4040 The Zoologist — June, 1874. 



swamp of hot mud, also full of Botryococcus unmixed with Oscillatorioe. 

 The exact temperature of the hot springs was not taken. The Alga3 appear 

 to resemble those described by Rabenhorst as growing in warm springs in 

 Europe. In a warm stream of about 95° F. a Conferva was found growing 

 amongst the fibres of a moss. The neighbouring lake of Furnas contains 

 several patches from which sulphurous gas is discharged, and is rich in 

 various Alga3, such as Nostoc, Oscillatoria, Hydrodictyon, &c. "Note 

 ou the foregoing communication." By Prof. Thiselton Dyer. The Diatoms 

 sent home by Mr. Moseley were submitted to the Rev. E. O'Meara, who 

 found them to belong to species of the most frequent occurrence in fresh 

 water, apparently in no way affected by the high temperature of the water. 



May 7, 1874. — G. Busk, Esq., Vice-President, in the chair. 



Mr. J. R. Jackson exhibited a piece of copal from Zanzibar riddled by 

 ants. After having been some time in the Kew Museum, the living 

 creature was found in the copal and sent to Mr. F. Smith, who determined 

 it to be a species of Termes or white ant, Eutcrraes lateralis of Walker. 

 Great interest in the specimen presented was expressed by entomologists 

 present, who had never seen a white ant alive, Mr. R. M'Lachlan remarking 

 that a species introduced in this way to the Botanic Gardens at Vienna had 

 become a great pest in the hothouses. 



The following paper (amongst others) was read: — "On some Atlantic 

 Crustacea from the ' Challenger' Expedition." By R. v. Willeraoes-Suhm. 

 Communicated by Prof. Wy ville Thomson. Among the many deep-sea crus- 

 taceans which have been brought up cither by the dredge or the trawl during 

 the 'Challenger's' cruise in the Atlantic, the most interesting are described 

 in the present paper — in addition to descriptions of both sexes of the inte- 

 resting Nebalia from the shallow water of Bermuda, some remarks on the 

 male and the structure of Cystosoma (Thaumops), and some additions to our 

 knowledge of the natural history and development of a land-crab from the 

 Cape-Verdes Islands. More detailed descriptions of these forms are given 

 than in the papers already printed elsewhere, as well as an attempt to settle 

 their systematic position. The paper is divided into seven parts, as follows : — ■ 

 (]) Ou a blind deep-sea Tanaid ; (2) ou Cystosoma Neptuni (Thaumops pel- 

 lucida): (3) on a Nebalia from Bermudas; (4) on some genera of Schizopoda 

 with a free dorsal shield ; (3) on the development of a land-crab ; (6) on a 

 blind deep-sea Astacus ; (7) on Willemoesia (Grote), a deep-sea Decapod 

 allied to Cryon. 



Zoological SociExr of London. 



April 21, 187i. — The Viscount Walden, F.R.S., President, in the chair. 



The Secretary read a report on the additions that had been made to the 



Society's Menagerie during the mouth of March, 1874. Amongst these 



