SCIENTIFIC SOCIETIES, 
Linnean Soctety or Lonpon. 
June 6, 1889.—Mr. CarrurHers, F.R.S., President, in the chair. 
Dr. John Anderson, Mr. J. G. Baker, Dr. Braithwaite, and Mr. F. Crisp 
were nominated Vice-Presidents. 
Mr. Digby S. W. Nicholl was admitted a Fellow; and the following 
were elected :—The Marquis of Lothian, Messrs. W. Williams, C. S. Wild, 
and W. Schaus, 
Prof. Martin Duncan exhibited under the microscope some beautifully 
mounted preparations of the ambulacral tentacles of Cidaris papillata, and 
drew attention to the fact, previously unrecorded, that the tentacles of the 
abactinal region of the test differ in form and character from those of the 
actinal region. The latter have a well-developed terminal disk, and are 
richly spiculated; whereas the former have no disk, but terminate distally 
in a pointed extremity with very few spicule. Mr. W. P. Sladen made 
some remarks on the significance of this dimorphism with reference to its 
archaic character, and its relation to the primitive forms of Echinoids and 
Asteroids. 
Mr. Narracott exhibited a singular fasciated growth of Ranunculus 
acris, found at Castlebar Hill, Ealing. 
Mr. H. B. Hewetson exhibited under the microscope a parasite of 
Pallas’s Sand Grouse, Syrrhaptes paradozus, taken from a bird shot in 
Yorkshire, and described as a species of Argas. Mr. Harting pointed out 
that an apparently different parasite, from the same species of bird, had 
been recently described by Mr. Pickard Cambridge (Ann. & Mag. Nat. Hist., 
May, 1889), under the name Hemaphysalis peregrinus. 
Dr. Cogswell showed some examples of Jerusalem artichoke and potatoe, 
to illustrate the spiral development of the shoots from right to left. 
Governor Moloney, C.M.G., of the colony of Lagos, exhibited a large 
collection of birds and insects from the Gambia, the result of twelve months’ 
collecting in 1884-85. The birds, belonging to 184 species, had been 
examined and named by Capt. Shelley. Amongst the beetles, of which 
89 species had been collected, he called attention specially to Galerita 
africana and Tefflus megelii, and to the Rhinoceros and Stag-horned beetles. 
Of butterflies there were 90 species, amongst which the most noticeable 
and characteristic were the Acreas and the pale green Eronia thalassina, said 
to be typically Gambian. The moths, of which some 220 species had been 
brought home, were named by Mr. Herbert Druce, and several had proved 
to be new or undescribed. A portion of this collection had been exhibited 
at the Indian and Colonial Exhibition of 1886, but had since been carefully 
ZOOLOGIST.—JULY, 1889. ¥ 
