35 
The  prostate-pores,  situated  upon  segment  XVII  and  XIX,  are 
connected  on  each  side  by  a  groove,  resembling  a  brace,  a  character, 
by  which  this  species  can  be  easily  distinguished  from  other  congeners 
(Pl.  II.  fig.  7).  The  oviducal  pores  lie  together  in  a  transverse,  oval, 
glandular  area  on  segment  XIV. 
The  setae  are  arranged  in  four  couples  and  have  the  ordinary 
shape;  the  distance  between  a  dorsal  and  ventral  couple  measures 
three  fourth  of  that  between  the  two  ventral  couples.  There  are  four 
fascicles  of  penial  setae,  each  of  them  containing  two  or  three 
setae.  The  largest  seta,  which  is  somewhat  longer  and  stouter  than 
the  others,  has  its  distal  extremity  undulated,  with  a  few  thorny 
processes  and  a  small  knob  at  the  tip.  The  smallest  seta  is  only 
faintly  undulated  (Pl.  II.  fig.  8). 
There  are  two  pairs  of  spermathecae;  each  sperm  atheca 
(Pl.  II.  fig.  9)  is  somewhat  oblong,  divided  by  a  constriction  in  two 
compartments,  the  superior  of  which  is  the  longest,  while  the  inferior 
is  globularly  dilated;  the  superior  compartment  bears  about  in  the 
middle  of  its  length  a  small  diverticulum,  filled  with  spermatozoa. 
There  is  a  large  gizzard ,  consisting  of  two  divisions ,  separated  by 
a  membranaceous  interval.  The  tubular  intestine  possesses  three  pairs 
of  calciferous  glands  ;  the  carbonate  of  lime  contained  in  them ,  is  not  a 
milky  fluid  as  that  in  the  glands  of  Lumbricus  a.  o.,  but  consists  of 
rhombohedral  cristals  of  different  seize. 
The  nephridia  consist  of  groups  of  delicate  tubules,  and  are 
arranged  nearly  in  four  longitudinal  series  on  each  side. 
3.  Benhamia  malayana  n.  sp. 
Flores:  Bari,  Maumeri,  Kotting,  Wukur. 
Sumatra:  Singkarah. 
Celebes:  Makassar. 
The  length  of  the  largest  specimen  is  20  to  30  mm,  the  number 
of  its  segments  amounts  to  about  95.  The  body  is  discoloured  ;  however 
its  posterior  region  is  usually  blackish,  owing  to  the  visibility  of  the 
intestinal  canal  through  the  transparent  body-wall.  The  body  tapers  in 
its  anterior  region;  the  anterior  five  segments  have  a  greater  lon- 
gitudinal diameter  than  the  succeeding  ones.  The  cephalic  lobe 
impinges  with  a  round  prolongation  into  the  buccal  segment  (Pl.  II. 
fig.  10). 
