﻿358 
  Mr. 
  A. 
  CI. 
  Butler 
  on 
  a 
  

  

  spots 
  on 
  the 
  primaries, 
  just 
  as 
  in 
  the 
  females, 
  only 
  rather 
  

   smaller 
  ; 
  as 
  a 
  rule 
  these 
  are 
  not 
  present, 
  in 
  the 
  males 
  of 
  

   P. 
  philenor. 
  

  

  17. 
  Papilio 
  orsua, 
  sp. 
  n. 
  

  

  d 
  . 
  P. 
  philenori 
  quoque 
  similis, 
  sed 
  multo 
  minor 
  et 
  alis 
  nitide 
  csera- 
  

   lescentioribus 
  ; 
  posticis 
  ecaudatis, 
  inaculis 
  submarginalibus 
  magis 
  

   rotundatis 
  et 
  pure 
  albis 
  : 
  subtus 
  posticis 
  a 
  margine 
  usque 
  ad 
  cel- 
  

   lulam 
  nitide 
  cyanescentibus, 
  maculis 
  suis 
  saturate 
  rubris. 
  

  

  5 
  mari 
  similis, 
  sed 
  maculis 
  omnibus 
  majoribus 
  et 
  magis 
  distinct 
  is. 
  

  

  Hab. 
  Mexico, 
  Tres 
  Marias 
  Islands 
  (Forrer). 
  

  

  This 
  is 
  also 
  a 
  form 
  of 
  P. 
  philenor 
  , 
  probably 
  peculiar 
  to 
  the 
  

   Tres 
  Marias 
  Islands; 
  as 
  in 
  P. 
  corbis 
  the 
  tails 
  of 
  the 
  secon- 
  

   daries 
  are 
  not 
  developed, 
  but 
  it 
  differs 
  from 
  that 
  species 
  in 
  

   the 
  bluer 
  tint 
  of 
  its 
  wings, 
  the 
  spots 
  of 
  the 
  hind 
  wings 
  being 
  

   of 
  a 
  clearer 
  white 
  and 
  further 
  from 
  the 
  outer 
  margin, 
  and 
  

   beneath 
  the 
  metallic 
  blue 
  margin 
  of 
  the 
  secondaries 
  is 
  much 
  

   wider, 
  extending 
  up 
  to 
  the 
  cell. 
  On 
  the 
  opposite 
  mainland 
  

   at 
  Acapulco 
  and 
  Mazatlan 
  the 
  true 
  P. 
  philenor 
  is 
  found. 
  

  

  XL. 
  — 
  Description 
  of 
  a 
  new 
  Species 
  of 
  the 
  singular 
  Lepido- 
  

   pterous 
  Genus 
  Mastigophorus. 
  By 
  A. 
  Gr. 
  Butler, 
  F.L.S., 
  

   F.Z.S., 
  &c. 
  

  

  The 
  genus 
  Mastigophorus 
  was 
  founded 
  by 
  Poey 
  (Cent. 
  Lep. 
  

   Cuba, 
  pi. 
  viii.) 
  for 
  the 
  reception 
  of 
  a 
  small 
  Deltoid 
  moth 
  — 
  

   M. 
  parra. 
  

  

  This 
  genus, 
  incorrectly 
  quoted 
  by 
  Guenee 
  and 
  Walker 
  as 
  

   Mastygophora 
  {sic), 
  is 
  characterized 
  by 
  extraordinarily 
  elon- 
  

   gated, 
  reflexed, 
  and 
  fringed 
  palpi, 
  slender 
  antennae 
  with 
  well- 
  

   defined 
  conical 
  joints, 
  the 
  anterior 
  angles 
  of 
  which 
  are 
  fur- 
  

   nished 
  on 
  each 
  side 
  with 
  a 
  delicate 
  short 
  hair, 
  and 
  the 
  tibia? 
  

   of 
  the 
  anterior 
  legs 
  terminating 
  in 
  a 
  dense 
  pencil 
  of 
  short 
  

   hairs; 
  the 
  last-mentioned 
  character 
  and 
  the 
  entire 
  instead 
  of 
  

   angulated 
  primaries 
  seem 
  alone 
  to 
  distinguish 
  it 
  from 
  Palthis, 
  

   Hubn.,= 
  Clanyma, 
  Gu£n., 
  = 
  Mardara 
  } 
  Walk, 
  

  

  The 
  species 
  now 
  to 
  be 
  described 
  is 
  allied 
  to 
  M. 
  lycagusalis 
  

   of 
  W 
  alter 
  -=Bertula 
  ? 
  monstrosalis 
  of 
  Felder 
  and 
  Rogenhofer, 
  

   from 
  Venezuela, 
  but 
  differs 
  in 
  its 
  much 
  deeper 
  colouring, 
  

   narrower 
  and 
  simply 
  white-edged 
  reniform 
  spot, 
  simply 
  angu- 
  

  

  