325 
distal  or  fourth  segment  is  spiniform,  i.e.  stout  at  the.  base  then 
abruptly  narrowed,  the  distal  three  fourths  tapering  gradually  to 
a  point. 
Length  10.5. 
This  species  resembles  G.  albicornis,  G.  carnifex,  G.  pallida,  and 
G.  concolor1)  in  having  a  very  large  number  of  striae  on  the  1st 
dorsal  plate.  From  all  of  them  it  differs  in  being  almost  wholly 
fuscous,  and,  in  addition,  from  the  first  three  it  may  be  recognised 
by  the  impressed  and  strongly  emarginate  anal  tergite  of  the  male , 
by  the  absence  of  a  process  on  the  first  segment  of  the  copulatory 
foot,  by  the  presence  of  but  one  process  on  the  second  segment  and 
by  the  much  less  curved  and  more  slender  fourth  segment. 
Family  zephroniid ae  ,  nov. 
Sphaerotheria ,  Brandt,  Bull.  Mose.  1833,  p.  198. 
Antennœ  widely  separated ,  situated  completely  at  the  sides  of  the 
head  and  lodged  in  deep  sockets.  Eyes  composed  of  a  circular  mass 
of  ocelli.  There  is  no  sensory  organ  on  the  face  between  the  antennae 
and  eyes. 
Gnathochilarium  with  the  mentum  and  lingua  not  separately  recog- 
nisable, but  represented  by  a  single  nearly  parallel-sided  plate;  the 
cardo  on  each  side  is  very  large,  larger  than  the  stipes  which  is 
furnished  with  only  a  single  mala. 
Thirteen  distinct  tergal  plates;  and  on  each  side  eleven  distinct 
pleurae  bearing  the  ambulatory  limbs;  the  pleuras  of  the  1st  and  the 
segments  obsolete.  Twenty-one  pairs  of  legs  in  the  Ç,  twenty- 
three  in  the  ;  terga  1-4  with  a  single  pair  each,  6-12  with  two 
pairs  each;  anal  tergite  with  a  distinct  pleura  on  each  side  and 
furnished  with  1  pair  2)  of  legs  in  the  Ç  and  with  three  pairs  in  tf. 
The  anal  tergite  apparently  representing  three  segments;  its  anterior 
portion  has  a  distinct  pleura  on  each  side  and  is  often  defined  by  a 
notch  on  the  lateral  margin.  The  anal  valves  apparently  formed  as  in 
the  Glomeridœ,  but  in  the  9  there  is  a  distinct  median  anal  sternite 
1)  Pocock,  Ann.  Nat.  Hist.  1889,  p.  474,  from  Borneo. 
2)  It  is  very  difficult  to  determine  the  exact  nature  of  the  correspondence  between 
the  legs  and  the  pleurae.  T  have  not  succeeded  in  satisfying  myself  that  my  determination 
is  correct. 
