49 
second  paper  on  M.  barwelli  shows  that  his  first  statements  about 
this  species  *)  are  not  quite  correct,  and  therefore  Rosa's  suggestion  that 
M.  beddardii  should  be  distinguished  from  M.  barwelli,  by  having  only 
three  gizzards  and  the  funnels  of  its  spermducts  lying  free  into  the 
vesiculae  séminales,  cannot  be  maintained. 
Our  specimen  however  differs  from  both  species  in  the  structure 
of  its  female  genital  organs.  Though  Rosa  observed  the  ovaries  in 
M.  beddardii,  neither  he  nor  Beddaed  mentions  the  presence  of  the 
large  egg-sacs,  which  in  our  specimen  appear  to  be  no  less  developed 
than  those  in  M.  Houtenii  and  if.  minutus. 
Desmogaster  Rosa. 
7.  Desmogaster  sp. 
Sumatra:  mount  Singalang. 
Among  the  earthworms ,  collected  in  Sumatra,  I  met  with  a  spe- 
cimen, in  which  there  was  neither  any  trace  of  a  clitellum,  nor  of  an 
external  orifice  visible;  I  therefore  presumed  it  to  be  an  immature 
iu  dividual  of  any  known  species.  On  opening  it  from  the  dorsal  side 
however  I  recognized,  that  it  probably  belongs  to  the  genus  Desmo- 
gaster, only  recently  described  by  Rosa  on  specimens,  collected  in 
the  village  of  Metelèo  in  Burmah.  Desmogaster  doriae,  though  agreeing 
in  many  respects  with  Monilig  aster ,  is  specially  distinguished  by  ha- 
ving two  pairs  of  male  genital  glands,  and  two  pairs  of  vasa 
deferentia,  furnished  with  large  prostata-glands  and  opening  by  four 
distinct  pores  in  the  intersegmental  groove  XI/XII  and  XII/XIII.  I 
regret  that  I  could  not  recognize  thoroughly  the  internal  organisation 
of  this  worm ,  as  the  specimen  was  rather  small  and  much  contracted, 
and  I  did  not  like  to  spoil  it  too  much. 
The  worm  measures  about  140  mm.;  it  has  nearly  300  segments, 
but  those  behind  the  126th.  are  regenerated.  The  body  is  cylindrical 
over  its  total  length;  its  colour  of  the  dorsal  side  is  violet,  at  the 
ventral  side  whitish.  No  clitellum  is  visible.  The  cephalic  lobe 
is  not  embedded  in  the  buccal  segment.  The  two  anterior  segments 
have  their  longitudinal  diameter  smaller  than  that  of  the  succeeding 
ones;  the  10th  segment  is  the  largest  one.  The  setae  are  minute, 
arranged  in  four  pairs;  the  distance  between  the  dorsal  and  ventral 
couple  measures  the  half  of  that  between  both  ventral  pairs. 
2)  Annals  and  Magazine  of  Natural  history,  1886,  p.  94. 
4 
