﻿488 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  Rostral 
  striae, 
  when 
  present, 
  relatively 
  coarser 
  and 
  shallower, 
  and 
  confined 
  

   to 
  dorsal 
  surface 
  4 
  

  

  4. 
  Rostral 
  striae 
  evident, 
  straight; 
  second 
  abdominal 
  segment 
  plainly 
  shorter 
  

  

  than 
  the 
  third 
  and 
  fourth 
  combined 
  5 
  

  

  Rostral 
  striae 
  obsolete, 
  indicated 
  by 
  faint 
  depressions 
  only; 
  second 
  abdominal 
  

   segment 
  subequal 
  to 
  the 
  third 
  and 
  fourth 
  combined 
  6 
  

  

  5. 
  Mentum 
  concealing 
  palpi 
  entirely 
  Eupagoderes 
  Horn 
  

  

  Palpi 
  projecting 
  beyond 
  apex 
  of 
  mentum 
  (Mexico). 
  

  

  Caccophryastes 
  Sharp: 
  Genotype, 
  C. 
  lineatus 
  Sharp 
  (monobasic) 
  

  

  6. 
  Spinules 
  at 
  apex 
  of 
  fore 
  tibia 
  rather 
  coarse, 
  forming 
  a 
  row 
  which 
  is 
  usually 
  

  

  broadly 
  interrupted 
  near 
  upper 
  apical 
  angle 
  Amydrogmus 
  Pierce 
  

  

  7. 
  Prothorax 
  more 
  or 
  less 
  tuberculate 
  at 
  sides 
  and 
  little, 
  if 
  any, 
  narrower 
  than 
  

  

  elytra; 
  apex 
  of 
  hind 
  tibia 
  with 
  two 
  rows 
  (one 
  of 
  which 
  is 
  usually 
  much 
  

   confused) 
  of 
  spinules, 
  enclosing 
  an 
  elongate 
  space. 
  

  

  Ophryastes 
  Schoenherr 
  

  

  Prothorax 
  not 
  tuberculate 
  at 
  sides, 
  much 
  narrower 
  than 
  elytra; 
  apex 
  of 
  hind 
  

  

  tibia 
  with 
  only 
  one 
  distinct 
  row 
  of 
  spinules 
  Tosastes 
  Sharp 
  

  

  8. 
  Third 
  tarsal 
  joint 
  emarginate, 
  spinulose 
  beneath, 
  scarcely 
  (hind 
  tarsus) 
  or 
  only 
  

  

  moderately 
  (front 
  tarsus) 
  broader 
  than 
  second 
  Rhigopsis 
  LeConte 
  

  

  The 
  foregoing 
  key 
  appears 
  to 
  be 
  about 
  as 
  satisfactory 
  as 
  any 
  that 
  

   can 
  be 
  devised. 
  Perhaps 
  the 
  greatest 
  single 
  difficulty 
  is 
  with 
  Tosastes 
  

   coarctatus 
  Champion, 
  in 
  which 
  the 
  prothorax 
  is 
  distinctly 
  tuberculate 
  

   at 
  the 
  sides 
  and 
  as 
  wide 
  as 
  the 
  elytra, 
  the 
  species 
  in 
  these 
  respects 
  

   displaying 
  tendencies 
  similar 
  to 
  Ophryastes. 
  Sapotes, 
  Amydrogmus, 
  

   and 
  Rhigopsis 
  are 
  well 
  marked. 
  The 
  genus 
  Caccophryastes 
  should 
  be 
  

   recognizable, 
  unless, 
  as 
  Sharp 
  (1891, 
  p. 
  92) 
  suggests, 
  it 
  is 
  based 
  upon 
  

   a 
  malformed 
  specimen 
  of 
  a 
  species 
  properly 
  belonging 
  in 
  one 
  of 
  the 
  

   other 
  genera. 
  The 
  characters 
  given 
  for 
  the 
  separation 
  of 
  Eupagoderes, 
  

   Ophryastes, 
  and 
  Tosastes 
  should 
  be 
  used 
  with 
  caution, 
  as 
  these 
  genera 
  

   intergrade 
  with 
  one 
  another 
  to 
  a 
  considerable 
  extent. 
  

  

  Genus 
  SAPOTES 
  Casey 
  

  

  Sapotes 
  Casey, 
  1888, 
  p. 
  241. 
  (Genotype, 
  Sapotes 
  pundicollis 
  Casey, 
  monobasic.) 
  

  

  This 
  genus 
  is 
  characterized 
  by 
  Casey 
  as 
  follows: 
  

  

  Beak 
  about 
  as 
  long 
  as 
  the 
  head, 
  trisulcate; 
  scrobes 
  narrow, 
  deep, 
  beginning 
  near 
  

   the 
  apex, 
  passing 
  rapidly 
  beneath, 
  vanishing 
  slightly 
  below 
  and 
  before 
  the 
  eyes; 
  

   the 
  latter 
  broader 
  than 
  long, 
  subacute 
  beneath, 
  partially 
  concealed 
  in 
  repose 
  by 
  the 
  

   ocular 
  lobes. 
  Antennae 
  short; 
  scape 
  a 
  little 
  shorter 
  than 
  the 
  funicle, 
  barely 
  

   attaining 
  the 
  eyes, 
  gradually, 
  feebly 
  clavate; 
  funicle 
  seven-jointed, 
  first 
  joint 
  as 
  

   long 
  as 
  the 
  next 
  two 
  together, 
  second 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  third, 
  joints 
  three 
  

   to 
  six 
  equal, 
  subquadrate, 
  seventh 
  a 
  little 
  wider, 
  transverse, 
  rather 
  close 
  to 
  the 
  

   club; 
  the 
  latter 
  ovoidal, 
  pointed, 
  rather 
  small, 
  finely 
  pubescent. 
  Prothorax 
  

   without 
  lateral 
  tuberosities; 
  ocular 
  lobes 
  well 
  developed, 
  devoid 
  of 
  fimbriae. 
  

   ScuteUum 
  small, 
  triangular, 
  distinct. 
  Tenth 
  elytral 
  stria 
  distinct 
  in 
  basal 
  third. 
  

   First 
  abdominal 
  segment 
  much 
  longer 
  than 
  the 
  metasternum, 
  nearly 
  as 
  long 
  as 
  the 
  

   next 
  three 
  together, 
  separated 
  from 
  the 
  second 
  by 
  a 
  very 
  feebly 
  arcuate, 
  deeply 
  

   impressed 
  suture; 
  second 
  nearly 
  as 
  long 
  as 
  the 
  third 
  and 
  fourth 
  together. 
  Tarsi 
  

   rather 
  robust; 
  first 
  three 
  joints 
  short, 
  setose 
  with 
  the 
  tips 
  spinose 
  beneath; 
  third 
  

   slightly 
  wider 
  than 
  the 
  second, 
  bilobed; 
  fourth 
  nearly 
  as 
  long 
  as 
  the 
  first 
  three 
  

  

  