LTNNEAN SOCIETY OP LONDON. Iv 



3. " Notes on CoiUotiiea voluUlis, Mart., and some other Oen- 

 tianecs of Tropical America ;" by Dr. E. H. Grisebach, F.M.L.S. 

 (See ' Botanical Proceedings,' vol. vi.) 



November 21st, 1861. 

 G-eorge Bentbam, Esq., President, in the Chair. 



Edward Clapton, M.D., was elected a Fellow. 



Mr. Hanbury, F.L.S., exhibited specimens of the resinous wood 

 of Aquilaria Agallocha, Eoxb., a substance interesting as being 

 the Aloes or Lign. Aloes of the Bible ; and made some observa- 

 tions upon its production in Sylhet, Assam, and Cochin China. 



Dr. Cobbold, F.L.S., made some observations, illustrated by 

 sketches, on the mode of reproduction of Gyrodactylus elegans, 

 a parasite upon the common Stickleback, and found abundantly 

 by him in the Serpentine. 



The following Papers were read, viz. : — 



1. " On the Two Forms, or Dimorphic Condition, in the Species 

 of Primula ; and on their remarkable Sexual Relations ;" by 

 Charles Darwin, Esq., M.A., F.E.S., L.S., &c. (See ' Botanical 

 Proceedings,' vol. vi.) 



2. " Contributions to an Insect-Fauna of the Amazon Valley. 

 — Lepidoptera Heliconina \'' by Henry Walter Bates, Esq. Com- 

 municated by the Secretary. (See Abstract in ' Zoological Pro- 

 ceedings,' vol. vi.) 



December 5th, 1861. 

 George Bentham, Esq., President, in the Chair. 



Francis Ablett Jesse, Esq., and Charles John Leaf, Esq., were 

 elected Fellows. 



e2 



