236 PROCEEDINGS OF THE GEOLOGICAL SOCIRTY. 
most abundant form being Planorbulina Ungeriana. These Planor- 
buline are attached in considerable numbers to the plicated surfaces 
of Lhynchonella and Argyope. Of Cristellaria acutauricularis there 
are six specimens; whilst Polymorphina lactea, Dentalina com- 
munis (?), and Vaginulina striata have only yielded one each. As 
these have been obtained simply by washing the soft surfaces of 
several of the blocks, it is evident that the group must be abundantly 
represented in a fossil state on the Australian continent. 
Zoophyta.—This group is not represented in the series. The 
supposed coral (no. 10) of Professor M‘Coy’s list represents the i- 
ternal structure of a piece of fossil wood. 
Echinodermata.—In examining the decomposed surfaces of the 
Wollumbilla blocks, I have detected the presence of fragments of 
the spines of several forms of Echinodermata; and there are also 
numerous detached plates and portions of the columns of Penta- 
crinites. 
Two blocks found on the Mitchell Downs, and recently received 
by me from the Rey. W. B. Clarke, show that interesting remains 
belonging to this class will probably be found hereafter im this dis- 
trict, where boulders occur, derived from.a bed in great part com- 
posed of Pentacrinites. 
Polyzoa.—tlt is not improbable that this group may be nume- 
rously represented, as there are frequent indications of Polyzoa; but 
the worn condition of many of the shells to which they are e attached 
is unfavourable to their preservation. On a cast of a Cytherea from 
the Maranoa river numerous reticulated impressions show that its 
interior was almost coyered with them. Another form also occurs, 
with long cylindrical cells, belonging to Lepralia, which, hitherto, I 
believe, has not been found below the Red and Coralline Crag. 
Brachiopoda.—-The Queensland representatives of this group 
possess considerable interest from the fact that most of the species 
are new, and several peculiar forms are amongst them. There can 
be no doubt that the class is strongly represented in the deposit 
from which these blocks are derived; and it may be anticipated 
that at a future day more genera and species may be obtained from 
them. The only species to be recognized is the Lingula ovalis of 
the Kimmeridge Clay, or the LZ. subovalis of the Lower Greensand, 
which names probably refer to the same species. ‘This shell is most 
abundant, as many as fifteen examples being visible on the surfaces 
of a block only two or three inches square. Its presence assists in 
uniting the faune in several of the blocks which contain nothing 
else in common. Two species of Khynchonella occur, one of them 
being apparently very abundant. One of these, which J have named 
it. rustica, approaches very closely to R. concinna of the Great Oolite 
and Bradford Clay. <A third genus is represented by a shell (with a 
very finely punctated structure and closely striated exterior) to all 
appearance belonging to Verebratella, ane which genus (in the 
absence of internal structure) it is placed. It is the ‘largest of the 
Australian Brachiopoda; and I have named it 7. Davidsonii, after 
the paleontologist who has spent a life in the elucidation of this 
