Victorian Fossils. 219* 



calices. In this feature it differs from the Victorian Pleuro- 

 dictyum but seems to agree with P. amazonicum, though the latter 

 has comparatively long corallites. The visceral chamber is oc- 

 cupied by a mass of trabecular tissue formed by irregularly 

 anastomosing fibres, and this structure is apparent on the floor 

 of the calice. In Pleurodictyum megastomum on the contrary,, 

 septa are seen to be developed around the outer margin and 

 feebly extend to the inner edge. 



Vaughania, Garwood 19 is a Carboniferous coral having certain 

 affinities both with Cleistopora and Pleurodictyum. From Clcis- 

 topora it differs in having no trabecular tissue at the floor of the 

 calice, the corallum being formed of compact fibrous coenenchyma ; 

 it has a definite system of ring-canals and branches and a basaL 

 epitheca as in Pleurodictyum. From the latter genus it differs- 

 in the vertical calices and absence of tabulae and septal spines,. 

 but has intermural pores. 



Occurrence. — Pleurodictyum megastomum is one of the typical 

 fossils of the Yeringian Series of Victoria. The figured speci- 

 men, built on a Spirifer, was collected by Mr. R. H. Annear from 

 Hughes' Quarry near Lilydale ; whilst the small but complete 

 corallum was presented by Mr. A. M. Savige and came from 

 Kinglake West. 



The localities for P. megastomum are : — 



In the Lilydale and Upper Yarra districts. — Hughes' Quarry 

 (R. H. Annear) ; Ruddock's Quarry (F. P. Spry, J. S. Green, F. 

 Chapman) ; Wilson's Quarry (J. T. Jutson) ; Seville (J. S. 

 Green) ; \\ miles below Simmon's Bridge Hut on the Yarra 

 (Geol. Surv. Vict. B. 16) 20 ; junction of Woori Yallock and Yarra. 

 (Geol. Surv. Vict. B. 23) ; Woori Yallock, Mr. J. H. Syme's- 

 Orchard (F. Chapman). 



In Gippsland. — Loyola near Mansfield ; Thomson River ;: 

 Cooper's Creek, Thomson River (Rev. A. W. Cresswell and A. A.. 

 Henderson). 



District of Plenty Ranges. — Kiriglake West (A. M. Savige) ; 

 Clonbinane; Wandong (F. P. Spry); Merriang Road near Kil- 

 more (J. T. Jutson) ; Kilmore (G. Sweet). 



In addition to these localities the same species is apparently 

 found at Zeehan in Tasmania (R. Etheridge jnr. and Rev. H„. 

 Anderson), and also at Yass, N. S. Wales (W. S. Dun). 



19. Quart. Journ. Geol. Soc, vol. LVIII., 1912, p. 5G4. 



20. This locality was referred to in error as " West of Mount Disap- 

 pointment," in my paper — Proc. R. Soc, Viet., vol. XV. (N.S.), pt. II._ 

 1903, p. 107. 



