20 PROCEEDINaa OF THE LrS~NEAJf SOCIETY OP LONDON. 



The followaiig papers were read : — 



1. " Observations on Ants, Bees, and Wasps." — Part VIII. 

 Habits of Ants. By Sir John Lubbock, Bart., F.R.S., Pres. L.S. 



2. " On the Genus Plocamia, Schmidt, and on some other 

 Sponges o£ the Order Echinodermata." By S. O. Eidley, F.L.S. 



3. " On two Species of /S^owyi(?a from the Atlantic Sea-bed." 

 By Prof. P. Martin Duncan, P.R.S., P.L.S. 



4. " MoUusca of H.M.S. ' Challenger' Expedition."— Part X. 

 (Fam. Pleurotomidae, cont*) . By the Rev. R. Boog "Watson, F.L.S. 



The President gave the substance of a Circular received from 

 the Local Secretaries of the British Association inviting Fellows 

 of the Society to forward for exhibition at the Jubilee Meeting 

 in York (August 31) Instruments of Scientific Research and 

 such apparatus as might show historically, and otherwise, the 

 progress made during the last half-century. 



June 16th, 1881. 

 Sir John Lubbock, Bart., F.R.S., President, in the Chair. 

 The Minutes of the last Meeting were read and confirmed. 

 John Forrest, Esq., of Australia, iUexauder Somer\alle, Esq., 

 and Capt. John Thomas Wright were elected Fellows. 



Mr. W. Hood Fitch exliibited a set of drawings of new Orchids, 

 species of Odontoglossum . 



The Rev. H. Higgius showed a specimen of Holothuria which 

 had been got between Patagonia and the Falkland Islands. Tliis 

 he had identified as Psolus squamatus ; and it had been figured 

 by Otho Fred. Miiller in his ' Zoologia Danica.' 



The Secretary read a portion of a Letter addressed to him by 

 Mr. William Ferguson, of Colombo, in which lie mentioned 

 his having found Wolffia arrhiza, Wimm., in abundance in an 

 abandoned stone-quarry, covering the surface of the water ; and 

 that in a recent trip to the Kandyan country he had discovered 

 Adiantum cethiopicum, Linn., both these being new records for 

 Ceylon. 



Mr. J. Gr. Baker exhibited a specimen of the Inflorescence of 

 the Aloe Parryi, the source of the drug. Tliis was the first time 

 it had flowered in tliis country, although the product of the plant 

 had been kno\m for two thousand years. 



The following papers were read : — 



1. " On the Flora of the Kuram Valley, Afghanistan." — 

 Part II. By Surgeon-Major Aitchison, F.L.S. 



2. " On Central-African Plants collected by Major Serpa 

 Pinto." By Prof. Count Ficalho and W. P. Hiern, F.L.S. 



3. " Revision of the Idoteidae, a Family of Sessile-eyed Crus- 

 tacea." By Edward J. Miers, F.L.S. 



4. " On the Nostrils of the Cormorant {Plialacrocorax carlo)." 

 By Prof J. C. Ewart. Communicated by Gr. J. Romanes, Sec L.S. 



