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Spondylus barbatus
All specimens from Moreton Bay, both the holotype and 4 paratypes (sent me by W, O. Cernohorsky for examination) from 7-8
fathoms, and 4 specimens from 30 fathoms near Moreton Island (given me by O. H. Rippingale) are broader than the renovata
from Queensland, as they are about as broad as typical striatula from Bombay and the Persian Gulf. They are also mostly
smaller, though four shells from Shoal Point, Mackay (leg. G. Houston) are only about as large as tinctura, and much smaller
than the shells from Piccaninny Point, Yeppoon (leg. C. Coucom) and Pearl Reef (in coll. W. O. Cernohorsky)! These facts may
be illustrated by the diagram in which the length (in classes of 0.5 mm) has been plotted against the breadth (expressed in
per cent of length). Therefore tinctura seems to represent a well defined local race of Primovula striatula renovata: so far
as we know at present times, it seems to be restricted to the Moreton Bay area.
The July issue of The Veliger, quarterly journal of the California Malacozoological Society, contains a paper by Crawford N.
Cate on Western Australian cowries, in which he lists 60 species, with synonymy, bibliographic references, distribution,
measurements of largest and smallest shells, and other notes. He describes two subspecies as new: Cribraria (Ovatipsa)
chinensis whitworthi and Mauritia (Arabica) arabica brunnescens. A plate shows top and bottom of three species. In addition
to a map showing localities, these are listed alphabetically with geographical coordinates.
For the reef crawler who likes tide pools and the splash zone of reefs, the best area is from the Barber's Point Light House
to the Campbell Estate Barge Harbor. In general the shore in this area is composed of coral slabs and law (2 to 4 ft.)
cliff-like drop-offs on which the usually rather moderate breakers wash over at high tide and which are left dry except for
sometimes rather heavy splashing during low tide. Small to moderate tide pools are the rule but occasionally rather large
pools may be found. At times this area has no breakers and the shore line then offers moderately good shelling in shallow
water suitable for a diver equipped with mask, flippers, and snorkel. A look box can also be used in the more shallow areas
in very quiet waters. In these tidal areas by far the most common shell is Nerita picea which can be taken by the hundreds.
Also I have collected Nerita neglecta and more rarely Nerita plicata. Also very common are all Philippines species of the
Littorinidae. Occasionally I find shells of the Patellidae family clinging to coral or rocks. Also in the tidal pools,
clinging to the underside of small coral chunks, were Purpura intermedia and harpa. And finally, for the splash zone, my
first Hydatina amplustre was collected in the rocky area midway between Barber's Point lighthouse and the barge harbor.
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spondylus barbatus
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