62 Proceedings of the Royal Irish Academy. 



Fig. 



65. Left gonapophysis of eighth abdominal segment, showing (A) attachment 



and segmentation near base, (B) near middle, and (C) at tip, 

 adductor [ad) and extensor {cxt) muscles, x 50. 



66. Two scales from abdominal sub-coxae, x 210. 



67. Lepisma intermedia. Male. Dorsal view. Scaling not shown, x 17. 



68. Eight sub-coxa \s.c.) and stylet {st) of ninth abdominal segment, x 116. 



69. Tip of thigh (/e), shin {ti) and foot {ta) of hind-leg. x 116. 

 70 Sensory bristle from shin of hind-leg. x 580. 



Plate VI. 

 Isolepisma hisetosa. 

 Scaling not shown. 



71. Male, dorsal view, x cS. 



72. Face (/) and labrum (Ibr). x 62. 



73. A bifid bristle from the face, x 210. 

 7-i. Two scales from the body, x 210. 



75. Right mandible, seen from behind : c, condyle ; a, apex ; re, retractor ; 



ad. p, posterior adductor, and ad, median adductor muscles, x 62. 



76. Apex (ft) and molar area (m) of left mandible, front view, x 62. 



77. Tongue [hi/) and left maxillula {mxl) ; front view, //c, peduncle of tongue. 



x62. 



78. Right maxilla seen from the front: c. cardo ; .s<, stipes; r/, galea; /, lacinia; 



p, palp ; pr, protractor ; ad, adductor muscles ; I. m. adductor of 

 lacinia ; </. m. of galea, x 62. 

 T'.l. Labium with left palp. {/>); s. m. sub-mentum ; //;, mentum ; ^, galea; 

 /, lacinia. x 62. 



80. Terminal abdominal segments of male, ventral view ; viii, Sth sternum ; 



s.c. 9th sub-coxa; d, 9th stylet; /le, penis, x 25. 



81. Left sub-coxa of ninth abdominal segment, dorsal view (internal), showing 



base of stylet with muscles, x 62. 



82. Terminal abdominal segments of female, ventral view : vii, viii, ix, stylets 



of 7tli, Sth, and 9lli segments ; yo. viii and ju.ix, anterior and hinder 

 gonapophyses ; s. c. 9th sub-coxa, x 25. 



Plate VIL 



Acrotelsa eloiufata, female. 



Scaling not shown. 



83. Dorsal view, x 8. 



84. Left mandible, front view ; ad, adductor muscle, x 58. 



