CONTENTS. 



Tbansaotions of the Society— paob 



IV. — The Pkesident's Address. By C. T. Hudson, M.A., LL.D. 



(Cantab.) .. .. .. .. .. .. 162 



V. — Desceiption of a New Dipterous Insect, Psamathiomta 



PECTiNATA. By Julien Deby, F.E.M.S. (Plate IV.) ., .. 180 



SUMMARY OF CURRENT RESEARCHES. 



ZOOLOGY. 

 A, VERTEBRATA : — Smbryolog-y, Histology, and General, 

 o. Embryolog-y. 

 Sutton, J. Bland — Evolution of the Central Nervous System of Vertehrata .. ,. 187 



Oeb, H. — Development of Central Nervous Sijstem of Amphibians 188 



NanseN, F. — Protandric Hermaphroditism of Myxine 188 



BoHM, A. A. — Maturation and Fertilization of Ovum in the Lamprey 189 



Nelson, E. M. — Ohservalions on Human Spermatozoa 190 



ScHULZB, F. E. — Epithelial Glands in Batrachian Larvse . . .. .. 190 



Paokabd, a. S. — Factors in the Evolution of Cave Animals 191 



j3. Histology. 



ToBOK, L, — Division of Bed Blood-corpuscles in Amphibia 191 



y. General. 



Habtoq, M. — Adelphotaxy _ .. .. .. 192 



„ „ Functions and Homologies of Contractile Vacuole in Plants and 



Animals 192 



Beard, J. — Annelidan Affinities in Ontogeny of Vertebrate Nervous System .. .. 192 



WEMmmw-K, 3. Gr.— The Modern Cell-Theory 193 



B. INVERTEBRATA. 



KoLLiKEE, A. — Transversely Striated Muscular Fibre 193 



"Weismann, a. — Number of Polar Bodies 193 



Haddon, a. 0. — Irish Marine Fauna . . . . 194 



Heilpbin, a. — Marine Invertebrates of Bermuda Islands ,. .. .. 194 



WCoy's (F.) Zoology of Victoria 194 



MoUusca. 

 j3. Pteropoda. 



Gbobben, 0. — Morphology of Pteropods .. ., 194 



.y. Gastropoda. 



Klotz, J. — Generative Apparatus of Lymnseus 195 



Saint-Loup, R. — Anatomy of Aplysia 195 



Geenachee, H. — The Heteropod Eye .... ., 196 



Voiqt, W. — Entocolax Ludwigii, Parasitic in a Holothurian .. .. 197 



Uliont, J. — Mouth-parts of Aneylus fluviatilis and Velletia lacustris .. .. .. 197 



5. Liamellibrauchiata. 



Eawitz, B. — Edge of Mantle of Acephala .. 198 



Galeazzi, R. — Nervous Elements of Adductor Muscles of Lamellibranchs .. .. 201 

 MoBiTJS, K. — Swelling of Foot of Solen pellucidus 201 



Mollusc oida. 

 j8. Bryozoa. 

 Fewkes, J. Walteb — Stalked Bryozoon .. .. .. 201 



