[A9]

L' Institut 1839. p. 95. Nordmann on Tendra zostericola allied to Flustra — sexes in separate cells —

"l' on voit dans leur voisinage une multitude d' animalcules ressembant a des zoospermes", speaking of females; but he says below afterwards that the zoosperms pass from males to females by an "ouverture située a la base de chaque loge".— I cannot reconcile this —

[Natural selection, p. 46: "Distrusting my own knowledge I applied to Professor Huxley, whose knowledge of the invertebrate animals is well known to be profound, whether he knew of any animals whose structure was such that an occasional cross was physically impossible. He informs me that some of the jelly-fish (Beroidae) seem to offer the greatest difficulty, but even in them it is not positively known whether or not the eggs are discharged fertilised;/24/& that as these animals derive their food from indrawn currents of water, which bathe the ovaria, it is certainly quite possible that the spermatozoa of other individuals might come into action.1
1 [Pencilled memorandum:] Nordmann & Owen on sexes separate in Flustra. [Nordmann] L'Institut 1839 p. 95—on sexes in coralline allied to Flustra & on zoospermatic animalcules!"]