321 
xanthopus;  P.  bidens  ;  Strongylosoma  subalbum  ;  S.  carneum;  S. 
subflavum;  S.  flavicoxis;  Spirostreptus  rubro-cinctus. 
Muka-Muka.  Platyrhacus  mirandus ;  P.  laticollis ;  P.  verrucosus;  P. 
submissus  ;  Spirostreptus  erythropleurus  ;  Sp.  pachyurus. 
Java. 
Buitenzorg:  Zephronia  nigriceps;  Siphonorhinus  pallipes;  S.angustus; 
Platyrhacus  humberti;  P.  subalbus  ;  Strongylosoma  pygmœum;  S. 
weberi;  S.  atro-roseum;  Doratonotus  armatus;  Cryptodesmus  we- 
beri;  Cambala  dentata;  Spirostreptus  javanicus;  Sp.  xanthonotus. 
Tjibodas:  Zephronia  rufipes;  Siphonophora  flaviceps;  Siphonotus  for- 
mosus;  S.  elegans;  Platyrhacus  flavisternus ;  Doratonotus  armatus; 
Cryptodesmus  concolor. 
Timor. 
Kupang:  Trigoniulus  goësi. 
Celebes. 
Makassar:  Strongylosoma  coar datum;  S.  weberi;  Trigoniidus  goësi; 
Spirobolellus  chrysogrammus. 
Luwu:  Spirostreptus  proboscideus ;  Rhinocricus  weberi;  Spirobolellus 
chrysoproctus. 
Bira:  Rhinocricus  eumelanus. 
Island  of  Saleyer.  Strongylosoma  coarctatum  ;  Rhinocricus  brachyproctus  ; 
Trigoniulus  goësi;  Trigoniulus  tachypus. 
Flores. 
Bari:  Strongylosoma  vinosum;  S.  coarctatum;  Rhinocricus  semicinctus ; 
Trigoniulus  goësi. 
Maumerie:  Siphonophora  vittata;  Lophodesmus  pusillus;  Rhinocricus 
xanthogonus  ;  Trigoniulus  megaloproctus. 
Reo:  Strongylosoma  coarctatum;  Trigoniulus  goësi;  Trigoniulus  reonus. 
III.  Systematic  description  of  the  species. 
Order  oniscomorpha  ,  Pocock. 
Ann.  Mag.  Nat.  Hist.  (5),  XX.  pp.  283-295.  1887. 
Short  robust  Diplopoda,  capable  of  rolling  themselves  into  a  ball. 
The  dorsal  surface  of  the  body  covered  by  12  or  13  tergal  plates 
