﻿122 
  

  

  DAVID 
  MILLER. 
  

  

  side 
  of 
  the 
  outer 
  edge 
  is 
  a 
  row 
  of 
  minute 
  and 
  strongly 
  recurved 
  spines, 
  while 
  opposite 
  

   and 
  parallel 
  to 
  these 
  is 
  a 
  row 
  of 
  delicate 
  hairs, 
  each 
  inserted 
  in 
  a 
  small 
  tubercle. 
  

   Extending 
  from 
  the 
  spine 
  on 
  the 
  upper 
  angle 
  on 
  to 
  the 
  side 
  of 
  the 
  mandible 
  is 
  a 
  broad 
  

   ridge 
  bearing 
  numerous 
  long 
  hairs. 
  The 
  lower 
  side 
  consists 
  of 
  two 
  ridges, 
  upon 
  

   each 
  of 
  which 
  is 
  a 
  condyle 
  for 
  the 
  attachment 
  of 
  the 
  mandible 
  to 
  the 
  cranium. 
  

  

  Fig. 
  16. 
  Maxilla 
  of 
  larva, 
  dorsal 
  aspect 
  ; 
  

   a. 
  forked 
  hair. 
  

  

  Maxillae 
  (fig. 
  16) 
  brownish, 
  each, 
  as 
  a 
  whole, 
  roughly 
  ovate 
  but 
  separated 
  into 
  

   two 
  parts, 
  apparently 
  representing 
  the 
  galea 
  and 
  lacinia, 
  by 
  a 
  median 
  fissure 
  extending 
  

   from 
  the 
  apex 
  to 
  the 
  base, 
  while 
  on 
  the 
  outside 
  of 
  the 
  galea 
  is 
  a 
  well-developed 
  two- 
  

   jointed 
  palpus. 
  The 
  lacinia 
  is 
  shorter 
  than 
  the 
  galea, 
  and 
  along 
  its 
  outer 
  margin 
  

   and 
  upon 
  the 
  anterior 
  part 
  of 
  the 
  dorsal 
  surface 
  are 
  numerous 
  flat 
  forked 
  bristles 
  

   (fig. 
  16, 
  16 
  a), 
  which 
  become 
  short 
  posteriorly 
  and 
  do 
  not 
  extend 
  to 
  the 
  articulation 
  ; 
  

   ventrally 
  from 
  the 
  apex 
  and 
  almost 
  to 
  the 
  articulation 
  runs 
  a 
  ridge 
  from 
  which 
  arise 
  

   numerous 
  long 
  golden 
  hairs 
  directed 
  outwards. 
  The 
  galea 
  is 
  shaped 
  like 
  the 
  lacinia, 
  

   but 
  is 
  truncated 
  apically 
  to 
  carry 
  a 
  dense 
  plume 
  of 
  golden 
  brown 
  hairs, 
  which 
  are 
  

   as 
  long 
  as 
  the 
  whole 
  maxilla 
  ; 
  on 
  each 
  side 
  just 
  below 
  the 
  apex 
  is 
  a 
  stout 
  spine, 
  the 
  

   dorsal 
  one 
  arising 
  near 
  the 
  outer 
  margin 
  and 
  the 
  ventral 
  near 
  the 
  inner 
  (fig. 
  16). 
  

   Ventrally 
  runs 
  an 
  indistinct 
  ridge, 
  near 
  the 
  inner 
  margin, 
  extending 
  from 
  the 
  apex 
  

   to 
  the 
  articulation 
  and 
  between 
  this 
  ridge 
  and 
  the 
  inner 
  margin 
  arise 
  innumerable 
  

   golden 
  hairs 
  ; 
  towards 
  the 
  apex 
  the 
  surface 
  is 
  clothed 
  with 
  long 
  delicate 
  hairs. 
  The 
  

   palpus 
  is 
  two-jointed, 
  the 
  terminal 
  joint 
  being 
  elongate 
  and 
  evenly 
  rounded, 
  though 
  

   somewhat 
  narrower 
  apically 
  and 
  terminated 
  by 
  three 
  short 
  blunt 
  teeth 
  ; 
  the 
  basal 
  

   joint 
  is 
  clavate 
  and 
  elongate, 
  tapering 
  to 
  the 
  articulation, 
  while 
  dorsally 
  near 
  its 
  

   anterior 
  margin 
  arises 
  a 
  long 
  sinuated 
  spine 
  (fig. 
  16). 
  Ventrally 
  towards 
  the 
  base 
  

   of 
  the 
  apical 
  joint 
  are 
  numerous 
  delicate 
  hairs. 
  At 
  the 
  articulation 
  the 
  lacinia 
  is 
  

   produced 
  to 
  a 
  point 
  and 
  the 
  galea 
  evenly 
  rounded. 
  The 
  galea, 
  lacinia 
  and 
  palpus 
  

   of 
  each 
  maxilla 
  are 
  united 
  by 
  a 
  basal 
  membrane, 
  a 
  continuation 
  of 
  which 
  also 
  attaches 
  

  

  