154 vine : fossil polyzoa: additions to the cretaceous lists. 
vol. ix., and "Further Notes," vol. xi.) described some of the 
Microzoa derived from the Coprolite bed at Coldham Common, and as 
I have no fresh material from this peculiar horizon the student is 
referred to those papers for special details of the groups described: — 
Polyzoa, Entomostraca, and Foraminifera. So far as I am aware 
species of Polyzoa derived from the Gault of Folkestone are very rare. 
I. Probosclna Clementina, sp. n., pi. VI., fig. 5. 
Not Diastopora Clementina, d'Orb, pi. 636, figs. 1-2. 
The figure of D. Clementina, given by d'Orbigny, is really a 
Proboscina, but as I reserve the term Diastopora for another form 
which is described below, it may be well to direct the attention of the 
Palaeontologist to these pecularities of Zoarial growth. 
Zoarium adnate, flabelliform. Zocecia generally adherent by 
their whole length., but occasionally raised towards the distal 
extremity, more particularly in the earlier cells of the Zoarium ; 
the surface of the Zocecia are either slightly rugose or marked 
with transverse lines. Apertures small, peristomes prominent. 
Locality and Horizon : Gault in situ, Barnwell, Cambridge. 
II. Diastopora Clementina, d'Orb. 
Berenicea Clementina, d'Orb., Terr. Cret., p. 865, pi. 636, figs. 1-2. 
In his description of this species d'Orbigny says "discoidale ou 
flabelliforme," and in all probability the author had satisfactory 
evidence of this fact. I have a very large Zoarium of this species 
derived from the Folkestone Gault which is really disciform. In other 
respects I cannot see that the British example, except in size, differs 
in any material particular from the French. The cells of the central 
portion of the Zoarium are however more closely compacted together 
than in the outer portion, where the cells are well separated and the 
transverse lines are not so distinct as in the earlier stages of growth. 
The Zoarium is about three-eights of an inch in length and breadth. 
Habitat : On the beak of a Terebratula. 
III. Membranipora Gaultina, Vine, pi. VI., fig. 15. 
1890. Quart. Journ Geol. Soc, vol. xlvi., p. -484. 
Proc. Yorksh, Geol. Soc, vol. xi., p. 385 
