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Show CONTENTS (continued). March 16, 1880 (continued). 3. On a Collection of Land and Freshwater Shells made during a short Expedition to the Usambara Country in Eastern Africa, with Descriptions of seven new Species. By ALFRED. E. CRAVEN, F.R.G.S., F.G.S., F.L.S., F.Z.S., &c. (Plate XXII.) 216 4. On tbe Names to be applied to certain Echinoidea. By F. JEFFREY BELL, B.A., F.Z.S. April 6, 1880. Mr. Arthur E. Brown. Letters from, relating to the birtb of an Elephant in a menagerie at Philadelphia 222 1. On the Fishes of Afghanistan. By FRANCIS DAY, F.Z.S 224 2. On Ziphius novce-zealandice. By Prof. JULIUS VON HAAST, Ph.D., F.R.S., C.M.Z.S., Director of the Canterbury Museum, Christchurch, New Zealand. (Plate XXIII.) 232 3. On the Cranial and Dental Characters of the Canidae. By T. H. HUXLEY, F.R.S 238 April 20, 1880. The Secretary. Report on the additions to the Society's Menagerie in March 1880 .... Prof. Owen, C.B., F.R.S. Notice of a Memoir on the new and little-known species of Cephalopoda 288 Dr. M. Watson. Notice of a Memoir on the female organs of the Proboscidea, as observed in a specimen of the Indian Elephant 288 1. On the Land-Molluscan Genus Girasia of Gray, with Remarks on its Anatomy and on the Form of the Capreolus of Lister (or Spermatophore) as developed in Species of this Genus of Indian Helicidae. By Lt-Col. H. H. GODWIN-AUSTEN, F.Z.S., F.R.G.S., &c. (Plates XXIV.-XXVII.) 289 2. On the Duration of Life of the Animals in the Zoological Garden at Frank for t-on-Main. By Director Dr. M A X SCHMIDT 299 3. On some new and little-known Spiders of the Genus Argyrodes, Sim. By the Rev. O. P. CAMBRIDGE, M.A., C.M.Z.S. (Plates XXVIII.-XXX.) 320 4. On the Shells of Lake Tanganyika and of the Neighbourhood of Ujiji, Central Africa. By E D G A R A. SMITH. (Plate XXXI.) 344 5. On the External and Structural Characters of the Male Spirula australis, Lam. By Prof. O W E N , C.B., F.R.S., F.Z.S., &c. (Plate XXXII.) ..' 352 |