A 



MEMOIR 



ON THE 



Palaeozoic Reticulate Sponges 



CONSTITUTING THE FAMILY 



DICTYOSPONGID^. 



BY 



JAMES HALL 



STATE GEOLOGIST AND PALAEONTOLOGIST 



IN. COLLABORATION WITH 



JOHN M. CLARKE 



ASSISTANT STATE GEOLOGIST AND PALAEONTOLOGIST 



Part II 



CONTINUED FROM THE FIFTEENTH ANNUAL REPORT OF THE STATE GEOLOGIST) 



