302 



ft 



Prof. J. W. Gregory. 



Synonymy^ — Polytremacis Uainvilliana, pars, ^lilne Edwards and 



Haime, 1860. ' Hist, nat Cor./ 

 vol. 3, p. 232. 



Characters. — Calicles well spaced and provided with from 8 to 20 

 (usually 8-14) long, well-developed septa. (Plate 2, figs, ba-h.) 

 Distribution. — Turonian. Gosau. 



Affinities. — This species is the most Heliolitoid member of the genus. 



Species 5. — Polyteemacis bellardi, Haime, 1852. 



Synonymy — 



Polytremacis bellarcU, Haime 1852. " Foss. Numm. Nice," ' Mem. 



Soc. geol. France,' Ser. 2, vol. 4, p. 289, 

 Plate 22, fig. 7. 

 Milne Edwards and Haime, 1860. 'Hist, 



nat. Cor.,' vol. 3, p. 233. 

 d'Achiardi, 1868. 'Stud. Comp.,' pp. 30, 49. 



1875. "Cor. eoc. Friuli," Part 3; 

 ' Atti Soc. tosc. Sci. nat.,* 

 vol. 1, p. 206. 

 von Eeuss, 1874. 'Pal. Stud. alt. Tert. Alp.,' 

 Part 3; 'Denk. Ak. Wiss. Wien,' vol. 23, 

 p. 18, Plate 51, figs. 2, 3. 

 Oppenheim, 1896. " Eocaenf. M. Postale," 

 . ' Palseontogr.,' vol. 43, p. 143. 

 3IiUepora glohiilaris, CatuUo, 1856. ' Terr, sedimento sup. Yenez.,' 



p. 78, Plate 17, fig. 9. 

 Heliopora „ d'Achiardi, 1867. 'Cat. foss. terr. numm. 

 Alpi Venete,' p. 11. 



Characters. — Corallum, massive, lobed. Calicles very irregularly dis- 

 tributed. Septa from 16 to 20, and either short and reduced to septal 

 ridges {fide von Reuss), or long, well-developed septa {fide Haime). 



Distribution. — Eocene. N. Italy. 



Genus Octotremacis, nov. 



Synonym — 



Polysolenia (non Ehrenberg, 1860), von Reuss, 1866. "Foss. Kor. 

 Java" : 'Novara Reise, Geol. Th.,' vol. 2, Part 2, p. 172. 



Characters. — Helioporidse with large, well-developed septa, typically 

 eight in each calicle ; the septa appear to occur in two cycles. 



Tyj^e Species. — Polysolenia hochstetteri, von Reuss, 1866, op. cit., p. 172, 

 Plate 2, fig. 3. 



Distribution. — Miocene. Tjukang Raon, Java. 



Eeliopmxb 



