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 Welch, Dr. Frederick D., F.Z.S. 



Observations on different Gibbons of the Genus Hylo- 

 bates now or recently living in the Society's Gardens, and 

 on Symphalangus syndactylus, with Notes on Skins in 

 the Natural History Museum, S. Kensington 353 



Woodland, William N. F,, F.Z.S., The Zoologicri Depart- 

 ment, University College, London. 



On the Structure and Function of the Gas Glands and 

 Retia Mirabilia associated with the Gas Bladder of some 

 Teleostean Fishes, with Notes on the Teleost Pancreas. 

 (Plates II. -IX. and Text-figs. 53-62.) 183 



