MOORE—AUSTRALIAN MESOZOIC GEOLOGY. 943 
its separation. I have only seen one specimen, which is also from 
Wollumbilla. 
4, PENTACRINUS AUSTRALIS, sp.n. Pl. XVII. fig. 3, and Pl. XVIII. 
fies 1: 
Pelvis short, compressed, rounded; plates of the body and arms 
finely rugose ; scapule thick, supporting 10 arms, composed of 13 
plates, the hands bifurcating from cuneiform joints, the fingers being 
of considerable length, with 40 or more joints of varying thickness, 
to which are attached lengthened jointed tentacles. Interior of the 
pelvis disk-like or concaye, exhibiting a central pit. 
Two specimens of this fine and interesting species are from the 
Mitchell Downs, on the Amby river; and it is seen by the numerous 
arms that pass through the block of limestone that a whole colony of 
them must have been present. One of the specimens is lying on its 
side (exhibiting the base of the pelvis, with its columnar articulation), 
whilst three arms, with the base of two others, are exhibited. The 
second specimen shows the interior of the pelvis, and has the arms 
flattened out. Each arm, above the scapule, appears to have been 
about 6 inches in length. In a block from Wollumbilla a portion of 
a column, with 95 regular joints, is present, of probably the same 
species. Unfortunately some of the connecting joints of the arms 
have been washed out, though the impressions are left indicating 
their direction. 
CIRRIPEDIA (BALANUS ?). 
When the tests of the Australian shells are occasionally broken, or 
casts only are preserved, it may often be noticed that the interiors 
were covered by Polyzoa, Serpulee, and other parasitic animals. On 
the interior of Panopea are two disk-like impressions with fimbriated 
radiating surfaces ; and it was difficult to decide whether they might 
not be flattened Corals, or even Craiie. On consulting my friend 
Mr. Etheridge respecting them, he suggested that they might be the 
places of attachment of Balani or some other Cirripeds ; and on exa- 
mining the collection at Jermyn Street, analogous impressions were 
found produced by the attachment of these shells; so that, although 
no other traces of the shells have been found, the family may, I 
think, be added to the list. 
5. Lepratia(?) oorrtica, sp.n. Pl. XVII. fig. 2. 
Cells long, cylindrical, base soon becoming immersed, so as to re- 
semble Zubulipora or Diastopora. It occurs not unfrequently on the 
exteriors of the Wollumbilla fossils. 
Mr. Busk, who has examined the species, remarks that he has not 
before noticed it, and that it does not occur in a series (Tertiary) he 
had examined from Mount Gambier. The genus has not hitherto 
been found lower than the Cretaceous period. 
6. Angyorr WoLLUMBILLAENSIS, sp.n. Tl. X. figs. 8-5. 
Shell compressed, transyerse; hinge-line extending the entire 
