84 PROCEEDINGS OF THE 



addressed to Charles Louis L'Heritier, at Paris, in which he men- 

 tioned a visit to Oxford with Sir Joseph Banks and J. Dryander, 

 for the purpose of looking over the plants and drawings of 

 Sibthorp, who was then lecturing there ; and added some critical 

 remarks on several species of Sida which L'Heritier had sent him 

 for determination. 



Mr. Middleton also exhibited an engraved portrait of Sir J. E. 

 Smith from the ' Gentleman's Magazine,' 1828, which, with the 

 letter, he presented to the Society. 



Mr. E. Enock, E.L.S., with the aid of the Lantern, exhibited 

 several photomicrographs and photographs of living insects, and 

 gave an illustrated account of the life-history and metamorphoses 

 of a Dragonfly (^schna cijanea). 



The following papers were read : — 



1. " Note on Syllis vivipara." By E. S. Goodrich, F.L.S. 



2. "On the genera Phceoneuron, Gilg, and Dicellandra, Hook, f." 

 By Dr. Otto Stapf, A.L.S. 



3. " On the Structure and Affinities of Echiurus umcinctus." 

 By Miss A. L. Embleton, B.Sc. (Communicated by Prof. G. B. 

 Howes, Sec. Linn. Soc.) 



June 21st, 1900. 



Dr. Albeet C. L. G. Gunther, F.E.S., Vice-President, 

 in the Chair. 



The Minutes of the last Meeting were read and confirmed. 



Messrs. Richard John Tabor, Henry Francis Tagg, and Ernest 

 Stanley Salmon were admitted Fellows of the Society. 



The Chairman announced with deep regret the loss which the 

 Society had sustained by the sudden death at Florence on June 11th 

 of Mr. AValter Percy Sladen, a former Vice-President of the 

 Society, and Zoological Secretary from 1885 to 1895. Mr. B. 

 Daydon Jackson, for ten years his colleague, bore testimony to- 

 Mr. Sladen's untiring devotion to the interests of the Society, to 

 his willing co-operation in all that concerned its welfare, and to 

 his amiability of disposition which had endeared him to all. 



Prof. M. M. Hartog, F.L.S., exhibited and made remarks on 

 flowers of new Abutilon-seedlinga, recently raised by him, and 

 pointed out the extreme variability shown in the form of many 

 of the leaves. 



Dr. O. Stapf, A.L.S. , exhibited fruits of various forms of Trapa 

 from Europe, China, and India, and discussed the differentiation 

 of the genus into species. He was inclined to recognize five 

 species which inhabit fairly well-defined geographical areas ; but 

 as the discrimination of these depends chiefly on the armature and 

 sculpture of the mature fruit (the flowers being in some cases- 



