vin CONTENTS. 



NtMHKl; PAGK 



XXVII. On an Entoproctan Polyzoon [Barentsia benedeni) new to the British 

 Fauna, with Remarks on Related Species. By James Ritchie, 

 M.A., B.Sc, Natural History Department, The Royal Scottish 

 Museum. (With One Plate), . . . . .835 



XXVIII. An Investigation into the Effects of Errors in Surveying. By Henry 



Briggs, B.Sc., A.R.S.M., . . .849 



Index, .......... 879 



