CONTENTS. vii 



usually termed Jffinity and Analogy, selected from the Class of Insects. 

 By J. O. Westwood, Esq., F.L.S., 8^c page 409 



XXIV. A Note upon the Anatomy of the Roots of Ophrydeae. By John 

 LiNDLEY, Ph.D., F.R.S. 8g L.S., Professor of Botany in University Col- 

 lege, London 423 



XXV. On the Heliamphora nutans, a new Pitcher-plant from British Guiana. 

 By George Bentham, Esq., F.L.S 429 



XXVI. Descriptions of some new Insects, collected in Assam by William Grif- 

 fith, Esq., Assistant-Surgeon in the Madras Medical Service, and at- 

 tached to the late Scientific Mission to Assam. By the Rev. Frederick 

 William Hope, M.A., F.R.S. 8f L.S. 435 



XXVII. Observations on the Cause of Ergot. By Mr. John Smith, A. L.S. 449 



XXVIII. Observations on the Ergot of Rye, and some other Grasses. By 

 Edwin J. Quekett, Esq., F.L.S 453 



•XXIX. On the Ergot of Rye. By Francis Bauer, Esq., F.R.S. 8f L.S. . 475 



XXX. Observations on the Structure and Development of the Organs of 

 Pilularia globulifera. In a Letter to R. H. Solly, Esq., F.R.S. 8f L.S. 

 By William Valentine, Esq., F.L.S. 483 



XXXI. Supplementary Observations on the Development of the Theca, and on 

 the Sexes of Mosses. In a Letter to R. H. Solly, Esq., F.R.S. 8f L.S. 

 By William Valentine, Esq., F.L.S. 499 



XXXII. Notice of a Plant which produces perfect Seeds without any apparent 

 Action of Pollen. By Mr. John Smith, A.L.S. 509 



XXXIII. A Monograph of the Genus Disporum. By David Don, Esq., 

 Libr. L.S., Prof Bot. King s Coll. Lond. 513 



XXXIV. A Monograph of Streptopus, with the Description of a new Genus 

 now first separated from it. By David Don, Esq., Libr. L.S., Prof. 

 Bot. King's Coll. Lond. 525 



XXXV. On some new Brazilian Plants allied to the Natural Order Bur- 

 manniacese. By John Miers, Esq., F.L.S. 535 



