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Show 388 MR. F. E. BEDDARD ON THE [Apr. 1 9> Benham and Bergh-I am now convinced that the pair of glands in segment 11 represent the posterior pair of testes in Lumbricus, and that the glands in segment 10, which I record for the first time in the present communication, represent the anterior pair of testes in Lumbricus; it follows, therefore, that the " testes " of m y former paper are the vesiculae seminales. The glands of segment 12 now remain to be accounted for; it seems to m e that the clue to the nature of these glands is to be found in Dr. Bergh's paper already referred to. Dr. Bergh describes and figures in Lumbricus a pair of Acanthodrilus dissimilis. Dissection of genital region; the oesophagusbas been partially removed; the vesiculce seminales have been entirely removed from segment 10 and from tbe left side of segments 11, 12. sp, spermatheca; a, vesicula. seminales; ^.testes; f, additional pair of ovaries; ov, ovaries; od, oviduct; /, vas deferens funnel; vd, vas deferens; n, nephridial aperture; p, prostate; sc, sac containing penial setae. rudimentary structures in segment 12, which he regards as an anterior pair of ovaries which do not arrive in that genus at sexual ma- 4 |
