( 315 ) 

 SCIENTIFIC SOCIETIES. 



Zoological Society of London. 



June 19th, 1894.— Dr. A. Gunther, F.R.S., V.-P., in the chair. 



Mr. Sclater exhibited the skin of a Monkey of the genus Cercopithecus, 

 and pointed out that it belonged to the local form referred to in his recent 

 paper on the Cercopitheci as Cercopithecus diana Ignitus. He also exhibited 

 the type specimen of Cercopithecus grayi, Fraser, which was formerly in 

 the Knowsley collection, and which, in his opinion, was identical with 

 C. erxlebeni, Pucheran. 



Mr. H. Scherren exhibited a bottle in which an amphipodous crustacean 

 (Amphithoe Uttorina) had built a nest with runs of sand and pieces of weed. 



Prof. Ray Lankester read a paper on the external characters which 

 distinguish the two Dipnoid fishes, Lepidosiren and Protopterus, and 

 expressed the opinion that they should be referred to distinct genera. 



Dr. G. H. Fowler exhibited the horns of a Fallow Deer belonging to 

 Mr. J. A. R. Wallace, of Loch Ryan, which showed the effect of the 

 removal of one testis on the development of antlers ; and made remarks on 

 the effect of different degrees of castration upon antlers, as shown by 

 specimens in the Museum of the College of Surgeons. The continuity 

 of variation displayed in the total lengths, and lengths of brow- and tray- 

 tines, in abnormal antlers in the Natural History Museum, was also 

 commented upon. 



Mr. P. Chalmers Mitchell gave an account of his observations on the 

 perforated flexor muscles in certain birds recently dissected in the laboratory 

 in the Society's Gardens. 



Messrs. R. R. Mole and F. W. Urich communicated biological notes 

 upon some of the Snakes of Trinidad, with a preliminary list of the species 

 of Ophidians recorded from that island. 



A communication was read from M. E. Simon, containing the second 

 portion of a memoir on the Spiders of the Island of St. Vincent, based on 

 specimens obtained through the agency of the Committee for the exploration 

 of the Natural History of the West Indies. 



Mr» W. E. Collinge communicated a description of a new species of 

 Slug of the genus Janella, from New Zealand, with a detailed account of 

 its anatomy. 



A communication was read from Mr. R. J. Lechmere Guppy, containing 

 an account of some Foraminifera from the Microzoic Deposits of Trinidad. 



Mr. Arthur E. Shipley read notes on some Nematode Parasites obtained 

 from animals formerly living in the Society's Gardens. 



Messrs. F. E. Beddard and P. Chalmers Mitchell gave an account of 

 the anatomy of Palamedea cornuta as compared with that of its allies. 



