570 Reports and Proceedings — 



genus Phascolomys. The specific name is suggested by the chief 

 characters that distinguish the present form from any hitherto 

 known, recent or distinct. 



2. " On the Structure and Classificatory Position of some Madre- 

 poraria from the Secondary Strata of England and South Wales." By 

 Prof. P. Martin Duncan, M.B., F.R.S., F.G.S. 



This paper consisted chiefly of a criticism of the conclusions 

 arrived at by Mr. E. F. Tomes in various papers communicated to 

 the Society. 



All the species of the genus Astrocoenia which were described in 

 the Supplement to the British Fossil Corals, Pal. Soc. 1867, from 

 the Infra-Lias of South Wales, belong to that genus, and not to 

 Stylastrcea, de From. The drawing of Astrocoenia plana, Dune, 

 given by Mr. Tomes, does not correspond with the type si^ecimen of 

 the species. Stylastrcea sinemuriensis and S. Martini, de From., do 

 not form part of the fauna of the Infra-Lias of South Wales. 

 Cyathocoenia, Dune, is not the same as Fhyllocoenia, Laube, which 

 is Koiloccenia, Dune. Thecosmilia Martini and T. Michelini of the 

 European Hettangian are found in the Infra-Lias of England. 

 T. rugosa, Laube, was first noticed in the Memoir of the Corals of 

 the zone of Ammonites angulatus, Pal. Soc. 1867, and the species 

 was properly figured. Cladophyllia is a subgenus of Thecosmilia. 

 Elysastrc^a, Laube, has two well-marked species in the Sutton Stone. 

 Montlivaltia simplex has the shape of the calice not merely dependent 

 on pressure, but caused by normal growth. M. Wallice, Dune, has no 

 evidence of "rejuvenescence," and the growth noticed is endothecal, 

 and would be termed by Lindstrom " stereoplasm." M. polymorplia, 

 Terquem et Piette, remains a member of the Infra-Lias fauna. M. 

 pedunculata, Dune, is not a Cladophyllia, but a simple coral of the 

 genus to which it was assigned by the author. The geological 

 position of the Sutton Stone and associated deposits is, from the 

 paliBontological evidence, above the Eheetic series. 



The cast of a Montlivaltia, figured by the author in the Memoir 

 on the Corals of the Zone of A. angulatus, Pal. Soc. 1868, p. 68, does 

 not coincide with M. rhcetica, Tomes, but with M. Eaimei. M. 

 foliacea. Tomes, has not nine cycles of septa, as stated by its 

 describer. The septal arrangement of M. excavata. Tomes, and 

 M. papyracea, Tomes, is doubtful. Thamnastrcsa is not a perforate 

 coral, but a Fungid. Synastraa and Centrastrcea were not founded 

 by M. de Fromentel ; the former originated with Milne Edwards, 

 and the latter with d'Orbigny. Centrastrcea is not synonymous 

 with AstrcBomorpha. Oroseris is not a perforate coral ; and Milne 

 Edwards and Jules Haimes were quite correct in stating that the genus 

 " se rapproche beaucoup des Comoseris ; " and it is incorrect to state 

 that one genus really bears but a faint resemblance to the other. 

 Oroseris is a subgenus of Comoseris, which is not one of the Perforata. 



Microsolena, Lmx., is one of the Fungida. 



Cyathophyllia, E. de From., is posterior in date to Antillia, Dune, 

 and therefore C. oolitica, Tomes, is Antillia oolitica, Tomes, sp. ; 

 but as Antillia is a subgenus of Circophyllia, Edw. & H., the name 

 should be Circophyllia oolitica, Tomes, sp. 



