1885.] 



NEW-ZEALAND EARTHWORMS. 



825 



these bodies that are homologous with what T have described as the 

 testes of AcantJiodrilus. The structure of the male generative 

 organs in Lumbricus appear therefore to be exceptional, since it is 

 almost the general rule among Earthworms for the testes to be large 



Fig. 3. 



c.p- 



Acantkodrilus dissimilis. — Dissection of genital region. 



c.p, Copulatory poucli ; a, testes ; /, funnels of vasa cleferentia ; v.d, vas de- 

 ferens; ov, ovary; o.d, oviduct; », opening of nephridia ; t, f, peculiar 

 glands homologous (?) with ovaries ; p, prostate ; sc, sac containing penial 

 setse. A portion of the oesophagus, and the testes of left side have been 

 removed. 



glands, not in the least comparable in size to the ovaries. The fact 

 that the true testes of Lumbricus are approximately of the same size 

 as the ovaries, might lead any one to doubt on a priori grounds of 

 the correctness of my description ; but the racemose character of 

 the testes in Acanthodrilus, which I have found more marked in 



