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Plants, cultivated, more fertile than wild; Nageli, on natural selection in; male flowers of, mature before the female; phenomena of fertilisation in. Platalea, change of plumage in. Platyblemus. Platycercus, young of. Platyphyllum concavum. Platyrrhine monkeys. Platysma myoides. Plecostomus, head-tentacles of the males of a species of. Plecostomus barbatus, peculiar beard of the male.
The prevalence of salt-water remains is most conspicuous in some of the central parts of the formation. Helix labyrinthica, Say. Neritina concava, Sowerby. Lymnea caudata, Edw. Cerithium concavum, Sowerby. Searles Wood in Hordwell Cliff. It is also met with in Headon Hill, in the same beds.
Walsh, B.D., on the proportion of the sexes in Papilio Turnus; on the Cynipidae and Cecidomyidae; on the jaws of Ammophila; on Corydalis cornutus; on the prehensile organs of male insects; on the antennae of Penthe; on the caudal appendages of dragonflies; on Platyphyllum concavum; on the sexes of the Ephemeridae; on the difference of colour in the sexes of Spectrum femoratum; on sexes of dragon-flies; on the difference of the sexes in the Ichneumonidae; on the sexes of Orsodacna atra; on the variation of the horns of the male Phanaeas carnifex; on the coloration of the species of Anthocharis.
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