vni 



57. Sponges in Waterworks. By W. N. Parkeb, Ph.D., 



F.Z.S., Professor of Zoology, University College, 

 Cardiflf 973 



58. A Revision of the Cyprinodont Fishes of the Subfamily 



Poeciliina?. By C. Tate Regan, M.A., F.Z.S. (Pis. 

 XCIX.-CI. and Text-figs. 168-173.)... 977 



59. On a Collection of Batrachians and Reptiles made by 



Dr. H. G. F. Spurrell, F.Z.S. , in the Choco, Colombia. 

 By G. A. BouLENGER, F.R.S., F.Z.S. (Pis. CII.- 

 CYIII. and Text-figs. 174-178.) 1019 



60. The Peroneal Muscles in Birds. By P. Chalmers 



Mitchell, M.A., D.Sc, LL.D., F.R.S., F.Z.S., 

 Secretary to the Society. (Text-figs. 179-190.) 1039 



6L On the External Characters and Biology of Bryde's 

 Whale {Balcenoptera brydei), a new Rorqual from 

 the Coast of South Africa. By 0rjan Olsen, 

 Zoological Laboratory, Christiania University. (Pis. 

 CIX.-CXIII.) 1073 



Alphabetical List of Contributors ix 



]S ew Generic Terms xvii 



Index of Scientific Names xix 



Index of Illustrations xliii 



