Note OH Megalania, Owen^ and Meiolauia, Owen. 85 



Plate IX. 



Figs. 1, 1 a. 3IucroneUa porelliformis, n. sp. 



Fiff. 2. Idmonea radicata, n. sp. 2 a. Enlarged, showing two ocecia. 



Fig. S. Scrupocellai-ia ndnuta, n. s^. 'da. Dorsal view. 



Fig, 4, Nellia simplex, Busk, showing ooecia. 



Fig. 5. Mucronella (? Lepralia) cothurnica, n. sp. 5 a. Three cells, show- 

 ing arrangement of zoarium. 



Fig. 6. Escharoides discus, n. sp. 6 a. Marginal cell, showing aviculariuna 

 on one side of notch. G b. Central cell, with penstome deve- 

 loped. 



Plate X. 



Fig. 1. liornera spinigera, u. sp. 1 a. Anterior surface. 1 b. Posterior 



surface. 

 Fig. 2. Idmonea toi-tMosa, n. sp. 2 a. Anterior surface. 2 b. Posterior 



surface, showing tortuous tubes. 

 Fig. 3. Smittia latiavicularia, n. sp. o a. Lateral view, to show avicu- 



larium on ooecium. 

 Fig. 4. Cribrilina radiata, \ax.JiubeUifera, uov. var. 

 Fig. 5. Stephanopora cribrispinata, no v. gen. et sp. 5 a. Cell, showing 



shape of orifice. 

 Figs. 6, 6 a. Smittia tubida, n. sp. Qb. Primary orifice, with denticle. 



XL — Note on the ExtiTict Reptilian Geiiei'a Megalauia, 

 Owen^ and Meiolania, Owen. By A. Smith Woodward, 

 F.G.IS., F.Z.S., of the British Museum (Natural History). 



The relabelling of the Australian fossils in the British Mu- 

 seum, at various times described and figured by Sir Richard 

 Owen under the names of Megalania and Meiolania, has 

 lately necessitated a careful examination of the literature of 

 the subject and comparison of specimens. Recent discoveries 

 are generally admitted to have proved that several of the 

 original determinationsj founded upon imperfect materials, 

 were erroneous ; some of the fossils are truly Lacertilian, 

 others are known with equal certainty to be Chelonian, and I 

 am able to add on the present occasion that the remainder are 

 ]\Iammalian. The nomenclature of the genera is also some- 

 what confusing, and it may therefore be of interest briefly to 

 summarize the present aspect of the questions involved. 



The "Gigantic Land-Lizard" {Megalania p7-isca) of Aus- 

 tralia was first made known in 1858 by Sir Richard Owen *, 



* E. Owen, " Description of some Remains of a Gigantic Laud-Lizard 

 (Megalania prisca, Owen) from Australia," Phil. Trans. 1859, pp. 43-48, 

 pis. vii., viii. 



Ann. & M-ag. N. Hist. Ser. 6. Vol. i. 7 



