436 PROCEEDINGS OF THE SOCIETY. 



Mr. C. H. Huish, F.R.M.S. : — Collection of Mycetozoa, embracing 

 representatives of thirty-four genera. 



Miss Gr. Lister, F.L.S. : — 



1. Amaurochdetefuliginom (Sow.) Macbride. Swarm-cells dividing ; 



theii' nuclei undergoing mitosis. 



2. Badhamia utricularis Berk. Plasmodium showing resting nuclei 



(" diploid," with sixteen chromosomes). 



3. Ditto. Plasmodium with nuclei dividing by mitosis. Prepared 



by J. J. Lister. 



4. Ditto. Part of section of young sporangium showing highly 



vacuolated protoplasm, and nuclei undergoing reduction 

 division prior to spore-formation. 



5. Ditto. Spore mother-cells from a maturing sporangium dividing 



into spores ; the daughter nuclei are " haploid " and have 

 eight chromosomes. 

 5a. Trichia decipiens. Section of young sporangium with dividing 

 nuclei. Prepared by J. J. Lister. 



6. Ceratiomyxafructiculosa. Mature sporophores. 



7. Ditto. Expanding stage of very young sporophore showing a 



solid network of plasmodium ; nuclei in resting stage. 



8. Ditto. " Expansion stage " passing into " network stage " ; the 



Plasmodium is almost entirely concentrated on the surface of 

 the young sporophore in a thick layer. 



9. Ditto. " Network stage " ; the plasmodium spreads over the 



surface of the sporophore in a thin close net ; it is at this 

 stage that the nuclei undergo reduction division. 



10. Ditto. " Network stage " passing into the " Mosaic stage " in 



which the spore mother-cells are formed. 



11. Ditto. Cells passing from "Mosaic stage" to that of stalked 



spores. 



12. Ditto. Transvei-se section of a group of young anastomosing 



sporophores, showing the young peg-top shaped spores, each 

 with a nucleus ; the gelatinous substance of the sporophores 

 strongly stained Prepared by J. J. Lister. 



13. Barbeyella minutissima Meylan. Sporangium. This minute 



species has hitherto been found only in the Jura Mountains 

 by M. Ch. Meylan. 



14. Clastoderma deharyanum Blytt. Sporangium. This minute and 



widely distributed species has not yet been recorded from 

 Britain. It appears to be nearly related to BarieyeUa. 



15. Echinostelium minutum deBavry. Sporangium. This very minute 



species has been found three times in Britain, twice by Miss 

 Lorrain-Smith and once by the Rev. ^\. Cray. It is closely. 

 related to Clastoderma. 



Drawings were shown from preparations made by Dr. Jahn, of the 

 Berlin University, showing dividing nuclei in the " network stage." 



New Fellow.— Mr. E. Marshall Hall, K.C., M.P., was elected an 

 Ordinary Fellow of the Society. 



