Mem. Мат. Mus. Vicr., 16, 1949 
AN ECHINOID FROM THE TERTIARY (JANJUKIAN) 
OF SOUTH AUSTRALIA 
BROCHOPLEURUS AUSTRALIAE sp. nov. 
Т? Ву Н. Barraclough Fell, 
Victoria University College, Wellington, New Zealand. 
Plate I. 
(Received for publication October 13, 1948.) 
Through the courtesy of the National Museum of Victoria, a 
collection of Australian Tertiary Echinoids was lent to me for 
comparison with similar material from New Zealand. The results 
of this will be published later, but, in the meantime, it is desirable 
to record an undescribed species included in the collection of the 
Museum which has been confused with Paradoxechinus novus 
Laube (1869). The species is referable to Brochopleurus Fourtau 
(1920), which genus differs from Paradoxechinus in a number of 
respects, the chief being that, in the former, the primary tubercles 
are each surrounded by a distinct radiating sculpture, whereas 
in the latter there is no such radiating sculpture, the primary 
tubercles being joined to their neighbours by straight lines of 
raised sculpturing, forming therefore a zig-zag line along each 
amb and interamb. 
This appears to be the first record of the genus Brochopleurus 
from the Southern Hemisphere, Egypt and India being the two 
areas where it has hitherto been recognized—in both cases from 
strata regarded as Miocene. A very similar species occurs in the 
Waitakian stage (Middle Oligocene) of New Zealand, but further 
study will be required to determine if it is identical with the 
species from Australia. | 
As the genus Brochopleurus will be dealt with at greater length 
with other Tertiary Temnopleuridae in a later publication, no 
more need be given here than the brief diagnosis and a figure. 
BROCHOPLEURUS Fourtau, 1920 
Small forms of hemispherical shape. Pore-pairs in a nearly 
straight line. Primary tubercles non-crenulate, imperforate; a 
distinct radiating sculpture round the primary and partly also 
the secondary tubercles. Apical system (known in B. sadeki 
Fourtau) regularly dieyelie; gill-slits small, indistinct. Spines 
unknown. (Mortensen, 1943.) 
17 
B 
