46 
drilus,  and  its  vasa  deferentia  want  at  their  distal  extremity  the 
glandular  bodies,  present  in  this  genus.  By  the  absence  of  prostate- 
glands  Annadrilus  agrees  with  Geoscolex  and  its  allied  genera.  Rosa 
recently  described  an  earthworm  trom  Birmah,  Bilimba  papillata,  which 
has  on  each  side  of  segment  XVIII— XXIV  a  lateral  ridge,  like 
that  in  Annadrilus;  this  species  however  is  characterized  by  a 
great  number  of  copulatory  papillae  and  the  situation  of  its  male  pores 
is  unfortunately  unknown. 
MONILIGr  ASTRID  AB. 
This  interesting  family,  distinguished  from  all  other  earthworms  by 
the  absence  of  a  clitellum  (except  M.  sapphirinaoïdes  Bourne  ')),  and  by 
the  situation  and  the  structure  of  their  genital  organs ,  is  only  repre- 
sented by  two  small  worms ,  one  belonging  to  the  genus  Moniligaster , 
the  other  probably  referable  to  the  genus  Desmogaster.  All  the  species 
of  this  family,  hitherto  described,  being  found  in  the  Indo-malayan 
region  (India,  Ceylon,  Luzon,  Sumatra  and  Timor)  it  appears  to  be 
specially  characteristic  for  this  part  of  the  world. 
Moniligaster  Perrier. 
6.  Moniligaster  sp. 
Flores:  Kotting,  one  specimen. 
A  small  worm,  not  measuring  much  over  18  mm.  in  length;  the 
number  of  its  segments  is  about  100.  Beginning  with  the  sixtieth 
the  segments  are  probably  regenerated,  their  longitudinal  diameter 
being  smaller  than  that  of  the  preceding  ones,  and  their  series  of 
dorsal  setae  not  forming  a  continuous  line  with  the  dorsal  series  of 
the  anterior  sixty  segments.  The  body  is  cylindrical,  tapering  towards 
the  anal  extremity. 
The  cephalic  lobe  does  not  extend  into  the  buccal  segment ,  which 
is  very  narrow.  The  distance  between  a  dorsal  and  ventral  couple  of 
setae  measures  two  thirds  of  that  between  the  ventral  pairs.  The 
male  pores  are  visible  in  the  intersegmental  groove  X/XI 2),  mid- 
1)  Proc.  Zool.  Society,  188C ,  p.  670. 
2)  In  my  description  of  the  gigantic  M.  Houtenii  (Notes  Leyden  Museum  IX,  p.  97) 
I  stated  the  male  pores  to  be  situated  between  segment  XI  and  XII;  as  it  is  now  sett- 
led that  in  all  other  Moniligaster-syeeies  those  pores  lie  between  segment  X  and  XI  I 
reexamined  they  specimens,  for  it  might  be  possible  that  I  made  the  error  of  one  segment 
in  rny  enumeration ,  as  was  done  by  Beddaru  in  his  first  description  of  M.  bartoelli. 
