, vol. 10, 1883, pp. 86-88. 



9. Gr. Lindstrom. " Eemarks on the HeHolitidse," ' Handl. k. Svensk. Yet. -Akad.,' 



vol. 32, No. 1, 1899, 140 pp., 12 Plates. 



10. H. Michelin. ' Iconographie Zoophytologique,' 1840-1847. 



11. M. Neumayr. ' Die Stamme des Thierreiehes,' 1889. 



12. H. A. Nicholson. ' Manual of Palaeontology,' vol. 1, 1889. 



13. H. N. Moseley. " The structure and relations of the Alcyonariaa Heliojpora 



ccerulea, with some account of the Anatomy of a species of Sarcophyton, 

 Sre.:' ' Phil. Trans.,' vol. 166 (1876), pp. 91-130, 2 Plates. 



13. * H. N. Moseley. "On Helioporidse and their AlHes," '"Challenger" Re- 



ports,' ZooL, vol. 2, 1881, pp. 102-126, Plates 1, 2. 



14. A. D. d'Orbigny. " Note sur des Polypiers fossiles," 1849. 



15. „ " Prodrome de Paleontologie," vol. 2, 1850. 



