752 
THE “VOYAGE OF H.M.S. CHALLENGER. 
British Museum, upon which Carpenter’s description of the genus is based, should be 
distinguished by the specific name Cycloclypeus carpenteri. Some of these specimens 
are almost unique amongst discoidal Foraminifera in point of size, presenting a diameter 
of 2-^ inches (63 mm.). The smaller species now described has been named after 
Prof. Gurnbel of Munich, whose researches upon the closely allied genus Orbitoides 
are well known to Rhizopodists. 
The specimens of Cycloclypeus guembelianus were dredged off Kandavu, Fiji Islands, 
at a depth of 210 fathoms. 
Sub-family 5. (?) Eozooninse. 
The much debated question of the origin and structure of Eozoon lies outside the 
scope of the present Report. It may however be stated that according to the views of 
Dawson, Carpenter, Rupert Jones, and others, Eozoon canadense, the type of the genus 
instituted by the first-named author, is a fossil Foraminifer, found in sessile tufts or 
patches of considerable size ; formed of chambers arranged at first in thin layers more or 
less regularly superimposed, but subsequently irregularly combined and acervuline ; the 
portions representing the calcareous skeleton traversed by long branching canals of 
peculiar form and disposition. 
On the other hand it is maintained by King and Rowney, Carter, Moebius, and those 
who follow them that the structures referred to are of purely mineral origin, and require 
no organic hypothesis for their explanation. 
