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Benhamia  Michaelsen. 
1.  Benhamia  Annae  l)  n.  sp. 
Java:  Buitenzorg,  several  specimens. 
The  lenght  *  of  the  largest  specimen  is  30  mm.;  the  number  of  its 
segments  amounts  to  about  85.  The  body  is  cylindrical,  having  nearly 
the  same  diameter  over  its  total  length.  The  skin  is  colourless  and 
in  the  posterior  region  of  the  body  so  thin,  that  the  segmental  organs 
are  visible  through  it. 
The  prostomium  impinges  only  for  a  short  distance  into  the 
buccal  segment  ;  the  buccal  region  of  the  intestinal  canal  is  everted 
in  all  specimens.  The  cl  it  ell  urn  is  very  obvious  and  complete, 
extending  from  segment  XIII  (XIV)  to  XXI.  The  prostate-pores 
upon  segment  XVII  and  XIX,  are  situated  on  a  transverse,  oval  area, 
that  is  somewhat  elevated;  a  longitudinal  groove,  as  in  other  species, 
connects  the  two  orifices  of  each  side  (Pl.  II.  fig.  2).  In  transverse  sec- 
tions this  groove  can  be  seen  situated  at  the  internal  side  of  a  ridge- 
shaped  thickening  of  the  hypodermis  (fig.  1)  ;  the  area  between  these 
ridges  wants  the  strong  glandular  development  of  the  dorsal  side  of 
the  body,  nevertheless  it  has  a  somewhat  convex  shape.  Therefore  it 
appears  to  me  not  permitted  to  say,  that  the  prostates  open  here  in 
a  pit  or  fossa,  as  in  other  Benhamia-^eciQS. 
The  first  dorsal  pore  is  situated  in  the  intersegmental  groove  IV/V. 
The  setae  are  arranged  in  four  couples;  they  are  situated  at  the 
ventral  side  of  the  body ,  at  about  an  equal  distance  from  each  other. 
The  two  setae  of  each  couple  are  placed  quite  close  to  each  other 
and  have  the  ordinary  shape.  However  in  the  vinicity  of  each  pro- 
state there  is  a  fascicle  of  two  penial  setae,  which  are  very  long 
and  slender;  they  have  the  tip  slightly  curved  und  their  distal  half 
has  an  undulated  appearance  (PL  II.  fig.  3).  By  high  power  they  appear 
to  be  furnished  with  blund,  bud-shaped  processes,  giving  them  the 
appearance  of  a  thorn-stick.  The  two  penial  setae  have  not  the  same 
length;  the  smallest  of  them,  measuring  only  a  fourth  of  the  length  of 
the  largest  one,  may  be  considered  as  a  reserve-bristle. 
The  longitudinal  muscular  layer  of  the  body- wall  shows  the  bipinnate 
arrangement  of  the  fibres,  frequently  met  with  in  earthworms;  this 
1)  I  permit  myself  to  dedicate  this  species  to  Mrs.  A.  Weber— van  Bosse,  who  valiantly 
accompanied  her  husband  on  his  wearisome  journey  through  the  Malay  Archipelago. 
