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ACANTHODRILIDAE. 
*Benhamia  annae  n.  sp.  (Java). 
*  „        floresiana  n.  sp.  (Flores,  Sumatra). 
*  „        malayana  n.  sp.  (Sumatra,  Celebes,  Flores). 
Uroohaetidae. 
*Pontoscolex  corethrurus  Fr.  Müll.  (Java,  Sumatra,  Nias,  Celebes,  Sangir?). 
Geosooleoidae. 
* Glyphidrilus  weberi  n.  g.  and  sp.  (Java,  Sumatra,  Celebes,  Flores). 
*Annaclrilus  quadrangulus  n.  g.  and  sp.  (Sumatra). 
Cryptodrilidae. 
Cryptodrilus  insular  is  Rosa  (Aroe-isles). 
MONILIG  ASTRID  AE. 
Monilig aster  houtenii  Horst  (Sumatra). 
*  ;;         sp.  (Flores). 
*Desmogaster  sp.  (Sumatra). 
From  the  foregoing  list  we  learn,  that  Prof.  Weber  collected  21 
species  of  earthworms,  referable  to  9  genera.  Among  them  there 
are  2  new  genera  and  8  new  species  (3  are  dubious). 
As  could  be  expected,  the  greatest  number  of  species  (10)  belongs 
to  the  genus  Perichaeta  :  which  appears  to  be  a  predominant  type  in 
the  Malay  Archipelago.  In  that  respect  the  Malayan  fauna  also  goes 
with  the  fauna  of  India,  in  which  country  Bourne  asserts  to  have 
met  with  no  less  than  67  species  of  Perichaeta.  Though  some  few 
Perichaeta-species  are  found  in  the  Neotropical ,  Aethiopian  and  Austra- 
lian regions,  I  believe  that  the  true  Perichaeta's  are  specially  charac- 
teristic for  the  Oriental  region.  In  Japan,  which  belongs  to  the 
Palaearctic  region ,  some  species  of  Perichaeta  appear  to  be  indigenous  ; 
but  it  is  known  that  in  regard  to  its  fauna  of  freshwater  fishes  and 
land-  and  fresh- water  mollusca  this  country  also  agrees  with  the  Indian 
continent.  As  to  the  Perichaetidae ,  recorded  from  Australia,  I  think  a 
great  deal  of  them,  after  a  careful  examination,  will  prove  to  be  no 
true  Perichaeta's. 
The  agreement  between  the  Malayan  and  Indian  fauna  is  also 
confirmed  by  the  presence  of  the  genera  Monilig  aster ,  Desmogaster 
