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CONTENTS. Vv 
Page 
XXI. Catalogue of Irish Zoophytes. By Arruur Hit Hassatt, 
Esq., M.R.C.S.L. (With Three Plates.)..........1ssseeeees AGL Vee sires 166 
XXII. A Synopsis of the Genera and Species of the Class Hypo- 
stoma (Asterias, Linneus). By Joun Epwarp Gray, Esq., F.R.S., 
Keeper of the Zoological Collection in the British Museum ............ 175 
XXIII. On the true Method of discovering the Natural System in 
Zoology and Botany. By Hueu E. Srricxxanp, M.A., F.G.S., &e.... 184 
XXIV. Catalogue of the Land and Freshwater Mollusca of Ireland. 
By Wa. Tuomrson, Vice-President of the Natural History Society of 
Belfast .........1.. beepaneessbbyns ees Soda ceucdsuecelecsdsnsssegeeeesssqcevnoveesen 194 
XXV. On some Objections to the Theory of attributing the Natural 
Terraces on the Eildon Hills to the action of water. By J. E. Bow- 
IS BURIED. Pith Coy Needed beeasbsbovecWasihoesteccdcssceicesesccteteats 207 
New Books:—The Flora of Yorkshire, by Henry Baines, Sub-curator 
to the Yorkshire Philosophical Society——A Flora of Shropshire, 
by W. A. Leighton, Esq., B.A., &c.—Tijdschrift voor Natuurlijke 
Sresemiedenis en Physiologic. .......cccsscccossssoscsvesescnsce we. 215—219 
Proceedings of the Zoological Society ; Linnzean Society ......... 219-—236 
Note on Mr. Hassall’s Catalogue of Irish Zoophytes; Obituary: Mr. 
Vigors; Red-breasted Snipe; Hoopoe, Little Stint; Fossil Fish ; 
Remarks on a specimen of Kingfisher, supposed to form a new 
Species of the Zanysiptera; Fountain Gum Bottle; Carinaria 
vitrea, Lamarck; Meteorological Observations and Table... 236—240 
NUMBER XXXVII. 
XXVI. Zoo-Geological Considerations on the Freshwater Mollusca. 
By Epwarp Forszs, Esq., M.W.S., For Sec. B.S., &. cc..se-cseecees Re. 
XXVII. A Catalogue of Shells from the Crag. By S. V. Woop, 
Se A So Meek sea bieciner di acuecouen ston nie thi caer enkbs vck<cag es tun cs . 243 
XXVIII. Carabideous Insects collected by Mr. Darwin during the 
Voyage of Her Majesty’s Ship Beagle. By G. R. Warzruouse, Esq. 254 
XXIX. Excerpia Botanica, abridged from Foreign Journals. By 
W. A, Leienton, Esq. B.A., F.B.S.E., &c. 
On the Structure of the Hairs on the Pericarp of certain Plants. 
BE LIB O RIO Oise ics avis + tie Ghee cnacessyeesnaneessacsesccyetas se 257 
Conspectus of the Genera and Species of the Lemnacee. By 
Be EIDE 5 io cc coins ussbanesnbeasseascevie sects ssabedsaiseres. 259 
XXX. Contributions to the History of the Development of the De- 
capod Crustacea. By HEInRIcH RATHKE  .......scecescsccccscececsccscees 263 
XX XI. Report of the Results of Researches in Physiological Botany 
for 1839. By the late Professor Meyen, of Berlin.................. veosee 269 
XXXII. A Synopsis of the Genera and Species of Starfish. By 
meme mowaun Gray, eq.) FRB Bee see siete. eek cei ceieccees 275 
XXXIII. Some Remarks on the British Species of the Genus 
Maries. By T.C. Eyton, Esq., F.L.S. oc... eee eee dy csedeneaeciaestewekes 290 
