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The torsion of the visceral hump is not carried out very fully, the consequence being that the anus has a posterior position a little to the right of the median line above the metapodium, whilst the branchial chamber formed by the overhanging mantle-skirt faces the right side of the body instead of lying well to the front as in Streptoneura and as in Pulmonate Euthyneura.

This is the condition in the Bullomorpha, the Aplysiomorpha, and in one Pulmonate, Pythia.

These spermatophores are somewhat similar to those formed in certain pulmonate Gastropods.

How interesting it will be to see hereafter plants treated in strict relation to your views; and then all insects, pulmonate molluscs, and fresh-water fishes, in greater detail than I suppose you have given to these lower animals.

One cannot write easily of "pulmonate gasteropods."