CONTENTS. vii 



tisually termed Affinity and Jnulogi/, selected from t/ie C/a.ss of Insects. 

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



XXIV. A Xote upon tlie Anatomy of tlie Roots of Ophry(le;e. By John 

 LiNDLEY, P/i.D., F.R.S. 8^- L.S., Professor of Botany in Vnirersify Col- 

 lege, London 423 



XXV. On the Heliainphora 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 Assatn. By the Rev. Frederick 

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



XXVII. Observations on the Cause of El-got. By Mr. J any 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 Evgui of Rye. By FR.'.^cis Baver, Esq., F.R.S. 8f L.S. . 475 



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

 PiUilaiia globulifera. Jn 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. Li a Letter to R. H. Solly, Esq., F.R.S. &j 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 Disponiin. 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 Jirst 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- 

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



