EXPLANATION 
OP 
PLATES  II -IV. 
be.  buccal  cavity;  hi.  bloodvessels;  c.  supra-oesophageal  ganglion;  le.  cephalic  lobe; 
d.  diverticulum;  dv.  dorsal  vessel;  e.  eggs;  g.  gizzard;  gl.  glandular  layer  of  clitellum; 
Im.  longitudinal  muscles;  mg.  mucous  gland;  ml.  muscular  layer;  n.  nephridium;  nc.  ventral 
nerve-cord  ;  np.  nephridiai  porus  ;  o.  ovary  ;  od.  oviduct  ;  oe.  oesophagus  ;  ph.  pharynx  ; 
pr.  prostata  ;  ro.  receptaculum  ovorum  ;  s.  seminal  vesicle  ;  sd.  spermduct  ;  si.  sacculated 
intestine;  sp.  spermatheca;  sv.  supraneural-vessel ;  t.  testis;  tm.  transversal-muscles; 
is.  typhlosolis;  vv.  ventral- vessel  ;  x.  problematical  organ. 
PLATE  II. 
Figs.  1  —  5.  Benhamia  Annae  n.  sp. 
Fig.  1.  Transverse  section  through  the 
body-wall  of  the  eigtheenth  segment. 
X  28  diam. 
Fig.  2.  Ventral  view  of  the  clitellar  seg- 
ments, to  show  the  area  of  the  prostate- 
pores.  X  10  diam. 
Fig.  3.  a.  Penial  seta.  X  175  diam.  b.  Ex- 
tremity of  the  same  seta,  highly  magnified. 
Fig.  4.  Spermatheca.  Magnified. 
Fig  5.  Longitudinal  section  through  the 
spermatheca.  Magnified. 
Figs.  6  —  9.  Benhamia  floresiana  n.  sp. 
Fig.  6.  Dorsal  view  of  the  anterior  seg- 
ments. Magnified. 
Fig.  7.  Ventral  view  of  the  clitellar  seg- 
ments, to  show  the  area  of  the  prostate- 
pores.  X  10  diam. 
Fig.  8.  Penial  setae.  X  175  diam. 
Fig.  9.  Spermatheca.  Magnified. 
Figs.  10  —  13.  Benhamia  malayana  n.  sp. 
Fig.  10.  Dorsal  view  of  the  anterior  seg- 
ments. Magnified. 
Fig.  11.  Ventral  view  of  the  clitellar 
segments ,  to  show  tho  area  of  the  prostate- 
pores.  X  10  diam. 
Fig.  12.  Penial  setae.  Highly  magnified. 
Fig.  13.  Spermatheca.  Magnified. 
Fig.  14.  Spermatheca  of  Benhamia  Bolavi 
Mich.  X  90  diam. 
Figs.  15-19.  Glyphidrilus  Weberi  n.  sp. 
Fig.  15.  Latero- ventral  view  of  the  anterior 
end  of  an  individual,  showing  the  shape 
of  the  clitellar  ridges  and  the  distribution 
of  the  setae.  X  3  diam. 
Fig.  16.  General  view  of  the  internal  or- 
gans of  the  worm,  opened  from  the 
dorsal  side.  X  6  diam. 
Fig.  17  A  portion  of  a  transverse  section 
through  the  modified  epidermis  of  the 
clitellum,  to  show  the  structure  ot  a 
puberty-groove.  X  90  diam. 
Fig.  18.  A  transverse  section  through  the 
body- wall  of  segment  XXVII,  to  show 
the  structure  of  the  clitellar  ridges  and 
the  distal  extremities  of  the  spermducts. 
X  18  diam. 
Fig.  19.  Dorsal  view  of  the  anal  extre- 
mity. X  10  diam. 
PLATE  III. 
Fig.  20.  Glynhidrilus  Weberi  n.  sp. 
A  portion  of  a  longitudinal  section  through 
Sogment  XIII,  showing  the  position  of 
