CON T E N T S. 



Page. 



I. On a new OsciUatoria, the colouring substance of Glaslough 

 Lake, Ireland. By James L. DlUKMOHD, M.D., Professor of Ana- 

 tomy in the Royal Belfast Institution 1 



II. Some Remarks on the Germination of Lim nan the mum lacunosum. 



By Dr. Gkisbbach. (With a Plate.) 6 



III. Contributions to the Natural History of Ireland. By Wil- 

 liam Thompson, Esq., Vice-President of the Belfast Natural History 

 Society 12 



IV. On some new Species of Quadrupeds and Shells. By John 

 Edward Gray, F.R.S 27 



V. Prodromus of a Monograph of the Radiata and Echinodermata. 



By Louis Agassiz, M.D 30 



VI. Miscellanea Zoologica. By George Johnston, M.D., Fellow 



of the Royal College of Surgeons of Edinburgh. (With Plates) .... 44 



VII. Information respecting Botanical Travellers 56 



BIBLIOGRAPHICAL NOTICES. 



Poissons d'Eau douce d'Europe, par Louis Agassiz, M.D 69 



Das System der Pilze, von Dr. F. Nees von Esenbeck und A. Henry. . 69 



Plantes Cryptogames de France, par M. I. Desmazieres 69 



Magasin de Zoologie, par F. E. Guerin-Meneville 70 



PROCEEDINGS OF LEARNED SOCIETIES. 



Linnaean Society : — Mr. C. Babington on the Structure of Cuscuta 

 europcea 71 



Zoological Society : — Dr. A. Smith on the genus Squalus 72 



Royal Society of Edinburgh : — Mr. J. Stark on the Food of the Ven- 

 dace, Herring, and Salmon ; Mr. Shaw's Experiments on the Growth 

 of the Fry of the Salmon 74 



Entomological Society : — Extract from the Address of the President 

 on the Fourth Anniversary 76 



Botanical Society : — Extract from the First Annual Report ........ 78 



MISCELLANEOUS. 



On a new Trilobite (Calymene Rowii) 79 



Fossil Argonauta 80 



Generation of Pteroptus vespertilionis 80 



