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Published online by Cambridge University Press: 15 September 2014
The Insecta are dioecious Invertebrates, and the rudiments of the sexual organs exist in the larvæ, but are chiefly developed during the pupal stage. These organs present such wide and manifold variations, that even those of individuals belonging to the same genus are so widely different in structure, &c., that it is only by a systematic study of each species that the student of nature is capable of arriving at correct conclusions concerning the reproductive organs of any particular species.