Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 582
nt view. The distinctive character of the genusSurirella, in addition to the presence of the supposed canaliculi,is derived from the longitudinal line down the centre of each valve(fig. 404, A) and the prolongation of the margins into ala?. Numerousspecies are known, which are mostly of a somewhat…
Microscopy
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