NO. 2134. NORTH AMERICAN COLLEMBOLOVS INSECTS— FOLSOAI. 521 



Plate 11. 



Fig. 47. Achorutes sodalis, left dens and mucro, X 350. 



48. Achorutes socialis, dorsal aspect of right mucro, X 3G5. 



49. Achorutes socialis, left anal spine, X HO. 



50. Achorutes socialis, dorsal setae of first abdominal segment, X HO. 



51. Achorutes harveyi, eyes of left side, X 290. 



52. Achorutes harveyi, right postantennal organ, X 840. 



53. Achorutes harveyi, left hind foot, X 365. 



54. Achorutes harveyi, lateral aspect of left dens and mucro, X 365. 



55. Achorutes harveyi, dorso-lateral aspect of left dons and mucro, X 365. 



56. Achorutes harveyi, dorsal aspect of right mucro, X 580. 



57. Achorutes harveyi, left anal spine, X 365. 



58. Achorutes harveyi, dorsal setae of first abdominal segment, X 82. 



Platk 12. 



Fx«. 59. Achorutes humi, eyes of right side, X 840. 



GO. Achorutes humi, right postantennal organ, X 1230. 



61. Achorutes humi, sense organ of third antennal segment of right side, X 840. 



62. Achorutes humi, left hind foot, X 840. 



63. Achorutes humi, left mucro, X 1230. 



64. Achorutes humi, right mucro, X 1230. 



65. Achorutes humi, anal spine, X 1230. 



06. Achorutes humi, dorsal setae of first abdominal segment, X 350. 



67. Achorutes tullbergi, eyes of right side, X 415. 



68. Achorutes tullbergi, right postantennal organ, X 1230. 



69. Achorutes tullbergi, sense organ of third antennal segment of right side, X 



1?30. 



70. Achorutes tullbergi, right hind foot, X 840. 



71. Achorutes tullbergi, right mucro, X 840. 



72. Achorutes tullbergi, left anal spine, X 350. 



73. Achorutes tullbergi, dorsal setae of first abdominal segment, X 350. 



Plate 13. 



Fir,. 74. ylc7ion/irs mac(/?7/i!'W?/i, left postantennal organ, X 1230. 



75. Achorutes m.acgillivrayi, right postantennal organ, X 840. 



76. Acliorutes macgillivrayi, sense organ of third antennal segment of left side, 



X 840. 



77. Achorutes viacgilUvrayi, left liind foot, X 490. 



78. Achorutes macgillivrayi, left mucro, X 840. 



79. Achorutes macgillivrayi, anal spine, X 490. 



80. Achorutes macgillivrayi, anal spines, X 350. 



81. Achorutes, macgillivrayi, dorsal setae of first abdominal segment, X HO. 



82. Achorutes viaticus, eyes of left side, X 260. 



83. Achorutes viaticus, right postantennal organ, X 840. 



84. Achorutes viaticums, left hind foot, X 276. 



85. Achorutes viaticus, right mucro, X 350. 

 80. Achorutes viaticus, left mucro, X 450. 



87. Achorutes viaticus, anal spine, X 350. 



88. Achorul£S viaticus, dorsal setae of first abdominal segment, X HO. 



