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Show Mr. H. B. F antham, B.Sc,, F.Z.S., exhibited and made remarks upon microscopic slides of Lcinkesterella tritonis, a Hsemogregarine parasitic in the blood-corpuscles of a Newt, Triton cristatus. This parasite was recently found by Mr. A. S. Hirst, F.Z.S., and the exhibitor, and their observations had since been independently confirmed by Dr. A. C. Stevenson. Mr. F. E. B eddard, F.R.S., read a paper entitled " A Contribution to the Knowledge of the Encephalic Arterial System in Sauropsida." Sir H arry J ohnston, G.C.M.G., K.C.B., read a paper containing criticisms of the Hon. Walter Rothschild's proposed classification of the Anthropoid Apes. He was disposed to agree with Mr. Rothschild's classification of the African Apes, but suggested that the proper transcription of the native name for the Bald Chimpanzee should be nkulunkamba instead of (as Du Chaillu wrote it) koolookamba. Sir Harry, however, could not agree with Mr. Rothschild's proposed change of the generic name of the Orang from Simia to Pongo; and although considering him right in applying the former name, at present used for the Orang, to the Chimpanzees, he was of opinion that either Satyrus or Pithecus was a far preferable name to Pongo for the Orang. ITe concluded the paper with a list of words used in several African languages for the name of the Chimpanzee, and with a precis of the history of European knowledge of the Anthropoid Apes down to the Eighteenth Century. Mr. K nud A ndersen contributed a paper on some species of Bats of the genus Rhinolophus, in the course of which he showed the progressive evolution from the Austro-Malayan R. simplex (allied to megaphyllus), through a long series of Oriental forms, to the W. Palaearctic R. ferrum-equinum, and a similar chain from the Oriental R. lepidus (allied to minor) to the W. Palaearctic R. blasii and R. euryale. R. hipposiderus was traced back to the Oriental R. minor. A slight difference between the British colony of R. hipposiderus and the Central European form of the same species was pointed out. All the Ethiopian species of Rhinolophus were shown to be of Oriental origin. A paper was read from Dr. E. B ergroth, C.M.Z.S., containing the results of his observations on the stridulating-organs and descriptions of five new species (two of which were referred to new genera) of the Hemipterous family Halyince. Dr. P. Chalmers M itchell, Secretary to the Society, read a paper entitled " On the Anatomy of Limicoline Birds, with special reference to the Correlation of Modifications." The paper dealt with the anatomy, chiefly muscular, of Charadriidce, Chioni-didce, GlareoltditJ, 7'hmocoridrp, (Edicnemidce, and Parridce, |