39 134 



Proceedings of the Royal Irish Academy. 



Index to G-enera and Subgenera — continued. 



Holostaspis, 66. 

 Hoploderma, 10S. 

 Hyadesia, 108. 

 Hydrogamusus, 65. 

 Hypoaspis, 70. 

 Hypocthonius, 107. 

 Ixodes, 95. 

 Labidostonmia, 94. 

 Laelaps, 69. 

 Lentungula, 10S. 

 Liacarus, 102. 

 Lohniannia, 107. 

 Malaconothrus, 106. 

 Microthrombidium, 118. 

 Notaspis, 102. 

 Nothrus, 105. 

 Ologamasus, 54. 

 Ololaelaps, 70. 

 Oolaelaps, 73. 

 Oribata, 96. 

 Pachylaelaps, 63. 

 Paraseius, 77. 

 Pelops, 95. 

 Penthaleus, 111. 

 Pergamasus, 51. 

 Phaulocylliba, 86. 

 Phthiracarus, 108. 



Podotbi'ombium, 117- 

 Poeeilocheirus, 55. 

 Pseudoparasitus, 70. 

 Rhagidia, 110. 

 Ehonibognatbus, 121. 

 Rbyncholophus, 114 

 Scutoveitex, 100. 

 Scaptognathus, 126. 

 Seius, 74. 

 Seiulus, 74. 

 Sericothronibium, 120. 

 Simognathus, 127. 

 Smaris, 117. 

 Suctobelba, 104. 

 Tegeocranus, 101. 

 Tetranyehus, 114. 

 Thinozercon, 82. 

 Trachyuropoda, 93. 

 Trouessartella, 127. 

 Tyroglyphus, 109. 

 Urobovella, 91. 

 CJiodiscella, 92. 

 Urodinychus, 9 1 . 

 Uropoda, 91. 

 Urotracliytes, 93. 

 Zercon, 79. 



DESCRIPTION OF PLATES. 



Fig. 

 1 

 2 



Plate IV. 



Gamasus (Pergamasus) runcatellus Beii. Male. Armature of second leg. 



Gamasus {Pergamasus) runciger Berl. Male, a, Armature of second leg, 

 type form, b and c, Ventral view of femoral process. Var. armatus 

 nov. Male, rf, Ventral view of femoral process, e, Armature of second 

 leg. /, Trochanter of fourth leg. g, Chelicerae. 



Gamasus (Pergamasus) diversus sp. nov. Male, a, Armature of second 

 leg. b, Trochanter of fourth leg. c, Outer maxillary lobe, d, Cheli- 

 cerae. e, Epistome. 



Gamasus (Pergamasus) processiferus sp. nov. Female, a, Armature of 

 trochanter, b, Area genitalis, c, Chelicerae. 



