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MR.  J.  O.  WESTWOOD  ON  NYCTERIBIA. 
The  references  of  this  species  to  Linnaeus  and  others,  given  by  Dr.  Leach,  must  be 
considered  as  dubious.  Frisch  has  represented  an  insect  which  from  the  shortness  of 
the  legs  may  possibly  be  intended  for  this  species ' .  That  it  is  not  the  one  figured  by 
Latreille  in  the  '  Histoire  Naturelle '  and  the  '  Genera  Crustaceorum  '  (with  which  it  is 
doubtfully  considered  as  synonymous  by  Dr.  Leach)  is  evident  from  the  length  and 
slenderness  of  the  legs  in  the  figures  contained  in  those  works. 
11.  Nycteribia  biarticulata. 
Nyct.  pallide  ochracea,  abdomine  obscuriore ;  pedibus  elongatis,  dilaiatis,  longe  setosis,  seta 
unicd  ad  basin  tibiarum  longissimd,  coxis  anticis  brevibus ;  abdomine  ?  quasi  2-arti- 
culato,  segmento  primo  supra  longius  producto,  stylis  duobus  caudalibus  elongatis  cylin- 
dricis  porrectis  ad  apicem  longe  setosis ;  c?  6  ?-articulato,  subtus  ad  apicem  stylis  duobus 
incurvis  ad  ventrem  adpressis ;  thorace  subtus  concolore.  (c?.  ?) 
Long.  corp.  lin.  14-  (2  secundum  Leach). 
Phthiridium  biarticulatum,  Herm.,  Mem.  Apt.,  pi.  6.f.  I.  ?  . 
Phthir.  Hermanni,  Leach,  Zool.  Misc.,  iii.pl.  144.  S>  ^. 
Celeripes  Vespertilionis,  Mont.,  in  Linn.  Trans.,  ix.  p.  166. 
Nycteribia  Vespertilionis,  Mont.,  in  Linn.  Trans.,  xi.  p.W.  t.3.  f.  b.  ?  . 
Hab.  in  Rhinolopho  Ferro-equino  Anglise,  Germanise,  Italise. 
Mus.  Brit.,  et  Stephens. 
Obs.  Species  distinctissima,  sectionem  peculiarem  in  genere  constituens. 
I  have  restored  Hermann's  name  for  this  species,  to  obviate  the  confusion  which  has 
arisen  from  his  chief  description  having  been  derived  from  a  different  species,  as  well 
as  from  a  sense  of  justice  to  that  author  2. 
'  Ins.  Deutschl.,  vol.  ii.  part  5.  pi.  5. 
-  Since  the  above  Paper  was  read.  Dr.  Horsfield  has  been  so  kind  as  to  afford  me  an  opportunity  of  examining 
a  large  Nycteribia,  collected  by  himself  in  Java,  and  contained  in  the  collection  of  the  East  India  Company, 
which  differs  from  Nyct.  Sykesii  only  in  having  the  terminal  abdominal  setce  extending  to  some  distance  along 
the  middle  of  the  disc  of  the  abdomen. 
I  may  add  that  Dr.  Perty  has  published  the  description  and  figure  of  a  minute  insect,  which  appears  to  be 
nearly  allied  to  Nycteribia,  in  the  '  Delectus  Animalium  Articulatorum  Brasiliae',  under  the  name  of  Lipoptera 
Phyllostomatis.  The  description  is  not,  however,  sufficiently  precise  to  enable  me  to  judge  with  certainty  of 
its  real  structure. 
