CONTENTS. 
Proceedings of the Botanical Society of Edinburgh ; Linnzean Society ; 
v 
Page 
MBOLOSIGA SOCIOL NG | daca erst. cus oh snenineneasonsusscchuspearacsese 202—225 
Descriptions of Owls presumed to be undescribed, by John Cassin ; 
Descriptions of new Marine Shelis, by T. A. Conrad; Meteoro- 
logical Observations and Table ..........sssesesescscsceteesees 2LI——202 
NUMBER XXII. 
XXIV. Description of two new species of Floscularia, with remarks. 
By W. Murray Dosis, M.D., F.B.S.E., Member of the Royal Medical 
aud Clinical Societies of Edinburgh. (With a Plate.) ....... cee sees 
XXV. Observations on Mr. Hancock’s paper on the Excavating 
sponges By JonmMornts,.FoG.Shd <adessiees <<accdestsecean dccps dseeseaes 
XXVI. On the Branchial Currents of the Bivalve Mollusca. By 
JGSHUAG MRD Hees LS Cay cess. eccosededecencacreecs seeders ssessesneeetsccasr sectors 
XXVII. Description of three new Genera and Species of Snakes. 
gem Bie Ga AMAR ES Qa ias occ vase netaducieiiso ss ctevews'sueose0 eu caine doceevenesdessees 
XXVIII. Contributions to the Botany of South America. By Joun 
AVN ese Clee Hic evesen SE cll s Seva dag nscev'e+s csnaceetecuateseniaetsvoescosecessaces.« 
X XIX. On the extinct and existing Bovine Animals of Scandinavia. 
By PE CO NIBSSON GM INING, 1. ..cccccccscecasodeacacsscresesecaes BAricdcconchsee 
XXX. Observation of some of the Phases of Development of the 
Trichodina pediculus (?). By J. T. Arxince, A.B., M.B. (Lond.), 
Member and Student in Anatomy of the Royal College of Surgeons. 
ROW leete EeLAGOd) lee at ceisicaicidsmaers caentiese’s avitgen pce ooseaseeesinasenesatiicn seaman 
New Books :—The Rudiments of Botany: a familiar Introduction to 
the Study of Plants, by A. Henfrey, F.L.S. &c. ....0.5.0.0200.0.0000 
239 
242 
246 
269 
274 
Proceedings of the Linnean Society ; Zoological Society ......... 275—296 
On the Velvet-like Periostraca of Trigona, by J. E. Gray, Esq.; The 
Tortoise-shell of Celebes; Notice of some Mollusca recently taken 
by George Barlee, Esq., off Lerwick, by J. G. Jeffreys, Esq., 
F.R.S. ; Descriptions of new Freshwater Shells, by T. A. Conrad ; 
Meteorological Observations and Table .........sssseeereeeeees 296—304 
NUMBER XXill. 
XXXI. Notice of the occurrence on the British coast of a Burrow- 
ing Barnacle belonging to a new Order of the Class Cirripedia. By 
ALBANY ELANCOCcK, Esq? / (With) two Blates.)) ot. oss.srs-0cecasesessveens eee 
XXXIT. Note on the genus Siphonotreta, with a description of a 
new Species. By Joun Morris, F.G.S. (With a Plate.) .......00... 
315 
