388 



MR. F. E. BEDDARD ON THE 



[Apr. 19, 



Benliam and Bergh — I am now convinced that the pair of glands in 

 segment 1 1 represent the posterior pair of testes in Lumbriciis, and 

 that the glands in segment 10, which I record for the first time in 

 the present communication, represent tlie anterior pair of testes in 

 Lnmbricus ; it follows, therefore, that the " testes " of my former 

 paper are the vesiculse seminales. The glands of segment 1*2 now 

 remain to be accounted for ; it seems to me 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 Lumhricus a pair of 



Fig. 2. 



/ c.p 



Acauthodrihis dissimilis. Dissection of genital region ; the oesophagus has been 

 partially removed; the vesiculie seaiiuales have been entirely removed 

 from segment 10 and from the left side of segments 11, 12. 



«p, sperm atheca ; o, vesicula! seminales; ^.testes; e"', additional pair of ovaries; 

 ov, ovaries; od, oviduct; /, vas deferens funnel ; vd, vas deferens; n, ne- 

 phridial aperture ; p, prostate ; sc, sac containing penial setje. 



rudimentary structures in segment 12, which lie regards as an ante- 

 rior pair of ovaries which do not arrive in that genus at sexual ma- 



