﻿[105] 
  On 
  a 
  new 
  Species 
  of 
  Hypocala. 
  217 
  

  

  an 
  epoch 
  in 
  the 
  collection 
  of 
  Noctuidse, 
  and 
  an 
  important 
  

   chapter 
  in 
  their 
  history. 
  

  

  Hypocala 
  Hilli 
  n. 
  sp. 
  

  

  Antennae 
  scaled 
  ; 
  under 
  a 
  microscope 
  clothed 
  with 
  numer- 
  

   ous 
  short 
  cilia 
  on 
  each 
  joint, 
  and 
  with 
  fascicles 
  of 
  longer 
  

   ones, 
  of 
  the 
  length 
  on 
  the 
  basilar 
  joints 
  of 
  about 
  one- 
  half 
  of 
  

   their 
  diameter, 
  In 
  proceeding 
  from 
  the 
  base 
  toward 
  the 
  tip, 
  

   these 
  fascicles 
  are 
  less 
  marked, 
  until 
  at 
  about 
  midway 
  of 
  the 
  

   antennae 
  they 
  have 
  become 
  changed 
  into 
  spinules, 
  of 
  which 
  

   there 
  may 
  be 
  three 
  or 
  more 
  on 
  each 
  joint 
  ; 
  toward 
  the 
  tip 
  

   these 
  spinules 
  extend 
  beyond 
  the 
  numerous 
  short 
  cilia 
  to 
  

   about 
  once 
  and 
  a 
  half 
  the 
  diameter 
  of 
  the 
  joints, 
  and 
  are 
  

   visible, 
  as 
  are 
  also 
  the 
  fascicles, 
  under 
  an 
  ordinary 
  magnifier. 
  

  

  Palpi 
  triangular, 
  porrected, 
  pointed, 
  slightly 
  beaked, 
  pale 
  

   brown 
  sprinkled 
  with 
  black 
  scales, 
  as 
  are 
  also 
  the 
  head, 
  pro- 
  

   thoracic 
  tufts 
  and 
  thorax: 
  these 
  latter 
  tinged 
  with 
  ochraceous. 
  

  

  Abdomen 
  yellow, 
  the 
  basal 
  segments 
  bearing 
  some 
  long 
  

   dusky 
  hairs. 
  Segments 
  8-11, 
  with 
  a 
  fuscous 
  or 
  black 
  spot 
  

   (black 
  on 
  the 
  posterior 
  ones) 
  on 
  their 
  anterior 
  two 
  -thirds, 
  ap- 
  

   proaching 
  in 
  form 
  two 
  mesially 
  connected 
  small 
  segments 
  of 
  

   a 
  circle. 
  On 
  the 
  last 
  segment 
  a 
  large 
  black 
  spot, 
  triangular 
  

   in 
  front, 
  extending 
  on 
  the 
  sides 
  and 
  on 
  the 
  long 
  anal 
  tuft, 
  

   of 
  which 
  the 
  terminal 
  portion 
  is 
  yellow, 
  tipped 
  with 
  dusky. 
  

   Sides 
  of 
  the 
  abdomen 
  with 
  a 
  row 
  of 
  five 
  small 
  black 
  spots, 
  

   and 
  with 
  its 
  under 
  surface 
  pale 
  yellow, 
  sprinkled 
  with 
  black 
  

   scales. 
  

  

  Wings 
  : 
  primaries 
  sprinkled 
  with 
  black 
  scales 
  on 
  a 
  pale 
  

   brown 
  ground, 
  which 
  shows 
  a 
  distinct 
  violet 
  shade 
  in 
  a 
  

   certain 
  light, 
  especially 
  on 
  their 
  outer 
  half, 
  with 
  a 
  slight 
  pale 
  

   green 
  reflection 
  near 
  the 
  base 
  on 
  the 
  inner 
  portion 
  of 
  the 
  wing. 
  

   Costa 
  delicately 
  striated 
  transversely 
  with 
  darker 
  brown. 
  

   Median 
  lines 
  and 
  discal 
  spots 
  absent 
  ; 
  the 
  reniform 
  traceable 
  

   in 
  a 
  scarcely 
  perceptible 
  encircling 
  line 
  when 
  sought 
  for 
  with 
  

   a 
  magnifier. 
  Subterminal 
  line 
  ferruginous, 
  bordered 
  on 
  each 
  

   side 
  with 
  black, 
  extending 
  from 
  opposite 
  the 
  cell 
  just 
  above 
  

   vein 
  4, 
  outwardly 
  in 
  two 
  or 
  three 
  teeth 
  to 
  near 
  the 
  margin, 
  

   then 
  bending 
  backward, 
  and 
  with 
  some 
  gentle 
  curves, 
  reach- 
  

   ing 
  the 
  internal 
  margin 
  near 
  the 
  angle. 
  The 
  terminal 
  line 
  

   black, 
  waved, 
  and 
  a 
  yellowish 
  one 
  at 
  the 
  base 
  of 
  the 
  fringe. 
  

   The 
  fringe 
  brown, 
  tipped 
  with 
  a 
  darker 
  shade. 
  Secondaries 
  

   of 
  a 
  luteous 
  yellow, 
  with 
  their 
  greater 
  portion 
  black, 
  as 
  fol- 
  

  

  