The Isopods of Abyssal Depths in the Atlantic Ocean

80 ROBERT J. MENZIES
56. Heteromesus longiremis Hansen 122
57. Heteromesus bifurcatus, n.sp. 122
58. Heteromesus granulatus Richardson 122
59. Heteromesus spinescens Richardson 123
60. Heteromesus similis Richardson 123
8. Genus: Stylomesus Wolff 123
A Key to the Species of Stylomesus 123
61. Stylomesus inermis (Vanhoffen) 123
62. Stylomesus granulosus, n.sp. 124
63. Stylomesus spinulosus, n.sp. 125
64. Stylomesus elegans, n.sp. 126
65. Stylomesus regularis, n.sp. 126
66. Stylomesus simplex, n.sp. 126
67. Stylomesus productus, n.sp. 127
68. Stylomesus simulans, n.sp. 127
Family: Macrostylidae 127
9. Genus: Macrostylis G. O. Sars 128
A Key to the Species of Macrostylis 128
69. Macrostylis truncatex, n.sp. 128
70. Macrostylis abyssicola Hansen 129
71. Macrostylis setifer, n.sp. 130
72. Macrostylis hirsuticaudis, n.sp. 131
73. Macrostylis caribbicus, n.sp. 131
74. Macrostylis vemae, n.sp. 131
75. Macrostylis bifurcatus, n.sp. 131
76. A4acrostylis minutus, n.sp. 131
77. Macrostylis bipunctatus, n.sp. 132
Family: Nannoniscidae 133
A Key to the Genera of Nannonisridae 1 33
10. Genus: Nannoniscnides Hansen 133
78. Nannoniscoides hinutus. n.sp. 133
1 1. Genus: Nannoniscus G. O. Sars 133
A Key to the Species of Nannoniscus 1 34
79. Nannoniscus inermis Hansen 13 >
80. Nannoniscus nrmatus Hansen 135
81. Nannoniscus analis Hansen 135
82. Nannoniscus oblongus G. O. Sars 136
83. Nannoniscus camayae. n.sp. 137
84. Nannoniscus laevis, n.sp. 138
85. Nannoniscus primiticus, n.sp. 138
86. Nannoniscus spinicornis Hansen 138
Family: Kurycopidae 138
A Key to the Genera of the Kurycopidae 138
12. Genus: Eurycope G. O. Sars 139
A Kev to the Abyssal Species of Eurycope 13''
87. Eurycope antarctica Vanhoffen 139
88. Eurycope furcata G. O. Sars 140
89. Eurycope producta G. O. Sars 141
90. Eurycope vacarius Vanhoffen 141
91. Eurycope complanata Bonnier 141
92. Eurycope murrayi Walker 141
93. Eurycope parva Bonnier 142
94. Eurycope nodifrons Hansen 143
95. Eurycope hanseni Ohlin 143
96. Eurycope incisa Gurjanova 143
97. Eurycope acutitelson, n.sp. 143
98. Eurycope nodosa, n.sp. 145
99. Eurycope ovaloides, n.sp. 145
Genus: Storthyngura Vanhoffen 145
A Key to the Species of Storthyngura 145
100. Storthyngura digitata, n.sp. 146
101. Storthyngura truncata (Richardson) 146
102. Storthyngura magnispinis (Richardson) 147
103. Storthyngura triplispinosa, n.sp. 149
104. Storthyngura symmetrica, n.sp. 149
105. Storthyngura vemae, n.sp. 149
106. Storthyngura birsteini, n.sp. 149
107. Storthyngura snanoi, n.sp. 149
13. Genus: Syneurycope Hansen 150
A Key to the Species of Syneurycope 151
108. Syneurycope heezeni, n.sp. 151
109. Syneurycope parallela Hansen 151
110. Syneurycope hanseni Menzies 151
111. Syneurycope multispina, n.sp. 152
14. Genus: Acanthocope Beddard 152
A Key to the Species of Acanthocope 153
112. Acanthocope'argentinae, n.sp. 154
113. Acanthocope unicornis, n.sp. 155
114. Acanthocope annulalus, n.sp. 155
Family: Ilyarachnidae 155
15. Genus: Ilyarachna G. O. Sars 156
115. Ilyarachna abyssorum Richardson 156
116. Ilyarachna bicornis Hansen 156
117. Ilyarachna spinosissima Hansen 157
118. Ilyarachna longicornis G. O. Sars 157
119. Ilyarachna derjugini Gurjanova 158
120. Ilyarachna nodifronoides, n.sp. 158
121. Ilyarachna qfricana, n.sp. 159
122. Ilyarachna spinoajricana, n.sp. 160
123. Ilyarachna simplex, n.sp. 160
124. Ilyarachna multispinosa, n.sp. 160
125. Ilyarachna argentinae, n.sp. 160
126. Ilyarachna gurjanovae, n.sp. 160
127. Ilyaiachna identijrons, n.sp. 161
128. Ilyaiachna tiiangulaia, n.sp. 161
129. Ilyarachna scotia, n.sp. 162
family: Desmosomidae 162
16. Genus: Desmosoma G. O. Sars 162
A Key to the Species of Desmosoma 163
130. Desmosoma giaciltpcs Hansen 163
131. Desmosoma insigne Hansen 163
132. Desmosoma simile Hansen 164
133. Desmosoma intermedium Hult 165
134. Desmosoma coarcticum (G. O. Sars) 165
135. Desmosoma longispinum Hansen 165
136. Desmosoma striata, n.sp. 165
137. Desmosoma magnispinum, n.sp. 165
138. Desmosoma birsteini, n.sp. 166
Family: Dendrotionidae 167
A Key to the Genera of the Dendrotionidae 167
17. Genus: Dendromunna, n.gen. 167
139. Dendromunna spinipes, n.sp. 167
Family: Ianirellidae 167
18. Genus: lanirella Bonnier 168
A Key to the Species of lanirella 168
140. lanirella lobata Richardson 168
141. lanirella bifida, n.sp. 168
142. lanirella laevis Hansen 168
143. lanirella vemae Menzies 169
144. lanirella magnifrons, n.sp. 169
19. Genus: Spinianirella, n.gen. 170
145. Spinianirella walfishensis, n.sp. 171
20. Genus: Rhacura Richardson 171
146. Rhacura pulchra Richardson 172