230 Geological Society. 



whether species or varieties. L. affinis is uiuloubtedly a link 

 between L. anatifera and L. hilli, but in the circumstances I 

 have not proposed to reduce />. hilli to ihe rank of a variety, 

 pvefeiring to leave the discussion of its status till the genus 

 is next revised as a whole. 



2. In the material at Mr. Jennings's disposal were speci- 

 mens of Conchodennn virgatum and G. auritum from the 

 hull of tlie ' Terra Nova.^ In the collection placed in my 

 hands neither of these species was represented from tliat 

 source. C. auritum, which was taken upon whales in New 

 Zealand waters by the 'Terra Nova,' is also reported by 

 Mr. Jcnninj-s from whales in the same neighbourliood. 



PROCEEDINGS OF LEAllNED SOCIETIES. 



Gi:OI.OGICAL SOCimT. 



November 8th, IDIG.— Dr. Alfred Harker, F.ll.S., President, 

 in the Chair. 



The following comraunication was read : — 



'■ Aulina rotiformis, gen. et sj). nov., PJiill/jysosfrcea hemiahi 

 (Lonsdale), and the Genus Orionustrcea.'' By Stanley Smith, 

 B.A., D.Sc., F.G.S. 



The primary object of the present communication is a descrip- 

 tion of a new and interesting coral genus of colonial habit, Aulina, 

 obtained from the highest limestone that can be associated with 

 the Lower Carboniferous — the Fell Top Limestone of North- 

 umberland and its equivalent horizon in Teesdale, the Botany 

 Beds. 



Since this form has been confounded with another Carboniferous 

 species, well known under the name of ' FliillipsasircEa radiata 

 (S. Woodward),' it has been found advisable, in fact necessary, 

 to extend the original scope of the paper so as to include a 

 revision of the genus Phillijysastraea and a description of ' Ph. 

 radiata ' and its allies, which I have grouped together under a 

 new generic name, Orionastroea. Several type-specimens, including 

 that of PhiUipsastrcEa liennahi (the genotype of Phillipsasti-cea), 

 are described and figured. 



The new genus from the Fell Top Limestone is a very distinctive 

 form, on account of the remarkable annvdar wall developed within 

 the theca, and may prove of considerable value as a zonal 

 index. 



