332 
tered  here  and  there.  The  1st  tergite  or  nuchal  plate  with  a  fine  in- 
ferior carina  as  in  Z.  nigriceps;  the  2nd  tergite  formed  as  in  that 
species;  but  the  posterior  borders  of  the  others  more  markedly  emar- 
ginate  laterally,  owing  to  the  production  posteriorly  of  the  inferior 
angle;  anal  segment  formed  as  in  Z.  nigriceps. 
Copulatory  feet  almost  exactly  as  in  Z.  nigriceps. 
Length  about  16,5  mm.,  width  8  mm. 
Order  LIMACOMORPHA  nov. 
This  new  order  is  proposed  for  the  remarkable  genus  Glomeridesmus 
which  is  in  many  respects  intermediate  in  character  between  the 
Oniscomorpha  and  some  families  of  Helminthomorpha.  It  resembles 
the  Oniscomorpha  in  the  structure  of  its  segments  and  legs,  in  the 
absence  of  repugnatorial  pores,  in  the  absence  of  copulatory  organs 
upon  the  7th  segment  and  their  presence  at  the  posterior  end  of  the 
body,  as  also  in  the  fact  that  the  last  tergite  is  incomplete  below 
and  merely  forms  a  hood  to  cover  the  last  pair  of  legs.  But  it  differs 
markedly  from  the  Oniscomorpha  and  approaches  many  of  the  Hel- 
minthomorpha in  having  the  body  tapering  anteriorly  and  posteriorly, 
the  anal  tergite  not  enlarged  and  the  anterior  segments  similar  in 
form,  the  second  not  being  so  large  as  the  3rd  and  not  much  larger 
than  the  1st. 
Latzel  *)  has  already  proposed  the  family  Glomeridesmidae  for  the 
genus;  but  since  Dr.  Max  Weber  obtained  only  one  specimen  of  it  — 
which  being  unique  must  be  treated  with  respect  and  not  dissected 
for  the  discovery  of  characters  —  I  will  not  here  enter  upon  a  detailed 
discussion  of  its  generic  features  ;  especially  as  these  will  be  fully  dealt 
with  in  my  forthcoming  paper  upon  the  Diplopoda  of  the  West-Indies. 
For  the  present  then  the  following  brief  characterisation  will  suffice. 
Family  GLOMERIDESMIDAE. 
Glomeridesmus ,  Gervais. 
Ins.  apt.  IV,  p.  86. 
Foramina  repugnatoria  invisible. 
Body  composed  of  20  segments. 
1)  Die  Myriopoden  Ost.  Ung.  Monarchie  II,  p.  124. 
