CONTENTS 



General Meeting, 20th November, 1857. 



Pack. 



Annual Address, by Rev. Professor ITaugh ton, V. P., .... 1 

 Robert Patterson, M. R. I. A., — "Note of the Occurrence of the 



Hi/peroodon Ihit:kopf( Bottle- nosed Whale)," 4 



Dr. Dickie, — " On the Teeth of the Hyperoodon," 6 



Election of Officers for 1857-58, 6 



18t? t December. 



Robert Patterson, M. R. I. A.,— u Memoir of the late Robert Ball, 

 LL. D., M. R. I. A., President of the Association," .... 7 



C. Spence Bate, F. L. S., — " Description of a New British Hip- 

 polyte" (with a Woodcut), , . 48 



Mr. Edwin Burchall, — " On Additions to the Irish Lepidoptera," 50 



Professor J. Reay Greene, — " On the present State of our Know- 

 ledge of the Coelenterata," 52 



Robert M'Donnell, M. D., M. R.I. A.,—" On the Electrical Nature 

 of the Power possessed by the Actinia of our Shores," ... 55 



Rev. Professor Haughton, V. P., — " On Euomphalus cristatus and 

 RegincB (nov. spec.)" (with two Plates), 60 



15th January, 1858. 



Rev. Eugene O'Meara, — " Catalogue of Diatomacere collected in 



Powerscourt, county of Wicklow," 62 



Professor Harvey, V. P., — " On a Peculiar Form of Fibro-cellular 



Tissue," 63 



19tii February. 



Lieutenant Crozier, R. E., A. B., — " A Catalogue of Lepidoptera 

 captured by him during the past Summer near Chatham," . 65 



David Moore, M. R. I. A., A. L. S., — " On the Occurrence of a 

 singularly Metamorphosed State of Bryum sanguineum; and 

 on the Discovery of some additional Species to the Irish Fauna" 

 (with a Woodcut), 70 



19th March. 

 Professor J. Reay Greene, — " On the Genus Lucernaria," ... 73 

 Professor Wyville Thomson, — " On New Genera and Species of 

 Polyzoa from the Collection of Professor W. II. Harvey, Tri- 

 nity College, Dublin" (with five Plates). Part 1 77 



ICth April. 



Mr. William Archer, — " On a New Genus, and four New Species 

 of Desmidiaceae ; with List of additional Species to the Irish 

 Flora" (with a Plate), 94 



Mr. W. Archer, — "Notice of the Occurrence of a Unicellular 

 Alga, believed to be allied to that alluded to by M.llofmeister," 1 24 



