ANATOMICAL REDESCRIPTION OF CYRENOIDA FLORIDANA (BIVALVIA, CYRENOIDIDAE) FROM THE WESTERN ATLANTIC AND ITS POSITION IN THE CYRENOIDEA

Anatomical redescription of Cyrenoida floridana (Bivalvia, Cyrenoididae) from the Western Atlantic and its position in the Cyrenoidea

Members of the small bivalve family Cyrenoididae inhabit brackish waters of the eastern and western Atlantic Ocean.Cyrenoida floridana (Dall, 1896) from the western Atlantic is poorly known aside from shell descriptions.A detailed shell and anatomical study of C.floridana is here presented and compared with available data for Cyrenidae and Glaucono

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THE APPARATUS FOR ALIGNMENT OF THE PHOTOMETRIC LAMP FILAMENT

During photometric measurements involving the use of photometric lamps it is necessary that the filament of lamp takes a strictly predetermined position with respect to the photodetector and the optical axis of the photometric setup.The errors in positioning of alignment filament with kuiper belt whiskey respect to the optical axis of the measuring

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