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Pinkrode
The radula: Dr. Schilder (in litt.), did not find any distinct differences between the radula of C . esontropia and C .
cribraria.
Despite the lack of any appreciable differences in the live animal or radula of the two species, the shell possesses
sufficient morphological characteristics to be separated by collectors on sight. The profuse brown spotting of both margins
and thickening of both sides, are a constant feature in all adult shells of C. esontropia. The greater width in proportion to
the shell's length, deltoidal form, and smaller number of labial teeth, are features present in the greater part of shells,
though individuals may vary. C. cribraria lacks the thickening of the columellar margin and deltoidal form. the majority of
shells of any C. cribraria population are unspotted, although rare individuals may bear faint, sparse marginal spots on the
labial or both margins, the columellar spots, however, never extend onto the base. A specimen of C. cribraria from the
Philippine Islands, showed 10 weak, pale brown spots on the labial margin, and 13 on the columellar margin, in form the shell
was elongate-ovate, with the left side rounded, and the columellar teeth extended as strong ridges onto the fossula, thus
separating it from C. esontropia.
Another very important paper was published by Hidalgo around 1907. Although it was not illustrated, it was the first
significant collation of all the previous workers' efforts; he compiled a list of all known cowries and their authors, and
attempted to relate the species and their variants in an orderly way. Hidalgo failed, however, to recognize geographically
remote populations as distinct races; thus we have in Hidalgo another lumper--but nevertheless a very important man in the
Cypraea field.
Of course we all know about the Kiener, (1845), Reeve, (1845), and Sowerby, (1870) monographs; these are primary tools for a
worker in Cypraea, as these authors furnished excellent colored illustrations of the species known to them. I will not dwell
on these three, as they should be fairly familiar to most of you.
I would, however, like to show you the plates of one of the lesser-known cowrie monographs, the 1881 work by Weinkauff; I
have color slides of these plates with me tonight and am happy to share them with you after having to search the world over
-- unsuccessfully -- to try to obtain a copy of this rare book. These slides were made from a borrowed copy, one of the very
few known, remaining at this time in private hands.
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pinkrode
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