338 Dublin Microscopical Club. 



of a vast thickness of sedimentary deposits overlying the Gaj or 

 marine Miocene, and containing Amphu'ijon, Mastodon, Dinotlieriuiu, 

 and many Artiodactyles of the supposed pig-like ruminant group, 

 lead to the belief that the author was not justified in opposing the 

 theory enunciated by Lyddeker and the Directors of the Survey. 

 The position of these Manchhar strata on the flanks of the mountain- 

 system of Sind was compared with that of the sub-Himalayan 

 deposits. The faunas were compared, and the Sewalik deposits, the 

 equivalents of the Upper Manchhar series of Sind, were pronounced to 

 be of Pliocene age. They were formed before and during the great 

 upheaval of the Himalayas, and in some places are covered with 

 glacial deposits, 



A comparison was instituted between these ossiferous strata and 

 the beds of Eppelsheim and Pikermi ; and the author discussed the 

 question relating to the age of terrestrial accumulations overlying 

 marine deposits. 



2. " On two new Crinoids from the Upper Chalk of Southern 

 Sweden." By P. H. Carpenter, Esq., M.A. Communicated by 

 Prof. P. Martin Duncan, M.B. Lond., F.K.S., F.G.S. 



Stem-joints of a Crinoid resembling those of Bourgueticrtnus have 

 long been known in the Pliinerkalk of Streben (Elbe) ; but on the 

 discoverv of the calyx it was found to ditler considerably from that 

 genus. It was then referred to the genus Antedon by Prof, Geinitz. 

 Stems also resembling Bonrgueticriaas have been found in the Upper 

 Chalk of Kiipinge (S. Sweden) ; and a calyx resembling that de- 

 scribed bv Prof, Geinitz has also been found. Prof. Limdgren 

 kindly intrusted this to the author for description. 



For these two fossils he considers not only a new genus but also 

 a new family required. He proposes for the former the name 

 Mesocrinus, as the characters of its calyx ally it to the Penta- 

 crinidse. The author describes the characteristics of the genus 

 Mesocrinus, and of the species M. suedica (the Swedish species), 

 and its differences from 21. Fischeri (from Streben), and discusses 

 the relationships of the genus, which combines the characters of a 

 Pentacrinus-cailyx with a Bourgveticrinus-stem. 



A new species of Comatula (Antedon impressci) from the Igna- 

 herga Limestone of Scania was also described, and its systematic 

 position discussed. 



DUBLIN MICROSCOPICAL CLUB. 



January 15, 1880. 



Nostoc 2'>aradoxum, Welw. — Prof. E. Perceval Wright, in exhibit- 

 ing a minute portion of Xostoc paradoxum, Welw., said that he had 

 been able, through the kindness of Mr. Carruthers, to forward morsels 

 of four so-called Xostocs from Dr. AYelwitsch's collection to Dr. Bor- 

 net, who was engaged in working out the species of this group, and 

 that he had found that No. 19, from " Mossamedes, at an elevation 



