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diatomaceous forms taken from the stomachs of Ascidians, dredged 

 in Kilkerron and Eoundstone Bays by Alex. G. More, Esq. Al- 

 though the material was scanty, the variety of forms contained 

 was considerable. Some of the most remarkable were Cocconeis 

 punctatissima (Grev. ' Micr. Journ.,' vol. v, p. 3, Trinidad). Coc- 

 coneis coronata (Brightwell, 'Mic. Journ.,' vol. vii, p. 9, fig. 2, 

 Shell-gleanings, West Indies) , Cocconeis Jimhriata (Brightwell, loc. 

 cit. fig. 3, Corsican Algae), Coscinodiscus marginatus (Ehr., Ame- 

 rica, Cuxhaven). Special attention was invited by Mr. O'Meara 

 to a very pretty Navicula, which he could not find described, and 

 which he proposed to name Navicula Morei, after the gentleman 

 to whom he was indebted for the material. 



Mr. Archer showed a new Cosmarium, first taken in County 

 "Westmeath, and again only a few days ago in County Tipperary. 

 It would be useless to give here any imperfect " description" of 

 it for the present, as such things require exactitude and compari- 

 son with other forms to fasten their specialities on the recollection, 

 if not figures. He would only here note that though it must be 

 regarded as truly a Cosmarium (perhaps coming nearest C. com- 

 missiorale) , it was amongst other characters marked by the 

 possession of a very minute but evident mucro at each opposite 

 lateral extremity of the segments, thus somewhat arthrodesmoid 

 in its external characters. The specimens taken for these wide- 

 apart sources were absolutely identical in the most minute detail, 

 and he did not think that in all the species there was one more 

 readily recognised than this, once one had got a grasp of its 

 specialities in all aspects, nor were there many prettier wee things 

 often under view than that now claiming the Club's attention. 



