1886. ] LITTLE-KNOWN EARTHWORMS. 303 
deferentia, although passing over the bursa copulatrix, did not open 
into it but into the prostate gland, as I have indicated in the drawing 
(fig. 1). The anterior section of the vasa deferentia (v.d) as far as the 
bursa copulatrix was very conspicuous, owing to the white colour of the 
tubes (white from the contained spermatozoa): the distal region of 
the vasa deferentia was far less conspicuous, and I mistook them at 
first for a mere ligament uniting the prostate with the surface of the 
Generative organs of Hudrilus, 
a, glandular appendix; 4, bursa copulatrix; v.d, vasa deferentia ; 
pr, prostate. 
bursa copulatrix ; a more careful examination has shown that the 
supposed ligament is really a continuation of the vasa deferentia. 
These tubes, although lying upon the bursa, are in no way adherent to 
it, and can be readily lifted up with a dissecting-needle ; they are 
then seen to be continuous with the prostate (pr.). 
