﻿art. 
  1 
  AMERICAN 
  PLOIARIINAE 
  McATEE 
  AND 
  MALLOCH 
  95 
  

  

  16. 
  Seventh 
  sternite 
  very 
  slightly 
  longer 
  than 
  sixth, 
  the 
  latter 
  with 
  the 
  hind 
  

  

  margin 
  slightly 
  concave 
  cuneata, 
  new 
  species 
  (p. 
  113). 
  

  

  Seventh 
  sternite 
  at 
  least 
  1.5 
  as 
  long 
  as 
  sixth 
  on 
  median 
  line, 
  the 
  latter 
  with 
  

   a 
  very 
  deep 
  concavity 
  on 
  hind 
  margin 
  aracataca, 
  new 
  species 
  (p. 
  112). 
  

  

  17. 
  Posterior 
  angles 
  of 
  tergites 
  more 
  or 
  less 
  ampliate 
  or 
  produced, 
  the 
  outline 
  

  

  of 
  dorsum 
  of 
  abdomen 
  as 
  seen 
  from 
  above 
  not 
  a 
  continuous 
  straight 
  or 
  

   curved 
  line 
  (fig. 
  210) 
  18 
  

  

  Posterior 
  angles 
  of 
  tergites 
  (except 
  sometimes 
  the 
  seventh) 
  not 
  produced, 
  

   the 
  outline 
  or 
  dorsum 
  of 
  abdomen 
  a 
  continuous 
  straight 
  (fig. 
  169) 
  or 
  

  

  curved 
  line 
  23 
  

  

  IS. 
  Fore 
  femur 
  notably 
  thicker 
  near 
  base 
  than 
  at 
  first 
  strong 
  spine 
  (fig. 
  

   213) 
  19 
  

  

  Fore 
  femur 
  enlarging 
  gradually 
  from 
  base 
  to 
  first 
  strong 
  spine 
  (fig. 
  

   185) 
  21 
  

  

  19. 
  A 
  strong 
  tubercle 
  on 
  hind 
  margin 
  of 
  sixth 
  tergite 
  (fig. 
  184) 
  20 
  

  

  No 
  obvious 
  tubercle 
  on 
  hind 
  margin 
  of 
  sixth 
  tergite. 
  

  

  glabrata, 
  new 
  species 
  (p. 
  128). 
  

  

  20. 
  Eighth 
  tergite 
  with 
  disk 
  prominently 
  elevated 
  each 
  side 
  of 
  a 
  broad 
  median 
  

  

  sulcus 
  ; 
  ninth 
  tergite 
  convex 
  medianly 
  the 
  margin 
  slightly 
  elevated 
  ; 
  cor- 
  

   rugations 
  of 
  these 
  tergites 
  indistinct 
  insidiatrix 
  Bergroth 
  (p. 
  126). 
  

  

  Eighth 
  and 
  ninth 
  tergites 
  with 
  disk 
  depressed 
  and 
  margin's 
  elevated, 
  each 
  

   longitudinally 
  carinate 
  and 
  transversely 
  corrugated. 
  

  

  amicula, 
  new 
  species 
  (p. 
  127). 
  

  

  21. 
  Angulations 
  of 
  tergites 
  more 
  pronounced 
  ; 
  apex 
  of 
  sixth 
  notably 
  wider 
  

  

  than 
  that 
  of 
  seventh 
  (fig. 
  210) 
  22 
  

  

  Angulation 
  of 
  tergites 
  less 
  pronounced 
  ; 
  apex 
  of 
  sixth 
  tergite 
  scarcely 
  wider 
  

   than 
  that 
  of 
  seventh 
  peruviana, 
  new 
  species 
  (p. 
  125). 
  

  

  22. 
  Elevated 
  margins 
  of 
  ninth 
  tergite 
  produced 
  apically 
  as 
  distinct 
  spines 
  (fig. 
  

  

  211) 
  annectens, 
  new 
  species 
  (p. 
  125). 
  

  

  Elevated 
  margins 
  of 
  ninth 
  tergite 
  not 
  forming 
  spines 
  (fig. 
  213). 
  

  

  truncata, 
  new 
  species 
  (p. 
  126). 
  

  

  23. 
  Basal 
  spine 
  of 
  fore 
  femur 
  at 
  less 
  than 
  its 
  own 
  length 
  from 
  base 
  of 
  femur 
  

  

  (i. 
  e. 
  juncture 
  of 
  the 
  trochanter) 
  ; 
  fore 
  tibia 
  and 
  tarsus 
  combined 
  three- 
  

   fourths 
  as 
  long 
  as 
  femur 
  (fig. 
  167) 
  ; 
  spine 
  between 
  bases 
  of 
  antennae 
  

  

  much 
  reduced, 
  a 
  mere 
  wart 
  galapagensis 
  Heidemann 
  (p. 
  100). 
  

  

  Basal 
  spine 
  of 
  fore 
  femur 
  at 
  distinctly 
  more 
  than 
  its 
  own 
  length 
  from 
  

   base 
  of 
  femur; 
  other 
  characters 
  not 
  as 
  above 
  24 
  

  

  24. 
  Seventh 
  sternite 
  distinctly 
  produced 
  on 
  middle 
  of 
  hind 
  margin 
  25 
  

  

  Seventh 
  sternite 
  not 
  produced 
  31 
  

  

  25. 
  Hind 
  margin 
  of 
  seventh 
  tergite 
  without 
  tubercle 
  26 
  

  

  Hind 
  margin 
  of 
  seventh 
  tergite 
  more 
  or 
  less 
  tuberculate 
  28 
  

  

  26. 
  Hind 
  margin 
  of 
  seventh 
  tergite 
  concave 
  medianly. 
  

  

  personata, 
  new 
  species 
  (p. 
  108). 
  

   Hind 
  margin 
  of 
  seventh 
  tergite 
  not 
  concave 
  medianly 
  27 
  

  

  27. 
  Hind 
  margin 
  of 
  seventh 
  tergite 
  straight 
  across_semipallida 
  Bergroth 
  (p. 
  100). 
  

   Hind 
  margin 
  of 
  seventh 
  tergite 
  angulate, 
  produced 
  medianly 
  but 
  not 
  tu- 
  

   berculate 
  alterata, 
  new 
  species 
  (p. 
  107). 
  

  

  28. 
  Median 
  tubercle 
  on 
  hind 
  margin 
  of 
  seventh 
  tergite 
  extending 
  farther 
  poste 
  

  

  riorly 
  than 
  lateral 
  angles 
  ; 
  ninth 
  tergite 
  with 
  3 
  finger-like 
  ridges 
  at 
  apex. 
  

  

  (fig. 
  172) 
  persimilis, 
  new 
  species 
  (p. 
  103). 
  

  

  Median 
  tubercle 
  on 
  hind 
  margin 
  of 
  seventh 
  tergite 
  not 
  extending 
  as 
  far 
  

   posteriorly 
  as 
  laterial 
  angles; 
  apex 
  of 
  ninth 
  tergite 
  lacking 
  finger-like 
  

   longitudinal 
  ridges 
  29 
  

  

  