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Significant range extension for
species always require a confirmation that it has been identified
correctly. Unfortunately, our knowledge of ranges for cowries is often
based on the statements made by local collectors who have heared rumors
or know somebody whose nephew has seen this or that. On several
occasions South African collectors told me of "typical" O. coloba
from the coast of Natal, found along with regular chinensis. I had
never seen actual specimens that would justify to give too much credit
to these statements. Now I got this shell in Fig. 1 top, measuring 32,5
mm from Umkomaas, Natal, South Africa, dredged at 90 m. It very closely
resembles O. coloba
from India and the Laccadives in general coloration and in shape. However,
on closer inspection we can see several differences: the fossula is
more developed and extends onto the columella, forming a shallow
peristomal ridge. The lateral spots are finer and extend far onto the
base than in O. coloba, in
which the spots only rarely extend almost onto the mid-base. Comparing
the fascinating "pseudo-coloba"
with other specimens from the same depth and place in Natal, its glory
shrinks to just a calloused specimen of that local chinensis ssp. or variation. No
name has yet been given to the South African deep-water chinensis, which is actually sad
because the colouration alone make it easily recognizable, and a proper
revision of the chinensis-like
shells along with a description of this one would help also to clarify
the mess connected with the name somaliana,
which most collectors believe
to have, but in most cases, they don't.In G3, I have tentatively placed somaliana as western subspecies of coloba, and the South African look-alikes have been given the varietal name kwazulu.
![]() Fig. 1: Top: Ovatipsa chinensis ssp. aberrant shell from Natal bottom: Ovatipsa coloba from the Laccadives ![]() Fig. 2: Ovatipsa chinensis variolaria f. kwazulu from Natal, largest shell 43,4 mm ![]() Fig. 3: Ovatipsa coloba somaliana from
Somalia (Paratypes) images from the Guide.
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