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Philippines pendant |
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philippines pendant,
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Philippines pendantPhilippines pendant It will also be a good idea to permit a certain "ventilation" for the place where the shells will be kept, and possibly give periodic "airings" to drawers and closets. Precisely due to this necessity for airings, entomological drawers adapted for holding shells i.e. divided into movable sections, are not very practical. One of the primary functions of these chests of drawers is to close the specimens away from air and dust, but while this is indispensable for insects, whose preservation is also guaranteed by small quantities of para-dichlorobenzene added to the bottom of the chest of drawers, this is not the case with shells, which do suffer from dust, but also from stagnant air and the impossibility to let off any excess humidity. Philippines pendantPhilippines pendant From radula studies it would appear that bregeriana is a subspecies of walkeri after all, and not a separate species as I always believed. However, it is open to doubt if radula comparisons are the only criterion in deciding a shell's specific identity. Besides, bregeriana and walkeri are closely allied, and no large differences were to be expected. It is Dr. Schilder's opinion, that there are no constant differences in radula between the species allied to arabica, and only few species of Erosaria have peculiar characteristics. On the other hand, among 20 C. stolida from Shimoni, six showed distinct central denticles in the middle of the median tooth, yet fourteen specimens showed no trace and the difference was not due to sexual differences. Such a difference according to Dr. Schilder could be treated as generic almost and the difference in radula of C. bicolor sometimes exceed usual subgeneric differences. It appears that the radula of a species is as variable as the shell itself, and it seems to me, that the live animal's colour of foot, mantle, papillae and tentacles are more constant than both radula and shell. Out of over 2000 Cypraea specimens I collected in Fiji for radula studies, only 6 specimens showed a gross colour difference from the usual colouring of the species. Philippines pendant philippines pendant,jewelry accessory,fashion earring imitation jewelry wholesale,philippines shells philippines shell,philippines troca,philippines suppliers,philippines products shell tiles,cebu jewelry,philippines products jewelry online shopping,philippines pendant
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Updated June 3, 2004 |
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