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The Descent of Man

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informs me that the adult male <strong>of</strong> Spectrum<br />

femoratum (one <strong>of</strong> the Phasmidae) "is <strong>of</strong> a shining<br />

brownish-yellow colour; the adult female<br />

being <strong>of</strong> a dull, opaque, cinereous brown; the<br />

young <strong>of</strong> both sexes being green." Lastly, I may<br />

mention that the male <strong>of</strong> one curious kind <strong>of</strong><br />

cricket (48. Platyblemnus: Westwood, 'Modern<br />

Classification,' vol. i. p. 447.) is furnished with<br />

"a long membranous appendage, which falls<br />

over the face like a veil;" but what its use may<br />

be, is not known.<br />

ORDER, NEUROPTERA.<br />

Little need here be said, except as to colour. In<br />

the Ephemeridae the sexes <strong>of</strong>ten differ slightly<br />

in their obscure tints (49. B.D. Walsh, the 'Pseudo-neuroptera<br />

<strong>of</strong> Illinois,' in 'Proceedings <strong>of</strong> the<br />

Entomological Society <strong>of</strong> Philadelphia,' 1862, p.<br />

361.); but it is not probable that the males are<br />

thus rendered attractive to the females. <strong>The</strong><br />

Libellulidae, or dragon-flies, are ornamented

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