CONTENTS. 
XVII. An Account of some rare West Indian Crustacea. 
By the Rev. Lansdown Guilding, B.4. F.L.S. ` p. 
XVIH. Observations on some of the Terrestrial Mollusca of 
the West Indies. By the Rev. Lansdown Guilding, 
B:A.F.L.S. - : - - - E p. 
. XIX. Descriptions of two new Species of Erythrina. By 
Felix de Avellar Brotero, Professor of Botany at Coim- 
bra, F.M.L.S. - - - E E - p. 
XX. On the Insect called Oistros by the Ancient Greeks, and 
Asilus by the Romans. By William Sharp MacLeay, 
Esq., M.A. F.L.S. Communicated by the Zoological 
Club of the Linnean Society — - d oe p- 
XXI. Some Account of a Collection of Arctic Plants formed 
by Edward Sabine, Esq., F.R.S. and L.S., Captain in 
the Royal Artillery, during a Voyage in the Polar Seas 
in the Year 1823. By William Jackson Hooker, LL.D. 
F.R.S. L.S. and H.S. Communicated by the Council 
of the Horticultural Society of London - p. 
^ 00 PART III. 
XXII. Observations on the Natural Affinities that connect 
the Orders and Families of Birds. By Nicholas Ayl- 
ward Vigors, Esq. M.A. F.L.S. Communicated by 
the Zoological Club of the Linnean Society - p. 
XXIII. Descriptions of two Species of Antelope from India. 
By Major-General 'Fhomas Hardwicke, F.R.S. and 
ESTE OUTOTEOS. p. 
XXIV. Description of a new Species of Tailed Bat (Ta- 
phosous of Geoff.) found in Calcutta. By Major- 
General Hardwicke, F.R.S. and L.S. $c. -  p. 
330 
-342 
353 
360 
395 
518 
525 
XAV. Ana-- 
