CONTENTS. Y 



XVII. An Account of some rare Went Indian Crustacea. 



By the Rev. Lansdown Guilding, B.A. F.L.S. p. 3J4 



XVIII. Observations on some of the Terrestrial Mollusca of 

 the West Indies. By the Rev. Lansdown Guilding, 

 B.A. F.L.S. - p. 339 



XIX. Descriptions of two new Species of Erythrina. By 

 Felix de Avellar Brotero, Professor of Botany at Coim- 



bra, F.M.L.S. ------ p. 342 



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 - - - p. 353 



XXI. Some Account of a Collection of Arctic Plants formed 

 Z>3/ 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. E?/ William Jackson Hooker, LL.D. 

 F.R.S. L.S. and H.S. Communicated by the Council 



of the Horticultural Society of London - p. 360 



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. 395 



XXIII. Descriptions of two Species of Antelope from India. 

 By Major-General Thomas Hardwicke, F.R.S. and 

 L.S. S^c. - p. 518 



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. Sj-c. - p. 525 



XXV. Ana- 



